The Antarctic Ice Sheet during the Last Glacial Maximum and its subsequent retreat history: a review

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• 作者：Anderson ; John B. ; Shipp ; Stephanie S. ; Lowe ; Ashley L. ; Wellner ; Julia Smith ; Mosola ; Amanda B.
• 刊名：Quaternary Science Reviews
• 出版年：2002
• 出版时间：January, 2002
• 年：2002
• 卷：21
• 期：1-3
• 页码：49-70
• 全文大小：1.79 M

文摘

An emerging body of evidence from studies of the last glacial/interglacial cycle suggests that the East and West Antarctic ice sheets have not advanced and retreated in concert. The West Antarctic ice sheet advanced to the outer shelf in most regions during the Last Glacial Maximum (LGM). The retreat from the shelf commenced shortly after the LGM and continued into the late Holocene. The West Antarctic Ice Sheet in Ross and Amundsen seas slid across a deforming bed, at least during the final phases of extended glaciation. This implies that at this time the ice sheet had a low profile. Differences in the number and locations of grounding-zone wedges and smaller grounding zone features from trough to trough imply that individual West Antarctic Ice Sheet ice streams retreated episodically.