| Abstract: | Ice-front change may well be a sensitive indicator of regional climate change. We have studied the western Oates Coast from Cape Kinsey (158??50‘E, 69??19‘S) to Cape Hudson (153??45‘E, 68??20‘S) and the entire George V Coast, from Cape Hudson to Point Alden (142??02‘E, 66??48‘S). The glaciers here drain part of the Dome Charlie and Talos Dome areas (640 000 km2). A comparison between various documents, dated several years apart, has allowed an estimate of the surficial ice discharge, the ice-front fluctuation and the iceberg-calving flux during the last 50 years. The ice-front discharge of the studied coast has been estimated at about 90??12 km3 a-1 in 1989-91, 8.5 km3 a-1 for western Oates Coast and 82 km3 a-1 for George V Coast. From 1962-63 to 1973-74 the floating glaciers underwent a net reduction that continued from 1973-74 to 1989-91. On the other hand, from 1989-91 to 1996 the area of floating glaciers increased. Ninnis Glacier Tongue and the western part of Cook Ice Shelf underwent a significant retreat after 1980 and 1947, respectively. Satellite-image analysis of large icebergs has provided information about ice-ocean interaction and the existence of an ‘iceberg trap‘ along George V Coast. A first estimate of the mass balance of the drainage basin of Mertz and Ninnis Glaciers shows a value close to zero or slightly negative. |
| Genre: | Article |
| ProdID: | 70019727 |
| Citation Author: | Frezzotti, M.; Cimbelli, A.; Ferrigno, J. G. |
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| Citation End Page: | 650 |
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| Citation Language: | English |
| Citation Larger Work Title: | Annals of Glaciology |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | Ice-front change and iceberg behaviour along Oates and George V Coasts, Antarctica, 1912-96; 1998; Article; Journal; Annals of Glaciology; Frezzotti, M.; Cimbelli, A.; Ferrigno, J. G. |
| Citation Start Page: | 643 |
| Citation Volume: | 27 |
| Citation Year: | 1998 |
| Type: | citation/reference |
| Text: | Ice-front change and iceberg behaviour along Oates and George V Coasts, Antarctica, 1912-96; 1998; Article; Journal; Annals of Glaciology; Frezzotti, M.; Cimbelli, A.; Ferrigno, J. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1998 00:00 -0600 |
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