TY - JOUR
T1 - First horizontal derivative and Euler Deconvolution in application for reconstructing structural signature over the Blawan-Ijen Geothermal area
AU - Daud, Yunus
AU - Sulistyo, Agus
AU - Fahmi, Fikri
AU - Nuqramadha, Wambra Aswo
AU - Fitrianita, F.
AU - Sesesega, Rhyno Senbyla
AU - Rosid, Syamsu
AU - Pati, Gesang Panggrahito
AU - Maulana, Muhamad Riziq
AU - Khoiroh, Mufidatul
AU - Rahman, Khalif Radhiyya
AU - Subroto, Wisnu
N1 - Funding Information:
The author would like to express gratitude to Directorate of Research and Community Engagement of Universitas Indonesia (DRPM UI) for funding this project through PITTA program. The authors also thank the management of PT NewQuest Geotechnology for supporting this study by providing the software. The authors gratefully acknowledge support from PT Medco Cahaya Geothermal that has allowed to conduct data acquisition.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/1/1
Y1 - 2019/1/1
N2 -
A ground gravity survey was conducted over the Blawan-Ijen geothermal area covering about 176 km
2
area. A total of 72 stations were measured with 1.0-1.5 km spacing. The data obtained were then processed using several corrections for gravity data to get Complete Bouguer Anomaly (CBA). The gravity method was chosen because of the ability to detect geological structures corresponding to the rocks density of the field study. Two types of gravity technique, First Horizontal Derivative (FHD) and Euler Deconvolution (ED), have become widely used to interpret the structure condition. FHD technique delineates a geological boundary of different density body while ED technique estimates a source location and depth of structures. Furthermore, 3-D inversion of magetotelluric data result was also used as a reference to support 2-D gravity forward modeling. The main structure which probably controlled the emergence of Blawan-Ijen hotspring is indicated by maximum FHD value at the northern part area. Moreover, the ED result shows the depth of structures in Blawan-Ijen geothermal area is mostly about 250-1000 meters.
AB -
A ground gravity survey was conducted over the Blawan-Ijen geothermal area covering about 176 km
2
area. A total of 72 stations were measured with 1.0-1.5 km spacing. The data obtained were then processed using several corrections for gravity data to get Complete Bouguer Anomaly (CBA). The gravity method was chosen because of the ability to detect geological structures corresponding to the rocks density of the field study. Two types of gravity technique, First Horizontal Derivative (FHD) and Euler Deconvolution (ED), have become widely used to interpret the structure condition. FHD technique delineates a geological boundary of different density body while ED technique estimates a source location and depth of structures. Furthermore, 3-D inversion of magetotelluric data result was also used as a reference to support 2-D gravity forward modeling. The main structure which probably controlled the emergence of Blawan-Ijen hotspring is indicated by maximum FHD value at the northern part area. Moreover, the ED result shows the depth of structures in Blawan-Ijen geothermal area is mostly about 250-1000 meters.
UR - http://www.scopus.com/inward/record.url?scp=85065617589&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/254/1/012008
DO - 10.1088/1755-1315/254/1/012008
M3 - Conference article
AN - SCOPUS:85065617589
SN - 1755-1307
VL - 254
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012008
T2 - 7th ITB International Geothermal Workshop 2018, IIGW 2018
Y2 - 21 March 2018 through 22 March 2018
ER -