Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals
Computer software or system


摘要We use reflected GPS signals to measure temporal changes of ground surface elevation due to dynamics of the active layer and near-surface permafrost. Applying the GPS interferometric reflectometry technique to the multipath signal-to-noise ratio data collected by a continuously-operating GPS receiver mounted deep in permafrost in Barrow, Alaska, we can retrieve the vertical distance between the antenna and reflecting surface. Using this unique kind of observables, we obtain daily changes of surface elevation during July and August from 2004 to 2015. Our results show distinct temporal variations at three timescales: regular thaw settlement within each summer, strong inter-annual variability that is characterized by a sub-decadal subsidence trend followed by a brief uplift trend, and a secular subsidence trend of 0.26 cm/year during 2004 and 2015.
著者Liu Lin, Larson Kristine M
出版作品名稱Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals
詳細描述Supplement to: Liu, L; Larson, KM (2018): Decadal changes of surface elevation over permafrost area estimated using reflected GPS signals. The Cryosphere, 12(2), 477-489,
出版社PANGAEA (Data Publisher for Earth & Environmental Science)

上次更新時間 2020-24-05 於 00:39