Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States
Journal Article: Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States
Abstract
A better understanding of active volcanic areas in the United States through electromagnetic geophysical studies received foundation from the many surveys done for geothermal exploration in the 1970's. Investigations by governmental, industrial, and academic agencies include (but are not limited to) mapping of the Cascades. Long Valley/Mono area, the Jemez volcanic field, Yellowstone Park, and an area in Colorado. For one example - Mt. Konocti in the Mayacamas Mountains, California - gravity, magnetic, and seismic, as well as electromagnetic methods have all been used in an attempt to gain a better understanding of the subsurface structure. In each of these volcanic regions, anomalous zones were mapped. When conductive, these anomalies were interpreted to be correlated with hydrothermal activity and not to represent a magma chamber. Electrical and electromagnetic geophysical methods can offer valuable information in the understanding of volcanoes by being the method which is most sensitive to change in temperature and, therefore, can best map heat budget and hydrological character to aid in prediction of eruptions.
- Author
- Catherine K. Skokan
- Published Journal
- DOI
- Not Provided
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Citation
Catherine K. Skokan. 1993. Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States. Journal of Volcanology and Geothermal Research.
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Related Geothermal Exploration Activities
Activities (7)
- Aeromagnetic Survey At Clear Lake Area (Skokan, 1993)
- Direct-Current Resistivity At Clear Lake Area (Skokan, 1993)
- Direct-Current Resistivity Survey At Clear Lake Area (Skokan, 1993)
- Geothermal Literature Review At U.S. West Region (Skokan, 1993)
- Ground Gravity Survey At Clear Lake Area (Skokan, 1993)
- Teleseismic-Seismic Monitoring At Clear Lake Area (Skokan, 1993)
- Telluric Survey At Clear Lake Area (Skokan, 1993)