Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2018
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| _version_ | 1867171005165731840 |
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| author | Liu, Lin Larson, Kristine M |
| author_facet | Liu, Lin Larson, Kristine M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_885935 |
| institution | PANGAEA |
| language | en |
| publishDate | 2018 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals Liu, Lin Larson, Kristine M Barrow_SG27; Barrow, Alaska, USA; DATE/TIME; Day of the year; Elevation change; Elevation change, error; SG27 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. |
| title | Surface elevation changes near Barrow (Alaska) measured using reflected GPS signals |
| topic | Barrow_SG27; Barrow, Alaska, USA; DATE/TIME; Day of the year; Elevation change; Elevation change, error; SG27 |
| url | https://doi.org/10.1594/PANGAEA.885935 |