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Liu, Lin; Larson, Kristine M (2018): Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals. PANGAEA,, 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,

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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.
Related to:
Hu, Yufeng; Liu, Lin; Larson, Kristine M (2018): The decadal reflector heights for SG27 in Barrow, Alaska (2007-2016). PANGAEA,
Latitude: 71.323000 * Longitude: -156.610000
Date/Time Start: 2004-07-01T00:00:00 * Date/Time End: 2015-09-01T00:00:00
Minimum Elevation: 9.4 m * Maximum Elevation: 9.4 m
Barrow_SG27 (SG27) * Latitude: 71.323000 * Longitude: -156.610000 * Date/Time Start: 2007-01-01T00:00:00 * Date/Time End: 2016-12-31T00:00:00 * Elevation: 9.4 m * Location: Barrow, Alaska, USA
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeLiu, LinGeocode
2Day of the yearDOYdayLiu, Lin
3Elevation changeElev changecmLiu, Lin
4Elevation change, errorElev change ecmLiu, Lin
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