GPS Interferometric Reflectometry Reveals Cyclic Elevation Changes in Thaw and Freezing Seasons in a Permafrost Area (Barrow, Alaska)

Hu, Yufeng; Liu, Lin; Larson, Kristine M.; Schaefer, Kevin M.; Zhang, Jiahua; Yao, Yibin

doi:10.1029/2018gl077960

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GPS Interferometric Reflectometry Reveals Cyclic Elevation Changes in Thaw and Freezing Seasons in a Permafrost Area (Barrow, Alaska)

2018
By Hu, Yufeng ; Liu, Lin ; Larson, Kristine M. ; ...
Source: Geophysical Research Letters, 45(11), 5581-5589

[PDF-1.09 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Hu, Yufeng ; Liu, Lin ; Larson, Kristine M. ; Schaefer, Kevin M. ; Zhang, Jiahua ; ... More +

Hu, Yufeng ; Liu, Lin ; Larson, Kristine M. ; Schaefer, Kevin M. ; Zhang, Jiahua ; Yao, Yibin Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information) Less -
Description:

Ground surface over permafrost area undergoes seasonal subsidence and uplift caused by the annual thawing and freezing of the active layer. Applying the Global Positioning System (GPS) interferometric re ﬂectometry technique to the signal-to-noise ratio data collected by a continuously operating GPS station in a permafrost area in Barrow, we retrieve the daily surface elevation changes onsnow-free days over a decade (2007 –2016). Among these years, 2016 had the longest snow-free season, offering the longest and most complete records of elevation changes. Use this year as an example, we show that the ground subsided in thaw season and then uplifted from September to early November (freezingseason) with an amplitude of 5.1 ± 0.2 cm. We also develop a composite model that includes both thaw and freeze indices to characterize the cyclic movements. Our composite model effectively explains the observed
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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 45(11), 5581-5589
DOI:

https://doi.org/10.1029/2018gl077960
ISSN:

0094-8276;1944-8007;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:f1dc35b503d48195fef8bce61ea03e5d65f591964fcf9bfc5f1ffbd08bf3e7fe
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https://repository.library.noaa.gov/view/noaa/53503/noaa_53503_DS1.pdf
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