1567019b-ef46-4f30-8d7e-b63de2313e40 English UTF-8 Dataset Mr. Sakthivel Samy V National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Point of contact 2020-12-09 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Observation on the Snow Accumulation/Ablation over Shelf and Continental Ice in Parts of Central Dronning Maud Land, East Antarctica. 2020-09-09 Creation Document digital Snow accumulation and ablation patterns over shelf and continental ice in parts of Central Dronning Maud Land, East Antarctica were studied during summer of 1989-90, austral winter of 1990 and summer of 1990-91. While there was negligible addition on the shelf ice near Dakshin Gangotri, between December 1989 and March 1990, the period between March 1990 and end of October 90, recorded a steep rise in accumulation of the order of 15.9 gm/cm2 . The summer that followed (1st November 90 to March 91) experienced ablation to the tune of 10.3 gm/cm2 . An year long profile of the snow surface between Maitri and Dakshin Gangotri has revealed a marked accumulation beyond the grounding line as compared to the area close to the Schirmacher oasis. The stake data collected over the continental ice between Maitri and Northern Humboldt has shown heavy accumulation (average 32.5 gm/cm ) during austral winter of 1990 and an ablation of 7.4 gm/cm in just one month of summer that followed it. Antarctic icesheet is in approximate state of equilibrium with respect to its height and lateral extent. Hollin (1962) has shown that the altitude of this icesheet is controlled mainly by the flow of ice rather than by accumulation and air temperature. However, in the coastal regions snow accumulation does take place due to deposition of drift snow and its transformation to ice because of melting, drop in temperature and weight of the overriding snow of subsequent periods. Cameron (1964) established that an approximate calculation of the mass balance of Antarctic icesheet can be done by monitoring systematically laid stakes over shelf and continental ice. Completed Dr. R Ravindra National Centre for Polar and Ocean Research (NCPOR) 8322525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND ictd@ncpor.res.in Principal investigator Earth Science-Cryosphere Theme Antarctic Queen Maud Land Place Observation on the Snow Accumulation/Ablation over Shelf and Continental Ice in Parts of Central Dronning Maud Land Project English 20.0 140.0 -90.0 30.0 1989-01-01 1990-12-31 TableDigital Biosphere unknown Mr. Sakthivel Samy V National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Distributor http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-1799334097&userType=user&freeTextValue=Diversity+of+Algal+Flora+in+Six+Fresh+Water+Streams+of+Schirmacher+Oasis%2C+Antarctica.