Tilt measurements at Long Valley caldera, California, May-August 1982
Open-File Report
82-893
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Abstract
The Mammoth Lakes area in east-central California has experienced unusual seismicity and ground deformation since 1978, highlighted by four M>6 earthquakes in May 1980 and by the discovery soon thereafter of a broad uplift within Long Valley caldera. Recurrent seismic swarms during June 1980-May 1982 raised concern over the possibility of renewed volcanic activity in the foreseeable future, prompting a USGS Notice of Potential Volcanic Hazard on 28 May 1982. As part of an intensified Long Valley monitoring effort sponsored by the USGS Volcanic Hazards Program, a network of nine tilt sites was established near Mammoth Lakes in May and July 1982. This report describes those stations and presents results from three tilt resurveys during July-August 1982.
Suggested Citation
Dzurisin, D., Cashman, K.V., Johnston, D.A., Sylvester, A.G., 1982, Tilt measurements at Long Valley caldera, California, May-August 1982: U.S. Geological Survey Open-File Report 82-893, 34 p., https://doi.org/10.3133/ofr82893.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Tilt measurements at Long Valley caldera, California, May-August 1982 |
| Series title | Open-File Report |
| Series number | 82-893 |
| DOI | 10.3133/ofr82893 |
| Year Published | 1982 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Volcano Science Center |
| Description | 34 p. |
| Country | United States |
| State | California |
| Other Geospatial | Long Valley caldera |