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Inventory of rock avalanches in western Glacier Bay National Park and Preserve, Alaska, 1984-2016: a baseline data set for evaluating the impact of climate change on avalanche magnitude, mobility, and frequency

Dates

Acquisition
1984-06-01
Acquisition
2016-09-30
Publication Date

Citation

Bessette-Kirton, E.K. and Coe, J.A., 2016, Inventory of rock avalanches in western Glacier Bay National Park and Preserve, Alaska, 1984-2016: a baseline data set for evaluating the impact of climate change on avalanche magnitude, mobility, and frequency: U.S. Geological Survey data release, https://doi.org/10.5066/F7C827F8.

Summary

The effects of climate change have the potential to impact slope stability. Negative impacts are expected to be greatest at high northerly latitudes where degradation of permafrost in rock and soil, debuttressing of slopes as a result of glacial retreat, and changes in ocean ice-cover are likely to increase the susceptibility of slopes to landslides. In the United States, the greatest increases in air temperature and precipitation are expected to occur in Alaska. In order to assess the impact that these environmental changes will have on landslide size (magnitude), mobility, and frequency, inventories of historical landslides are needed. These inventories provide baseline data that can be used to identify changes in historical and [...]

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Attached Files

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LandsatImageryUsed.xlsx
“Table of Landsat images used”
15.26 KB
GlacierBayRockAvalanche.gdb.zip
“Rock avalanche ArcGIS geodatabase”
102.92 KB
Metadata.zip
“Rock avalanche metadata”
26.7 KB
GlacierBayRockAvalanches.xlsx
“Table of rock avalanche data”
15.34 KB
Summary_metadata.xml
“Summary metadata”
Original FGDC Metadata

View
25.89 KB

Purpose

The purpose of this study was to create an inventory of historical rock avalanches in the western part of Glacier Bay National Park and Preserve, Alaska. This inventory serves as a basis for research on the response of slope stability to climate change. The inventory spans a 33-year period from 1984 to 2016 and provides baseline data that can be used to identify changes between historical and future landslide magnitude, mobility, and frequency. GIS map data include the geometry and location of 24 rock avalanches that occurred in the western part of Glacier Bay National Park from June 1984 to September 2016. Attribute data for each mapped rock avalanche include: the date, or range in possible dates, of occurrence; total area of the source and deposit; curvilinear travel distance; and the change in elevation from the avalanche head scarp to toe.

Map

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  • USGS Data Release Products

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Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7C827F8

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