Euler deconvolution of gravity data in Geothermal Reconnaissance; the Obama geothermal area, Japan

Abstract

Obama geothermal area is located on the western side of Kyushu Island, southwestern Japan. This area is characterized by high potential geothermal resources that attract most of researchers to study the subsurface structure of the area. Euler deconvolution is applied to newly acquired gravity data to image the subsurface structures thereby aiding the geothermal exploration. The results were compared with the available geologic and geothermal information in order to get a relationship between structures and geothermal resources. These analyses indicate that the dominant subsurface faults trend E W, but N S trending faults also exist. The dominant orientation of these faults provides a geothermal relation between subsurface structures and geothermal resources in the Obama geothermalˆeld.

Exploration and assessment of the geothermal resources in the Hammam Faraun hot spring, Sinai Peninsula, Egypt

“…Previous studies have been conducted on the geological and geophysical explorations for geothermal investigations (Demirel et al, 2004;Heise et al, 2007;Mogi and Nakama, 1993;Saibi et al, 2006Saibi et al, , 2008. MT surveys were carried out on the southern margin of the Mount Amiata geothermal region (Tuscany, Italy) by Volpi et al (2003), with the aim of defining the shallow and deep electric structures related to the local geothermal reservoirs and system heat recharge.…”

3D Numerical model of the Obama hydrothermal–geothermal system, Southwestern Japan

“…Extension is in the N-S direction and compression in the E-W direction [5]. Geological and geophysical studies in the Obama area indicate the existence of faults striking mainly in the E-W direction [6,8,16]. However, there are also N-S, NE-SW, and NW-SE trending faults [16].…”

“…Active volcanoes are also shown. b Location of the Obama Geothermal Field in Shimabara Peninsula that were based mainly on interpretation of geochemical data [7,9,16,19,20].…”

Interpretation of the Bouguer Gravity Data from Burdur Region using the Euler Deconvolution Technique

“…The results were compared with the available geologic and geothermal information in order to get a relationship between structures and geothermal resources (Saibi et al, 2006). the study area.…”