globalchange  > 过去全球变化的重建
DOI: 10.1017/jog.2019.19
WOS记录号: WOS:000470734900005
论文题名:
Surface elevation changes on Lachman Crags ice caps (north-eastern Antarctic Peninsula) since 1979 indicated by DEMs and ICESat data
作者: Engel, Zbynek1; Kropacek, Jan2; Smolikova, Jana1
通讯作者: Engel, Zbynek
刊名: JOURNAL OF GLACIOLOGY
ISSN: 0022-1430
EISSN: 1727-5652
出版年: 2019
卷: 65, 期:251, 页码:410-421
语种: 英语
英文关键词: Antarctic glaciology ; climate change ; ice cap ; ice thickness measurements ; laser altimetry
WOS关键词: KING GEORGE ISLAND ; JAMES-ROSS-ISLAND ; LIVINGSTON ISLAND ; MASS-BALANCE ; GLACIER CHANGES ; IMPACT ; THICKNESS ; DECLINE ; SHELVES ; AREAL
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

The long-term warming on the Antarctic Peninsula in the second half of the 20th century prompted rapid retreat of glaciers on the peninsula and surrounding islands. Retreat accelerated until the beginning of the new millennium when the regional warming trend significantly decreased. The response of glaciers to the change in temperature trend has been observed around the northern part of the Antarctic Peninsula but the timing of the shift from the surface lowering to mass gain remains unclear. Using historical aerial photographs, DEMs and satellite altimeter data from ICESat, we estimate areal and surface elevation changes of two small ice caps in the northern part of James Ross Island over the last 39 years. The glacierized area on Lachman Crags decreased from 4.337 +/- 0.037 to 3.581 +/- 0.014 km(2) (-17.4%) between 1979 and 2006 and then increased to 3.597 +/- 0.047 km(2) (0.4%) until 2016. Surface lowering observed on ice caps after 1979 continued at least until 2008 as indicated by the ICESat data. The change from the lowering trend to increase in glacier surface elevation probably occurred after the ablation season 2008/09, which ranks among the warmest summers in the north-eastern Antarctic Peninsula since the mid-20th century.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/139038
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作者单位: 1.Charles Univ Prague, Fac Sci, Dept Phys Geog & Geoecol, Prague, Czech Republic
2.Czech Univ Life Sci, Fac Environm Sci, Dept Appl Geoinformat & Spatial Planning, Prague, Czech Republic

Recommended Citation:
Engel, Zbynek,Kropacek, Jan,Smolikova, Jana. Surface elevation changes on Lachman Crags ice caps (north-eastern Antarctic Peninsula) since 1979 indicated by DEMs and ICESat data[J]. JOURNAL OF GLACIOLOGY,2019-01-01,65(251):410-421
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