IEDA
Dataset Information
MOA-derived Structural Feature Map of the Ross Ice Shelf
Data DOI:
https://doi.org/10.15784/601432
Cite as
Hulbe, C., & Ledoux, C. (2021) "MOA-derived Structural Feature Map of the Ross Ice Shelf" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601432.
AMD - DIF Record(s)
Abstract
The surface of the Ross Ice Shelf (RIS) is textured by flow stripes, crevasses and other fea- tures related to ice flow and deformation. Here, moderate resolution optical satellite images are used to map and classify regions of the RIS characterized by different surface textures. Because the textures arise from ice deformation, the map is used to identify structural provinces with common deformation history. We classify four province types: regions associated with large outlet glaciers, shear zones, exten- sion downstream of obstacles and suture zones between provinces with different upstream sources. Adjacent provinces with contrasting histories are in some locations deforming at different rates, suggest- ing that our province map is also an ice fabric map. Structural provinces have more complicated shapes in the part of the ice shelf fed by West Antarctic ice streams than in the part fed by outlet glaciers from the Transantarctic Mountains. The map may be used to infer past variations in stress conditions and flow events that cannot be inferred from flow traces alone.
Creator(s):
Hulbe, Christina; Ledoux, Christine
Date Created:
2021-02-19
Repository:
USAP-DC (current)
Spatial Extent(s)
West: -150, East: 155, South: -86, North: -77
Award(s)
Version:
1
References
  1. Ledoux, Christine M., Hulbe, Christina L., Forbes, Martin P., Scambos, Ted A., Alley, Karen. Structural provinces of the Ross Ice Shelf, Antarctica. Annals of Glaciology 58(75pt1) 2017. (doi:10.1017/aog.2017.24)
Supplemental Docs
View
Download
README_601432.txt
Data Files
Download
508.3 kB
Boundaries_streaks.zip

MD5 Checksum: 478c8bd9449a8ac3adf8d797d22cfa83 File Type: Text File; ESRI Shape File

Download
132.5 kB
Modified_structures.zip

MD5 Checksum: bb84cd52a216020390e437044f4c60cb File Type: Text File; ESRI Shape File

Download
975.0 kB
NEW_SHAPES2.zip

MD5 Checksum: 681b110ca46d517061a69414f1ff7d24 File Type: Text File; ESRI Shape File

This dataset has been downloaded 5 times since March 2017 (based on unique date-IP combinations)