Self-potential mapping of the Mataloko and Nage geothermal fields, central Flores, Indonesia for applications on reservoir modeling

Abstract

Self-potential (SP) surveys were carried out in the Mataloko and Nage geothermal fields, Flores Island, East Nusa Tenggara, Indonesia. As a result, the highest positive SP anomaly in Mataloko was observed at the geothermal manifestation area. The numerical simulation result shows the limit of the upflow zone. On the other hand in Nage, no single clear positive anomaly can be seen. The SP profile along the Wae Bana River in Nage suggests the existence of multiple local discharge zones along the river.