9:00 AM - 9:15 AM
[ACC21-01] Studies on variations of climate and ice sheet under the international deep ice core project at the North East Greenland Ice Stream
Keywords:EGRIP, Greenland, Ice core
Understanding the mechanisms of basal sliding and ice deformation is a prerequisite for better projections of the future changes of the Greenland Ice Sheet and sea level rise. To understand the Greenland Ice Sheet dynamics, the East Greenland Ice Core Project (EGRIP) was proposed by the University of Copenhagen. Japan, Germany, Norway, U.S.A., France and Switzerland have been invited to participate in this international project. Under EGRIP, a deep ice core to the bed will be drilled at the onset of the North-East Greenland Ice Stream (NEGIS), where horizontal flow velocity is expected to be several tens of meters per year. As NEGIS is the largest ice stream in Greenland, the EGRIP ice core will certainly advance our knowledge on the dynamics and past changes of the Greenland Ice Sheet. The EGRIP core will also give us an ideal opportunity to reconstruct the climate and environment changes during the early Holocene, which was considered to be warmer than today and should be an excellent analogue to the future Greenland affected by global warming. The results from the EGRIP core will fill the gap of our knowledge due to the lack of high-resolution, detailed ice core records from the early Holocene.
Japan will participate in the EGRIP under the ArCS (Arctic Challenge for Sustainability) project, a recently funded national project. The first EGRIP steering committee meeting was held in Copenhagen in late October 2015. At the meeting, drilling and fieldwork plans were presented by the University of Copenhagen. Scientific plans were proposed by all the participant nations. At the JpGU meeting, we will present the scientific purposes and plans, together with the current status of the EGRIP and logistic plans.