Evolution of snow cover and dynamics of atmospheric deposits in the snow in the Antarctica. Data report

• Main Authors: Järvinen, Onni, Leppäranta, Matti, Vehviläinen, Juho
• Format: Other/Unknown Material
• Language: English
• Published: University of Helsinki, Division of Geophysics and Astronomy 2013
• Subjects: Antarc*; Antarctica; Dronning Maud Land; Ice Sheet; Ice Shelf
• Online Access: http://hdl.handle.net/10138/38324

Field programme on the surface layer of the ice sheet in the Dronning Maud Land, Antarctica has been performed in 2009-2011. The objectives were to examine the annual accumulation and sublimation history, snow melting, chemistry of snow impurities, and life history of supraglacial and epiglacial lakes in blue ice regions. Fieldwork was done during FINNARP 2009 and 2010 expeditions. The sites were at the Finnish research station Aboa (73 02.5'S, 013 24.4'W), a snow line from Rampen at the edge of the ice shelf pass Aboa to the station Svea, and blue ice at Basen and neighboring nunataks. Snow measurements were made using classical snow pit method, ice and snow sampling, and with automatic observation stations (surface radiation balance, penetration of sunlight into snow and ice, and temperature within the surface layer of snow and ice). Life history, physics, and ecological state of lakes were mapped. This document is the data report including a brief project introduction, descriptions of the experiments, and the data obtained.