An Updated Study of Discovering Blawan-Ijen Geothermal Prospect Area Using Gravity and Magnetic Methods

Yunus, Yasir Arafat, Dhara Adhnandya Kumara, Diah Anastasia Fortuna, Faris Maulana Yunus, Haidar Firdaus Avicienna, Farhan

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

The Blawan-Ijen volcanic complex is located in Bondowoso regencies, East Java province. The complex is expected to have geothermal system which is indicated by the occurrence of Blawan hotspring, acid lake on Ijen Crater and alterations. In 2017, measurements of gravity and magnetic methods have been conducted for the first time through the PITTA 2017 program. In 2018, further measurements are carried out to infill the previous data in order to strengthen the interpretation results. There are 151 stations obtained from each method until 2018. In this study, gravity method is used to detect the contrast density of an anomalous body while magnetic method is applied to discover the location of demagnetization zone. This paper presents the integration of both methods in geothermal exploration to determine the geothermal prospect area. The result of CBA and residual gravity indicated the existence of high gravity anomaly in the center to the southwest of the study area. Moreover, after processing RTP on magnetic data, there is the presence of low magnetic anomaly usually associated with demagnetization zone. Generally, the overall results supported one each other and pointed out the occurrence of the geothermal prospect possibly around the center of the study area.

Original languageEnglish
Article number01007
JournalE3S Web of Conferences
Volume73
DOIs
Publication statusPublished - 21 Dec 2018
Event3rd International Conference on Energy, Environmental and Information System, ICENIS 2018 - Semarang, Indonesia
Duration: 14 Aug 201815 Aug 2018

Keywords

  • Blawan-Ijen
  • Geothermal area
  • Gravity
  • Magnetic
  • Prospect zone

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