气候变化领域集成服务门户(CCPortal): Contributions of Greenland GPS Observed Deformation From Multisource Mass Loading Induced Seasonal and Transient Signals

CCPortal

DOI	10.1029/2020GL088627
	Contributions of Greenland GPS Observed Deformation From Multisource Mass Loading Induced Seasonal and Transient Signals
	Li W.; Shum C.K.; Li F.; Zhang S.; Ming F.; Chen W.; Zhang B.; Lei J.; Zhang Q.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Global Positioning System (GPS) provides critical geodetic constraints on Earth's elastic response induced by ice and other mass loadings in Greenland. Previous studies focused on long-term ice mass changes, with relatively fewer studies on transient signals and had used fewer GPS stations. Here we reconstructed 44 Greenland-wide coastal decadal GPS time series using multichannel singular spectral analysis and quantified the origins of spatiotemporal patterns of transient to seasonal signals. We used an exhaustive list of geophysical processes, including surface mass balance (SMB), atmospheric pressure, continental hydrology, nontidal ocean loading, bedrock thermal expansion, precipitation, runoff, and ice discharge, and identified that most of Greenland's GPS sites exhibit SMB-induced transient signals during 2012–2015, with maximum displacement reaching 20.45 mm. Analyses of differenced time series between adjacent GPS stations near peripheral glaciers reveal that locally varying seasonal signals are primarily attributable to SMB, followed by atmosphere. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Geodetic satellites; Ice; Spectrum analysis; Thermal expansion; Time series; Time series analysis; Continental hydrologies; Geodetic constraints; Geophysical process; Ice-mass changes; Maximum displacement; Non-tidal ocean loadings; Spatiotemporal patterns; Surface mass balance; Global positioning system; bedrock; deformation; geodetic datum; geophysical method; GPS; induced response; mass balance; seasonal variation; spectral analysis; time series analysis; Arctic; Greenland
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170046
作者单位	Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan, China; Division of Geodetic Science, School of Earth Sciences, Ohio State University, Columbus, OH, United States; Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China; State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan, China; State Key Laboratory of Geo-information Engineering, Xi'an Institute of Surveying and Mapping, Xi'an, China; School of Geodesy and Geomatics, Wuhan university, Wuhan, China; Department of Land Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hong Kong
推荐引用方式 GB/T 7714	Li W.,Shum C.K.,Li F.,et al. Contributions of Greenland GPS Observed Deformation From Multisource Mass Loading Induced Seasonal and Transient Signals[J],2020,47(15).
APA	Li W..,Shum C.K..,Li F..,Zhang S..,Ming F..,...&Zhang Q..(2020).Contributions of Greenland GPS Observed Deformation From Multisource Mass Loading Induced Seasonal and Transient Signals.Geophysical Research Letters,47(15).
MLA	Li W.,et al."Contributions of Greenland GPS Observed Deformation From Multisource Mass Loading Induced Seasonal and Transient Signals".Geophysical Research Letters 47.15(2020).