Etude de l'accumulation de la neige pendant le raid ASUMA

Testing of a spectro-albedometer against a background of pack ice, at the Cape Prudhomme base in Antarctica, prior to the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. This instrument is devoted to measurement of the albedo, ratio of reflected solar energy to incident energy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d'Urville base in Antarctica, on 1…

Sorting of cases and scientific equipment at the Cape Prudhomme base in Antarctica, in front of the convoy’s energy caravan, prior to the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Testing a spectro-albedometer at the Cape Prudhomme base in Antarctica, with the Dumont d’Urville base in the background, prior to the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. This instrument is devoted to measurement of the albedo, ratio of reflected solar energy to incident energy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in…

Cape Prudhomme base in Antarctica, starting point of expeditions towards the continent’s interior. In the background, the Dumont d'Urville base. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. It is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d'Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal…

Testing the GPS (Global Positioning System) mounted on a pulka (sled) at the Cape Prudhomme base in Antarctica, prior to the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular…

Assembly of a raft (platform) at the Cape Prudhomme base in Antarctica, during preparation of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition’s scientific caravans. These caravans are funded under the auspices of Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the…

Alignment of insulated cases at the Cape Prudhomme base in Antarctica. They are intended to receive ice cores drilled during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Three types of analysis will be conducted on these cores: chemical and isotopic, in particular to trace the penetration of oceanic air masses into the continent’s interior, and radioactive to assist in their dating. ASUMA is an ANR/IPEV programme under whose auspices a scientific…

Moving the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition's scientific drilling caravan to secure it onto the sled at the Cape Prudhomme base on the continent of Antarctica. This caravan is funded under the auspices of Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from…

Hot laboratory scientific caravan ready to be hitched up for the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition at the Cape Prudhomme base on the continent of Antarctica. It is funded under the auspices of Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres…

Hot laboratory scientific caravan ready to be hitched up for the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition at the Cape Prudhomme base on the continent of Antarctica. It is funded under the auspices of Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres…

Convoy assembled above the Cape Prudhomme base on the continent of Antarctica, immediately prior to the departure of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand…

Three tractors at the head of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy on departure from Cape Prudhomme on 1 December 2016 ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, five kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the…

Convoy on departure from the coast of Antarctica, on the first day of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Pack ice in the background. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Convoy on the continent of Antarctica, on the first day of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the…

A unit of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy, comprising a tractor, a fuel tank, a refrigerated container to store ice core samples, and a scientific equipment sled. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Initial measurements of albedo, the ratio of reflected solar energy to incident energy, performed during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Measurements of albedo, the ratio of reflected solar energy to incident energy, above the snow surface, performed on the continent of Antarctica during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent…

Drilling system devoted to measurement of snow specific surface area profiles, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. The specific surface area of snow is the actual surface of the snow grains, per unit mass. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the…

Blown snow on the surface of the Antarctic ice cap in the evening light, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow…

Stationary convoy of tractors and caravans during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow…

Measurement of snow specific surface area profiles in a borehole, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. The specific surface area of snow is the actual surface of the snow grains, per unit mass. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the…

Measurement of snow specific surface area profiles in a borehole, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. The specific surface area of snow is the actual surface of the snow grains, per unit mass. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the…

Blown snow around the scientific drilling caravan and the snowcat used to open the route for the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Boring a shallow hole (20 m) using a small electromechanical core drill, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Cutting an ice core sample in the scientific drilling caravan, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Cutting an ice core sample in the scientific drilling caravan, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Measurement of specific surface area of snow on a section of core sample in the scientific drilling caravan, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Electrical panel for connection of vehicles and caravans trapped in the ice following a blizzard event, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. It is located outside the energy caravan. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent…

System for measurement of specific surface area of snow on a section of core sample in the scientific drilling caravan, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. The specific surface area of snow is the actual surface of the snow grains, per unit mass. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica,…

Sastrugi field on the surface of the Antarctic ice cap, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Sastrugi field on the surface of the Antarctic ice cap, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Scientific drilling caravan behind a large sastrugi, on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. A sastrugi is a sculpture of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of…

Filling the vehicle tanks at the end of each day’s journey, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Core drill about to commence drilling a borehole through the scientific drilling caravan’s hatch, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Boring a shallow hole (20 m) using a small electromechanical core drill, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Boring a shallow hole (20 m) using a small electromechanical core drill, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Tractor equipped with a radar antenna (in yellow), enabling measurement of variability in snow accumulation throughout the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition’s journey on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this…

Installation of a marker on the Antarctic ice cap in order to measure snow accumulation, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution…

Parhelion, diffraction of light in ice crystals above ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy fuel tanks on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Progress of the convoy on the sastrugi-studded continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Progress of the convoy on the sastrugi-studded continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Progress of the convoy on the sastrugi-studded continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to…

Assembly of sensors on a meteorological mast prior to its installation on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Installation of a mast equipped with meteorological and nivological sensors on the continent of Antarctica using a tractor’s crane, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular…

Installation of sensors on a meteorological mast installed on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Installation of a mast equipped with meteorological and nivological sensors on the continent of Antarctica using a tractor’s crane, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular…

Installation of a mast equipped with meteorological and nivological sensors on the continent of Antarctica using a tractor’s crane, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular…

Installation of a mast equipped with meteorological and nivological sensors on the continent of Antarctica using a tractor’s crane, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular…

Automatic station equipped with meteorological and nivological sensors installed on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Parhelion, diffraction of light in ice crystals above the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the…

Marker installed during a blizzard in order to measure snow accumulation on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Snow albedo measurement on a day with light blizzard, in front of a recently installed automatic weather station, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Albedo is the ratio of reflected solar energy to incident energy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading…

Snow albedo measurement on a day with light blizzard, in front of a recently installed automatic weather station, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Albedo is the ratio of reflected solar energy to incident energy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading…

Snow albedo measurement on a day with light blizzard, in front of a recently installed automatic weather station, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Albedo is the ratio of reflected solar energy to incident energy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading…

Technical discussion in a blizzard, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow…

Installation of sensors on a meteorological mast installed on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Convoy in a blizzard on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. The scientific drilling caravan is equipped with a mast on which a laser device enables mapping of the roughness of the snow surface when stationary. This roughness represents the snow surface state, smooth or degree of relief. It influences the way in which the light is reflected. ASUMA is an ANR/IPEV programme under whose auspices a scientific…

Convoy in a blizzard on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. The scientific drilling caravan is equipped with a mast on which a laser device enables mapping of the roughness of the snow surface when stationary. This roughness represents the snow surface state, smooth or degree of relief. It influences the way in which the light is reflected. ASUMA is an ANR/IPEV programme under whose auspices a scientific…

Drilling operation through the hatch cut in the scientific caravan designed for this purpose and funded by Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres…

Scientific drilling caravan during a halt on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. This caravan is funded by Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV); it is equipped with a mast on which a laser device enables mapping of surface roughness. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point…

Tractor towing a caravan on the continent of Antarctica during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. This caravan is funded under the auspices of Equipex Climcor (palaeoclimatic core-drilling: high resolution and innovations) with the support of the Polar Institute (IPEV). ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1…

Multi-instrument physical characterisation of surface snow on the continent of Antarctica: measurement of roughness, density, specific surface area, albedo and hardness. Albedo is the ratio of reflected energy to incident energy. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base…

Multi-instrument physical characterisation of surface snow on the continent of Antarctica: measurement of roughness, density, specific surface area, albedo and hardness. Albedo is the ratio of reflected energy to incident energy. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base…

Multi-instrument physical characterisation of surface snow on the continent of Antarctica: measurement of roughness, density, specific surface area, albedo and hardness. Albedo is the ratio of reflected energy to incident energy. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base…

Blown snow on the surface of the continent of Antarctica at the location where a marker intended to measure accumulation has just been installed. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The…

Sastrugi field in front of the convoy stopped for the night on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is…

Sastrugi field in front of the convoy stopped for the night on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is…

Sastrugi field on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Sastrugi field on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Sastrugi field in front of the convoy stopped for the night on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is…

Assembly of sensors on a meteorological mast prior to its installation on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

Installation of a mast equipped with meteorological and nivological sensors, using a tractor’s crane, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Installation of a mast equipped with meteorological and nivological sensors, using a tractor’s crane, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Sastrugi field on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Characterisation of snow surface roughness using a camera, on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. This roughness represents the snow surface state, smooth or degree of relief. It influences the way in which the light is reflected. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December…

Automatic station equipped with meteorological and nivological sensors installed on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Giant sastrugi on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Detail of a sastrugi sculpted by the wind on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Detail of a sastrugi sculpted by the wind on the surface of the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. Sastrugi are ridges of hard snow formed by the wind. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in…

Automatic station equipped with meteorological and nivological sensors installed on the continent of Antarctica, during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy in the middle of the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the surface of…

Preparation of the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy on a day of blizzard on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow…

Morning of blizzard during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition on the continent of Antarctica. Each person goes to his tractor to assemble the convoy. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the…

The ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy starting off in a blizzard on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the…

ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy in the middle of the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the surface of…

ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy in the middle of the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the surface of…

Convoi du raid ASUMA (Improving the accuracy of the surface mass balance of Antarctica) au milieu du continent Antarctique. ASUMA est un programme ANR/IPEV dans le cadre duquel un raid scientifique est parti le 1er décembre 2016 depuis le point D10, à quelques kilomètres de la base française de Dumont d’Urville en Antarctique, en direction du centre du continent. Le but de ce programme est notamment de mieux connaître l’évolution actuelle de la neige accumulée en surface de l’Antarctique d’une…

Maintenance work on an automatic weather station on the continent of Antarctica (station D47), during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

Maintenance work on an automatic weather station on the continent of Antarctica (station D47), during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current…

ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy in the middle of the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better understand the current evolution of the snow accumulated on the surface of…

ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition convoy a few kilometres from the coast and the Dumont d’Urville base after 34 days of operation on the continent of Antarctica. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading towards the centre of the continent. The goal of this programme is in particular to better…

Cape Prudhomme logistics base on the continent of Antarctica, a few kilometres from the Dumont d'Urville base. This is the starting point of expeditions towards the continent’s interior. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading…

Cape Prudhomme logistics base on the continent of Antarctica, a few kilometres from the Dumont d'Urville base. This is the starting point of expeditions towards the continent’s interior. This photograph was taken during the ASUMA (Improving the Accuracy of the SUrface Mass balance of Antarctica) expedition. ASUMA is an ANR/IPEV programme under whose auspices a scientific expedition left point D10, a few kilometres from the French Dumont d’Urville base in Antarctica, on 1 December 2016, heading…