Articles | Volume 12, issue 2
https://doi.org/10.5194/tc-12-477-2018
https://doi.org/10.5194/tc-12-477-2018
Research article
 | 
07 Feb 2018
Research article |  | 07 Feb 2018

Decadal changes of surface elevation over permafrost area estimated using reflected GPS signals

Lin Liu and Kristine M. Larson

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Latest update: 17 Jun 2024
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Short summary
We demonstrate the use of reflected GPS signals to measure elevation changes over a permafrost area in northern Alaska. For the first time, we construct a daily-sampled time series of elevation changes over 12 summers. Our results show regular thaw subsidence within each summer and a secular subsidence trend of 0.3 cm per year. This method promises a new way to utilize GPS data in cold regions for studying frozen ground consistently and sustainably over a long time.