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}NASA Earthdata CMR2012 · collection
The fate of primary production in Antarctic sea ice: the role of metazoan grazers.Crustaceans are an important component of the Antarctic marine ecosystem. Large numbers live in or close to the sea-ice cover, using it as a refuge from predation and a source of food. However, the impact of these animals on algae that grows in the sea ice is unknown. This study is examining the diets and grazing rates of crustaceans in the Antarctic sea-ice ecosystem. These results will aid our u
NASA Earthdata CMR2011 · collection
Direct Molecular Analysis of Antarctica and Southern Ocean Microbial CommunitiesMetadata record for data from ASAC Project 867 See the link below for public details on this project. Dataset Sea-ice bacteria data are associated with ASAC_1012 and included there Data for bacteria from ornithogenic soil samples collected from the Vestfold Hills Region is included (associated with ref 9899): 1) Isolate designations, availability, media used and growth conditions. 2) Phenotypic da
NASA Earthdata CMR2010 · collection
The glaciers, an observatory of climate, exploratory step for Kerguelen component - GLACIOCLIM-KESAACO (KErguelen Surface Ablation, Accumulation and Climate Observation)This proposal is the exploratory step for Kerguelen component of the GLACIOCLIM Observatory. GLACIOCLIM is a French observatory to globally detect, monitor and understand climate and mass balance variability in the glacial environment. In the Kerguelen archipelago (49�S, 69�E, with an ice covered area of 552km� in 2001), there have been few short term glaciological studies on Ampere Glacier (main
NASA Earthdata CMR2000 · collection
Nitrogen and Argon Isotope Data from GISP2 Ice CoreFuture Greenland temperature evolution will affect melting of the ice sheet and associated global sea-level change. Therefore, understanding Greenland temperature variability and its relation to global trends is critical. Here, we reconstruct the last 1,000 years of central Greenland surface temperature from isotopes of N2 and Ar in air bubbles in an ice core. This technique provides constraints o
NASA Earthdata CMRcollection
The biomass, productivity and biodiversity of algae in the Cape Hallett regionThe distribution and biodiversity of algae was assessed to enable possible future predictions of the effects of global warming. Sites (5 in the first season, 4 in the second) were established around the Cape Hallett peninsula and samples of algae were collected from the ice at regular intervals. As far as possible these sites represented the range of conditions of sea ice in the region. CTD probes
NASA Earthdata CMRcollection
The biomass, productivity and biodiversity of algae and bacteria in Granite Harbour and the physical parameters of their environmentThe total biomass, productivity and biodiversity of algae and bacteria from the sea ice and the water column was investigated in Granite Harbour. Sampling sites in the Granite Harbour area were used to survey the sea ice for algae and bacteria by drilling cores and using bottom ice, brine and using the entire ice core to look at biomass in profile. Initial chlorophyll concentrations were determine
NASA Earthdata CMRcollection
Research of sea ice biogeochemical data and oceanographic measurements under the Ross ice shelfOceanographic data compiling of - salinity, current, pressure, ice-water interface data was gathered from under the Ross Ice shelf to gain a better understanding of the interactions of sub ice shelf water and the Ross Sea, with the intention of developing a model of the ocean – sea ice – ice shelf interaction. Additional research has been undertaken to recognise the exchanges of energy and matter
NASA Earthdata CMRcollection
Measurements of the effects of UV-B on sea ice algal growth and productivityThe effects of UV-B on the growth and productivity of sea ice algae was investigated with two experiments. The growth of sea ice algae was investigated in situ under four different light treatments including a) control; under normal snow cover (10cm) with UV-B and PAR radiation, b) normal snow cover, natural PAR but no UV-B radiation, c) no snow, natural UV-B and PAR radiation and d) no snow, natu
NASA Earthdata CMRcollection
Measurements of the amount of UV and visible radiation falling onto sea ice and the effects of enhanced UV radiation levels on sea ice algaeSea ice algae are speculated to be considerably vulnerable to the effects of enhanced UV from the ozone hole during the Antarctic spring. The amount of UV and visible radiation falling onto the sea ice (the spectrum, intensity and where it comes from in the sky and the polariation of the radiation) was characterised using two instruments at Tent Island and near Scott Base. Measurements include tot
NASA Earthdata CMRArray ·
Ross Sea Icebergs (B15A, C16, B15J, B15K, C25 and Nascent): Drift, weather and seismic data.During 2001-2006, 6 giant icebergs (B15A, B15J, B15K, C16 and C25) adrift in the southwestern Ross Sea, Antarctica, were instrumented with global positioning system (GPS) receivers, magnetic compasses, automatic weather stations (AWS), firn temperature profile sensors, seismometers, and automated cameras to monitor their behavior in the near-coastal environment and to record their exit into the So
NASA Earthdata CMRcollection
Plant Pigments, Chlorinity and pH Distribution in the Sea Ice near Syowa Station, Antarctica in 1970Sea ice samples were collected by using a Sipre ice auger near the Showa Station, Antarctica in 1970. Chlorophyll and pH of these samples were measured with Hitachi-made FPL-2 typ e fluorometer. The input data capacity of latitude and longitude values are limited only to degrees. The exact values are as follows: Min. Latitude: 69deg. 00min. S Max. Latitude: 69deg. 00min. S Min. Longitude: 39deg. 3
NASA Earthdata CMRcollection
The stratigraphy and magnetostratigraphy of surface and subsurface late Cenozoic Ross Sea drift from drill cores taken in the eastern Taylor ValleyIn the 1980/81 and 1982/83 Antarctic field seasons, drilling and mapping were undertaken as part of a programme in the eastern Taylor Valley to investigate the late Cenozoic glacial history of the Taylor Valley and the surrounding environment. Previously, glacigenic deposits were cored in the eastern Taylor Valley in the 1974/75 season by the Dry Valleys Drilling Project (DVDP) and studies of the
NASA Earthdata CMRcollection
The response of sea ice and brine water algae and bacteria to changes in salinity, temperature, light and UVB in Granite HarbourIn the 2008/2009 season, samples of the bottom ice algae and brine algae (within 30cm of the top of the ice) were subjected to temperature, salinity, light and UVB experiments and analysed with PAM rapid light curves to determine the response of the algae to changes they will encounter. In the 2009/2010 season, samples of the bottom ice bacteria were subjected to changes in the colour of light in
NASA Earthdata CMRcollection
The Permafrost in the Antarctic PeninsulaSince 1990, the joint Argentine (Instituto Antarctico Argentino, IAA), Japanese (Institute of Low Temperature Science, ILTS), and, recently, Italian (Third University of Rome) group "Criologia" has been concerned with research on cryological and geomorphological aspects in the northern Antarctic Peninsula area. Sorted nets, circles and stripes, stone pits, ice-wedge, seasonal frost crack polygons,
NASA Earthdata CMRcollection
Ice Core Microparticle Analyses of the Collins Ice Cap on King George Island in West AntarticaAt the Climate Change Research Center, the University of New Hampshire, USA, continuous measurement of microparticles was conducted on the top 45m of an ice core, which was drilled at the summit of Collins Ice Cap. The ice core was sampled at intervals between 15 to 20cm. In addition, an experimental analysis of the temporal variation of microparticle content in a liquid was conducted.
NASA Earthdata CMRcollection
Mass Balance of the Collins Ice Cap on King George Island in West AntarcticaMass balance observations were carried out during the 1991/1992 Chinese Antarctica Expedition, when 64 stakes and 15 snow pits were established on Little Dome. Nine sets of simultaneous observations were conducted over the course of a full year. Combined with ice core data, the mass balance pattern of the ice cap can be obtained, providing estimates to mass balance variations over the past 20 year
NASA Earthdata CMRcollection
Pigment Content and Salinity of Sea Ice Cores collected near Syowa Station, Antarctica in 1983/1984Chlorophyll, pigment content and salinity of sea ice cores collected at 4 stations near Syowa Station, Antarctica, from 1983 to 1984 were measured. The input data capacity of latitude and longitude values are limited only to degrees. The exact values are as follows: Min. Latitude: 69deg. 00min. S Max. Latitude: 69deg. 00min. S Min. Longitude: 39deg. 35min. E Max. Longitude: 39deg. 35min. E
NASA Earthdata CMRcollection
The Permafrost in the Antarctic Peninsula - CDA_AR_GEO_PREDIF_PERMFROS_DATASince 1990, the joint Argentine (Instituto Antarctico Argentino, IAA), Japanese (Institute of Low Temperature Science, ILTS), and, recently, Italian (Third University of Rome) group "Criologia" has been concerned with research on cryological and geomorphological aspects in the northern Antarctic Peninsula area. Sorted nets, circles and stripes, stone pits, ice-wedge, seasonal frost crack polygons,
NASA Earthdata CMRcollection
Physico-chemical properties of sea ice in relation to biological activity from ice cores taken along a transect in McMurdo SoundThe interactions between biological activity and physico-chemical characteristics of landfast first year sea ice were investigated in McMurdo Sound as a multiparametric analysis of the physico-chemical properties of the ice. The first phase occurred in early spring (when the photosynthetic activity restarts - October 1999), the second at the beginning of summer (November 2001) and the last phase a
NASA Earthdata CMRcollection
Bacteria abundance and chlorophyll-a concentrations from sea ice cores, July-August 2001, Continental Margin Western Antarctic Peninsula, GLOBEC.Observations of bacteria abundance and chlorophyll-a concentrations were extracted from sea ice cores. Ice cores, ~1 meter in length, were obtained during 2 ship cruises to the Antarctic, July-August 2001. The general survey area includes: the continental shelf to the west of the Antarctic Peninsula extending from the northern tip of Adelaide Island to the southern portion of Alexander Island, Mar
NASA Earthdata CMRcollection
Investigations of the algal ecology of Lake Vanda, Wright Valley and Lake Miers, Miers ValleyThe algal ecology of two Antarctic lakes, Lake Vanda, Wright Valley and Lake Miers, Miers Valley, were studied, and extensive collections were made of littoral and terrestrial algae, lichens and mosses. Samples of planktonic microorganisms were collected from both lakes by inserting a rubber tube through a hole drilled in the ice layer and pumping water through nylon filters at the surface. Large
NASA Earthdata CMRcollection
Research of sea ice biogeochemical data and oceanographic measurements under the Ross ice shelf - K131_2011_2012_NZ_1Oceanographic data compiling of - salinity, current, pressure, ice-water interface data was gathered from under the Ross Ice shelf to gain a better understanding of the interactions of sub ice shelf water and the Ross Sea, with the intention of developing a model of the ocean – sea ice – ice shelf interaction. Additional research has been undertaken to recognise the exchanges of energy and matter
NASA Earthdata CMRcollection
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, AntarcticaThis metadata record covers ASAC projects 113, 191 and 625. (ASAC_113, ASAC_191, ASAC_625). The total lipid, fatty acid, sterol and pigment composition of water column particulates collected near the Australian Antarctic Base, Davis Station, were analysed over five summer seasons (1988-93) using capillary GC, GC-MS, TLC-FID and HPLC. Polar lipids were the dominant lipid class. Maximum lipid concen
NASA Earthdata CMRcollection
Measurements of the effects of debris on the mechanical behaviour (deformation and motion) of ice of the Taylor Glacier, Taylor Valley, AntarcticaDebris-rich ice is a commonly observed basal ice facies found at the base of many temperate and polar glaciers and at the base of cores through major ice sheets. The effects of the presence of debris on the mechanical behaviour of ice was investigated and then the implication of those effects for the overall dynamics of ice masses was examined at the Taylor Glacier, Taylor Valley, Antarctica over
NASA Earthdata CMRcollection
Temperature and salinity profiles of the water column during platelet ice formation and analysis of the structure and isotopic content of platelet icePlatelet ice is a particular sea ice type that is prevalent in McMurdo Sound, probably due to the proximity of the Ross Ice Shelf. There are many details about the formation of platelet ice which are unknown and the study focused on investigating the conditions of the water column when this sea ice type appears. The temperature and salinity close (35 to 60cm) to the ice water interface was measure