Dynamic variations in thermal regime and surface deformation along the drainage channel for an expanding lake on the Tibetan Plateau ...
The outburst of Zonag Lake in 2011 triggered a series of floods in the continuous permafrost region of the hinterland of the Qinghai-Tibet Plateau. This re-distributed the surface water in the basin and caused rapid expansion of the tail lake (Salt Lake). To avoid potential overflow of the expanding...
| Main Authors: | , , , , , , , , |
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| Format: | Text |
| Language: | unknown |
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Taylor & Francis
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.6084/m9.figshare.24278413.v1 https://tandf.figshare.com/articles/journal_contribution/Dynamic_variations_in_thermal_regime_and_surface_deformation_along_the_drainage_channel_for_an_expanding_lake_on_the_Tibetan_Plateau/24278413/1 |
| Summary: | The outburst of Zonag Lake in 2011 triggered a series of floods in the continuous permafrost region of the hinterland of the Qinghai-Tibet Plateau. This re-distributed the surface water in the basin and caused rapid expansion of the tail lake (Salt Lake). To avoid potential overflow of the expanding Salt Lake, a channel was excavated to drain the lake water into a downstream river. In this study, to investigate the permafrost thermal regime and the surface deformation around the expanding Salt Lake and the channel, in-situ monitoring sections were settled from Salt Lake to the downstream of the channel to obtain the permafrost temperature. Additionally, using small baseline subset interferometric synthetic aperture radar (SBAS-InSAR), the surface deformation around Salt Lake and the channel was measured. The data showed that the ground temperature at the channel was 0.6°C higher than the natural field and the mean subsidence rate around the channel was 1.5 mm/yr higher than that at Salt Lake. These results ... |
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