3D inversion of the time-domain electromagnetic data for exploration of submarine hydrothermal deposits using the GEMTIP model
- Masashi Endo (TechnoImaging) | Leif Cox (TechnoImaging) | David Sunwall (TechnoImaging) | Michael Zhdanov (University of Utah and TechnoImaging) | Eiichi Asakawa (JGI, Inc.)
- Document ID
- Society of Exploration Geophysicists
- 2017 SEG International Exposition and Annual Meeting, 24-29 September, Houston, Texas
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Exploration Geophysicists
- 3D, Induced polarization, Extrapolation, Inversion, CSEM
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- 15 since 2007
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This paper presents the results of an application of the time domain electromagnetic (TDEM) method for the exploration of submarine hydrothermal deposits using the generalized effective-medium relaxation model of the IP effect (GEMTIP). The TDEM data were acquired by a specially developed marine TDEM data acquisition system. It is known that the hydrothermal deposits consist of massive sulfides and can produce strong IP effect. In order to take this effect into account in interpretation of the observed data, we assume that the resistivity is frequency dependent and can be characterized by the GEMTIP relaxation model, including the chargeability, the time constant, and the relaxation parameter. The high chargeability anomaly determined by the 3D GEMTIP inversion coincides with the known submarine hydrothermal deposit. This opens a possibility to explore the submarine hydrothermal deposits effectively by marine TDEM method with 3D GEMTIP inversion.
Presentation Date: Wednesday, September 27, 2017
Start Time: 9:45 AM
Presentation Type: ORAL
|File Size||1 MB||Number of Pages||5|
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