GPS-derived estimates of surface mass balance and ocean-induced basal melt for Pine Island Glacier ice shelf, Antarctica

Shean, David E.; Christianson, Knut; Larson, Kristine M.; Ligtenberg, Stefan R. M.; Joughin, Ian R.; Smith, Ben E.; Stevens, C. Max; Bushuk, Mitchell; Holland, David M.

doi:10.5194/tc-11-2655-2017

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GPS-derived estimates of surface mass balance and ocean-induced basal melt for Pine Island Glacier ice shelf, Antarctica

2017
By Shean, David E. ; Christianson, Knut ; Larson, Kristine M. ; ...
Source: The Cryosphere, 11(6)

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Journal Title:

The Cryosphere
Personal Author:

Shean, David E. ; Christianson, Knut ; Larson, Kristine M. ; Ligtenberg, Stefan R. M. ; Joughin, Ian R. ; ... More +

Shean, David E. ; Christianson, Knut ; Larson, Kristine M. ; Ligtenberg, Stefan R. M. ; Joughin, Ian R. ; Smith, Ben E. ; Stevens, C. Max ; Bushuk, Mitchell ; Holland, David M. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) Less -
Description:

We used long-term GPS data and interferometric reflectometry (GPS-IR) to measure velocity, strain rate and surface elevation for the PIG ice shelf – a site of significant mass loss in recent decades. We combined these observations with high-res DEMs and firn model output to constrain surface mass balance and basal melt rates. We document notable spatial variability in basal melt rates but limited temporal variability from 2012 to 2014 despite significant changes in sub-shelf ocean heat content.
Keywords:

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Estimates Glacial Erosion
Source:

The Cryosphere, 11(6)
DOI:

https://doi.org/10.5194/tc-11-2655-2017
Document Type:

Journal Article
Place as Subject:

Pine Island Glacier (Antarctica)
Rights Information:

CC BY
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Submitted
Main Document Checksum:

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urn:sha256:3968710830cd4a044a07181729b9275c2eb314a0ab3e0e3717821afe7d6a1aba
Download URL:

https://repository.library.noaa.gov/view/noaa/32295/noaa_32295_DS1.pdf
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