Lateral spread hazard mapping of the northern Salt Lake Valley, Utah, for a M7.0 scenario earthquake
Earthquake Spectra
By: M.J. Olsen, S.F. Bartlett, and B.J. Solomon
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Abstract
This paper describes the methodology used to develop a lateral spread-displacement hazard map for northern Salt Lake Valley, Utah, using a scenario M7.0 earthquake occurring on the Salt Lake City segment of the Wasatch fault. The mapping effort is supported by a substantial amount of geotechnical, geologic, and topographic data compiled for the Salt Lake Valley, Utah. ArcGIS?? routines created for the mapping project then input this information to perform site-specific lateral spread analyses using methods developed by Bartlett and Youd (1992) and Youd et al. (2002) at individual borehole locations. The distributions of predicted lateral spread displacements from the boreholes located spatially within a geologic unit were subsequently used to map the hazard for that particular unit. The mapped displacement zones consist of low hazard (0-0.1 m), moderate hazard (0.1-0.3 m), high hazard (0.3-1.0 m), and very high hazard (> 1.0 m). As expected, the produced map shows the highest hazard in the alluvial deposits at the center of the valley and in sandy deposits close to the fault. This mapping effort is currently being applied to the southern part of the Salt Lake Valley, Utah, and probabilistic maps are being developed for the entire valley. ?? 2007, Earthquake Engineering Research Institute.
Suggested Citation
Olsen, M., Bartlett, S., Solomon, B., 2007, Lateral spread hazard mapping of the northern Salt Lake Valley, Utah, for a M7.0 scenario earthquake: Earthquake Spectra, v. 23, no. 1, p. 95-113, https://doi.org/10.1193/1.2424987.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Lateral spread hazard mapping of the northern Salt Lake Valley, Utah, for a M7.0 scenario earthquake |
| Series title | Earthquake Spectra |
| DOI | 10.1193/1.2424987 |
| Volume | 23 |
| Issue | 1 |
| Publication Date | February 01, 2007 |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Earthquake Spectra |
| First page | 95 |
| Last page | 113 |