DOI: 10.1002/2013GL057928
论文题名: Isochronous information in a Greenland ice sheet radio echo sounding data set
作者: Sime L.C. ; Karlsson N.B. ; Paden J.D. ; Prasad Gogineni S.
刊名: Geophysical Research Letters
ISSN: 0094-10318
EISSN: 1944-10049
出版年: 2014
卷: 41, 期: 5 起始页码: 1593
结束页码: 1599
语种: 英语
英文关键词: glaciology
; Greenland
; isochrone
; radar
; radioglaciology
Scopus关键词: Algorithms
; Glacial geology
; Glaciers
; Ice
; Radar
; Reflection
; glaciology
; Greenland
; Greenland Ice Sheet
; Ice sheet dynamics
; Isochrones
; Radio-echo sounding
; Radio-glaciology
; Snow accumulation
; Radio systems
; algorithm
; data acquisition
; data set
; echo sounding
; glaciology
; ice movement
; ice sheet
; remote sensing
; simulation
; snow accumulation
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: The evaluation of ice sheet models is one of the pressing problems in the study of ice sheet dynamics. Here we examine the question of how much isochronous information is contained within the publicly available Center for Remote Sensing of Ice Sheets (CReSIS) Greenland airborne radio echo soundings data set. We identify regions containing isochronous reflectors using automatic radio echo sounding processing (ARESP) algorithms. We find that isochronous reflectors are present within 36% of the CReSIS radio echo sounding englacial data by location and 41% by total number of data. Between 1000 and 3000 m in depth, isochronous reflectors are present along more than 50% of the data set flight path. Lower volumes of cold glacial period ice also correspond with more isochronous reflectors. We find good agreement between ARESP and continuity index results, providing confidence in these findings. Ice structure data sets, based on data identified here, will be of use in evaluating ice sheet simulations and the assessment of past rates of snow accumulation. Key Points New algorithms are used to identify regions containing isochronous reflectors The data set contains 36% isochronous reflector across ~200,000 km of flight line Isochronous data are more common inland and where less cold glacial ice occurs ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895114471&doi=10.1002%2f2013GL057928&partnerID=40&md5=d1b68b70802e3cae17923df14ae98a9f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7582
Appears in Collections: 气候减缓与适应
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作者单位: British Antarctic Survey, Cambridge, United Kingdom
Recommended Citation:
Sime L.C.,Karlsson N.B.,Paden J.D.,et al. Isochronous information in a Greenland ice sheet radio echo sounding data set[J]. Geophysical Research Letters,2014-01-01,41(5).