Initial Observations of Landslides triggered by the 2018 Anchorage, Alaska earthquake
Dates
Publication Date
2021-06-01
Time Period
2018-11-30
Citation
Martinez, S.N., Schaefer, L.N., Allstadt, K.E., and Thompson, E.M., 2021, Initial Observations of Landslides triggered by the 2018 Anchorage, Alaska earthquake: U.S. Geological Survey data release, https://doi.org/10.5066/P9S5PVON.
Summary
This data release provides the locations of 43 landslides that occurred during the 2018 Anchorage, Alaska earthquake mapped from high-resolution lidar (1-m). Lidar data can be accessed via the Alaska Division of Geological and Geophysical Surveys elevation portal (https://elevation.alaska.gov). Each landslide is represented as a point corresponding to the approximate location of the mid-point of the landslide head scarp. Wherever possible, the outline of (39) landslides are also provided as polygons. Areal coverage of this data release is constrained to the availability of the 1-m resolution lidar. Within this area, this data builds upon Grant et al. (2020) by more accurately locating those observed landslide features and mapping their [...]
Summary
This data release provides the locations of 43 landslides that occurred during the 2018 Anchorage, Alaska earthquake mapped from high-resolution lidar (1-m). Lidar data can be accessed via the Alaska Division of Geological and Geophysical Surveys elevation portal (https://elevation.alaska.gov). Each landslide is represented as a point corresponding to the approximate location of the mid-point of the landslide head scarp. Wherever possible, the outline of (39) landslides are also provided as polygons. Areal coverage of this data release is constrained to the availability of the 1-m resolution lidar. Within this area, this data builds upon Grant et al. (2020) by more accurately locating those observed landslide features and mapping their extent where possible.
References Cited:
Grant, A.R., Jibson, R.W., Witter, R.C., Allstadt, K., Thompson, E., Bender, A.M., and Schmitt, R.G., 2020, Field reconnaissance of ground failure triggered by shaking during the 2018 M7.1 Anchorage, Alaska, earthquake: U.S. Geological Survey data release, https://doi.org/10.5066/P99ONUNM.
Martinez, S.N., Schaefer, L.N., Allstadt, K.E., and Thompson, E.M., 2021, Evaluation of Remote Mapping Techniques for Earthquake-Triggered Landslide Inventories in an Urban Subarctic Environment: A Case Study of the 2018 Anchorage, Alaska Earthquake: Frontiers in Earth Science, v. 9, https://doi.org/10.3389/feart.2021.673137.
The data were created to test and develop landslide mapping methods in Anchorage, AK. The data are not representative of all ground failure that occurred as a result of the 2018 earthquake but rather only those landslides that could be mapped within the region where the high-resolution (1-m) lidar data are available. Lidar data can be accessed via the Alaska Division of Geological and Geophysical Surveys elevation portal (https://elevation.alaska.gov). Within this area, this data builds upon Grant et al. (2020) by more accurately locating those observed landslide features and mapping their extent when possible.
