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Electromagnetic transient soundings on the east rift geothermal area of Kilauea Volcano, Hawaii : a study of interpretational techniques

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Item Summary Kauahikaua, James P. 2011-12-14T00:56:52Z 2011-12-14T00:56:52Z 2011-12-13
dc.description ill
dc.description maps
dc.description.abstract Seventeen electromagnetic transient soundings were done on the lower east flank of Kilauea volcano, Hawaii. Each sounding is based on the response or the earth as a function of time to a step function of current in a horizontal linear source. Interpretation of these response measurements is usually done by matching the data to standard model curves or asymptotic expressions; however, these methods presuppose that each datum has been measured with a relative precision (e.g. a precision of 5%) whereas, sounding, each datum is commonly measured with an absolute precision (e.g. a precision of 10µv). Therefore, a general inversion technique based on linear comparisons between the data and model values was used for the interpretations of the data in this study. The resulting geoelectric model shows that the structure is uniform vertically to a depth of 1000 m below sea level. There are broad, but distinct, lateral variations in the interpreted conductivity values ranging from 0.10 to 0.16 -mho/m in most of east Puna to anomalous values of 0.30 to 0.50 mho/m in a particular area south of the rift at Puu Honuaula (see Figure 7). Based on these conductivity estimates, groundwater temperatures in the anomalous area are not expected to exceed 1500 C to depths of 1000 m below sea level.
dc.format.extent xi, 88 leaves
dc.language.iso en-US
dc.publisher University of Hawaii at Manoa
dc.relation Theses for the degree of Master of Science (University of Hawaii at Manoa). Geology and Geophysics; no. 1434 
dc.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
dc.subject electromagnetic
dc.subject Kilauea
dc.subject geothermal exploration
dc.subject Kilauea East Rift Zone
dc.subject geophysics
dc.subject Puna
dc.subject Hawaii
dc.subject theses
dc.subject.lcsh Electromagnetic measurements
dc.subject.lcsh Rifts (Geology)--Hawaii--Kilauea Volcano Region
dc.subject.lcsh Kilauea Volcano (Hawaii)
dc.title Electromagnetic transient soundings on the east rift geothermal area of Kilauea Volcano, Hawaii : a study of interpretational techniques
dc.type Thesis
dc.type.dcmi Text
dc.contributor.department Geology and Geophysics 12/1/1976
local.identifier.callnumber Q111 .H3 no.1434 
local.thesis.degreelevel M.S.
Appears in Collections: M.S. - Geology and Geophysics
The Geothermal Collection

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