Geothermal System Interpretation Based on 1D Magnetoteluric Model at Akesahu, North Maluku

A region of east Indonesia with a big geothermal energy potential is Akesahu in the province of North Maluku. Akesahu is located on the island of Tidore. An integration investigation included geological, geochemical, and geophysical survey has been completed to determine of subsurface mapping in this area. There are seven hot springs are found in this area as a surface manifestation of geothermal system. Furthermore, Hg and CO2 mapping has been supporting an investigation due to of ability to indicate a heat fluid leak and structure zone mapping. The presences of these hot spring and also the other supporting data from geological and previously geophysical data could be help on magnetotelluric data interpretation. Based on these previous survey data, data compilation are consistent shown a reservoir prospect in Akesahu area is in the northeastern of Tidore Island. At least, there are three layers shown in LINE-01 and LINE-02 MT section. In addition, the presences of other structures or weak zones that appear on MT seem consistent with the interpretation based on the other data sets and it’s proved by 1-D magnetotelluric data which show the top reservoir is 900 m.