2017 GPR Observations of the Whillans and Mercer Ice Streams and Modeling Results

The dataset includes GPS coordinates for crevasse/fracture locations picked from 350MHz and 400Mhz frequency GPR dataset in the Whillans/Mercer Shear Margin along the SALSA traverse route with associated kinematic outputs for each feature (shear strain rate, vorticity, dilatation). GPS coordinates a...

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Bibliographic Details
Main Author: Kaluzienski, Lynn
Format: Dataset
Language:English
Published: U.S. Antarctic Program (USAP) Data Center 2020
Subjects:
GPR
GPS
Crevasses
Ice Sheet Flow Model
Ice Shelf Dynamics
Glaciology
Glaciers/Ice Sheet
Snow/Ice
Cryosphere
Antarctica
Antarctic
The Antarctic
Mercer
Whillans
Antarc*
Ice Sheet
Ice Shelf
Online Access:https://dx.doi.org/10.15784/601402
https://www.usap-dc.org/view/dataset/601403
Description
Summary:The dataset includes GPS coordinates for crevasse/fracture locations picked from 350MHz and 400Mhz frequency GPR dataset in the Whillans/Mercer Shear Margin along the SALSA traverse route with associated kinematic outputs for each feature (shear strain rate, vorticity, dilatation). GPS coordinates are in the Antarctic Polar Stereographic projection (EPSG:3031). The dataset also includes initialization and output files of a numerical ice flow simulation of the region . The Ice Sheet System Model (ISSM) model was used to solve a 100 year transient stress balance solution of the region with ~10 kPA/yr friction increase downstream of the shear margin between the Whillans and Mercer ice streams.

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