DOI: 10.1002/2013GL058083
论文题名: Initial in situ measurements of perennial meltwater storage in the Greenland firn aquifer
作者: Koenig L.S. ; Miège C. ; Forster R.R. ; Brucker L.
刊名: Geophysical Research Letters
ISSN: 0094-10517
EISSN: 1944-10248
出版年: 2014
卷: 41, 期: 1 起始页码: 81
结束页码: 85
语种: 英语
英文关键词: Greenland perennial firn aquifer
; mass balance
; meltwater
Scopus关键词: Density profile
; Greenland
; Greenland Ice Sheet
; Heat reservoirs
; In-situ measurement
; Mass balance
; meltwater
; Southeast Greenland
; Radar measurement
; Reservoirs (water)
; Sea level
; Aquifers
; aquifer
; firn
; glacial hydrology
; meltwater
; numerical model
; water depth
; Arctic
; Greenland
英文摘要: A perennial storage of water in a firn aquifer was discovered in southeast Greenland in 2011. We present the first in situ measurements of the aquifer, including densities and temperatures. Water was present at depths between ~12 and 37 m and amounted to 18.7 ± 0.9 kg in the extracted core. The water filled the firn to capacity at ~35 m. Measurements show the aquifer temperature remained at the melting point, representing a large heat reservoir within the firn. Using model results of liquid water extent and aquifer surface depth from radar measurements, we extend our in situ measurements to the Greenland ice sheet. The estimated water volume is 140 ± 20 Gt, representing ~0.4 mm of sea level rise (SLR). It is unknown if the aquifer temporary buffers SLR or contributes to SLR through drainage and/or ice dynamics. Key Points First Greenland aquifer estimate of stored water, ~0.4 mm of SLR First aquifer temperature and density profiles are shown Evidence for aquifer filling after Greenland extreme melt in 2012 ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896692626&doi=10.1002%2f2013GL058083&partnerID=40&md5=70f528001a7557209a6a0348449cdf97
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7781
Appears in Collections: 气候减缓与适应
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作者单位: Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Recommended Citation:
Koenig L.S.,Miège C.,Forster R.R.,et al. Initial in situ measurements of perennial meltwater storage in the Greenland firn aquifer[J]. Geophysical Research Letters,2014-01-01,41(1).