Melting history of the Patagonian Ice Sheet during Termination I inferred from marine sediments

作者：Shiroya Kazuyo; Yokoyama Yusuke^*; Obrochta Stephen; Harada Naomi; Miyairi Yosuke; Matsuzaki Hiroyuki

来源：Geochemical Journal, 2013, 47(2): 107-117.

• Patagonian Ice Sheet
• Termination I
• melting history
• Al2O3 flux
• marine sediments

To investigate the melting history of the Patagonian Ice Sheet (PIS) during the last deglaciation, we reconstructed Al2O3 flux in sediments from the Magellanes fjord (53 degrees S) and southern Patagonia (55 degrees S: Drake Passage) over the past 12 and 31 kiloyears (kyr), respectively. We confirm that the melting history of the PIS is recorded as changes in sedimentological signals and find that the melting ceased between similar to 10 and 8 Calendar kyr before present (cal kyr BP). The timing of major melting events of the PIS was similar to that of the Northern Hemisphere ice sheets.

• 出版日期2013