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Landslide Headscarps in Marine Terraces along the Pacific Coast of Washington and Oregon

Dates

Publication Date
Time Period
2024-09-01

Citation

Grant, A.R., LaHusen, S.R., Guarente, D.A., and Perkins, J.P., 2024, Landslide Headscarps in Marine Terraces along the Pacific Coast of Washington and Oregon: U.S. Geological Survey data release, https://doi.org/10.5066/P13ARFZM.

Summary

We present a set of 617 landslide headscarps along marine terraces in Oregon and Washington State. Headscarps (as polyline features) were mapped from <1 m resolution lidar in the first major terrace along the Pacific coastline of Washington and Oregon states. Only slides originating in mapped sedimentary rock units, or sedimentary rock capped by a veneer of glacial till, were included. Mapping was also limited to only include landslides that could be categorized as rotational (that is, movement of the landslide shows evidence for sliding along a circular or curved path. Other landslide failure styles present along the study region, like translational slides, ravels, and rockfall, are omitted from this dataset. Data are provided in [...]

Contacts

Point of Contact :
Alex R Grant
Originator :
Alex R Grant, Sean R Lahusen, David A. Guarente, Jonathan P Perkins
Metadata Contact :
Alex R Grant
Publisher :
US Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Natural Hazards
SDC Data Owner :
Earthquake Science Center

Attached Files

Click on title to download individual files attached to this item.

CoastalHeadscarps_Rotational.csv 988.25 KB text/csv
Coastal_Headscaprs_Rotational.zip 343.64 KB application/zip

Purpose

These landslide headscarps were mapped to support the work of LaHusen et al. (in review) to estimate the triggering mechanism of landslides along the coast of Washington and Oregon. LaHusen et al. find a relationship between the material properties, hydraulic conditions, terrace geometry, and landslide size that allows for the identification of landslides that are most likely to have been triggered by past earthquakes. Where applicable, estimates of past minimum shaking intensities from Cascadia subduction zone earthquakes are included in these data, following the methods described in Lahusen et al.

Rights

This work is marked with Creative Commons Zero v1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/).

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  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P13ARFZM

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