| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2014-08-19 |
| タイトル |
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|
タイトル |
Ground-based measurements of spatial and temporal variability of snow accumulation in East Antarctica |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Olaf, Eisen
Massimo, Frezzotti
Christophe, Genthon
Elisabeth, Isaksson
Olivier, Magand
Michiel, R. van den Broeke
Daniel, A. Dixon
Alexey, Ekaykin
Per, Holmlund
Takao, Kameda
Lars, Karlof
Susan, Kaspari
Vladimir, Y. Lipenkov
Hans, Oerter
Shuhei, Takahashi
and, David G. Vaughan
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
The East Antarctic Ice Sheet is the largest, highest, coldest, driest, and windiest ice sheet on Earth. Understanding of the surface mass balance (SMB) of Antarctica is necessary to determine the present state of the ice sheet, to make predictions of its potential contribution to sea level rise, and to determine its past history for paleoclimatic reconstructions. However, SMB values are poorly known because of logistic constraints in extreme polar environments, and they represent one of the biggest challenges of Antarctic science. Snow accumulation is the most important parameter for the SMB of ice sheets. SMB varies on a number of scales, from small-scale features (sastrugi) to ice-sheet-scale SMB patterns determined mainly by temperature, elevation, distance from the coast, and wind-driven processes. In situ measurements of SMB are performed at single points by stakes, ultrasonic sounders, snow pits, and firn and ice cores and laterally by continuous measurements using ground-penetrating radar. SMB for large regions can only be achieved practically by using remote sensing and/or numerical climate modeling. However, these techniques rely on ground truthing to improve the resolution and accuracy. The separation of spatial and temporal variations of SMB in transient regimes is necessary for accurate interpretation of ice core records. In this review we provide an overview of the various measurement techniques, related difficulties, and limitations of data interpretation; describe spatial characteristics of East Antarctic SMB and issues related to the spatial and temporal representativity of measurements; and provide recommendations on how to perform in situ measurements. |
|
言語 |
en |
| 書誌情報 |
Reviews of Geophysics
巻 46,
号 2,
p. RG2001-1-RG2001-39,
発行日 2008-04
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| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
http://doi.org/10.1029/2006RG000218 |
| 権利 |
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|
権利情報 |
Copyright 2008 by the American Geophysical Union. |
| 出版者 |
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|
出版者 |
American Geophysical Union |
|
言語 |
en |
| 著者版フラグ |
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|
言語 |
en |
|
値 |
publisher |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
No56.pdf (2.7 MB)
