北部北太平洋地域における山岳アイスコア研究
的場, 澄人
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http://hdl.handle.net/2115/91751
JaLCDOI : 10.14943/lowtemsci.82.161
KEYWORDS : 山岳氷河; 古環境復元; 北部北太平洋; アイスコア掘削; Ice core; Alpine glacier; Reconstruction of paleo-environment; northern North Pacific; Ice-core drilling
Abstract
Alpine glaciers have significantly higher annual accumulation rates than the Antarctic and Greenland Ice Sheets, allowing for environmental reconstruction with high temporal resolution. The Institute of Low Temperature Science has collected a total of five alpine glacier ice cores from two mountain glaciers in the Kamchatka Peninsula and two in Alaska to reconstruct the environmental changes in the northern North Pacific region. As a result of these researches, hundreds of years of annual accumulation rates in Kamchatka and Alaska have been reconstructed, as well as the deposition of air-borne iron to the northern North Pacific region. This series of researches showed that precisely dated ice cores can recover precipitation and aerosol deposition data that can be compared to meteorological reanalysis data and climate models.
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