Subsurface Structure Interpretation Beneath of Mt. Pandan Based on Gravity Data

Southeast Asian Conference on Geophysics

Santoso, D.^1 ; Wahyudi, E.J.^1 ; Alawiyah, S.^1 ; Nugraha, A.D.^1 ; Widiyantoro, S.^1 ; Kadir, W.G.A.^1 ; Supendi, P.^2 ; Wiyono, S.^2 ; Zulkafriza^3

Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Indonesia^1

Indonesian Agency for Meteorological, Climatological and Geophysical, Indonesia^2

Postdoctoral Researcher, GREAT, ITB, Indonesia^3

关键词: Active volcanoes;    Dormant volcano;    Gravity data;    Gravity interpretation;    Gravity measurement;    Magma bodies;    Magmatic activity;    Subsurface structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/62/1/012038/pdf
DOI  :  10.1088/1755-1315/62/1/012038

来源: IOP

【 摘 要 】

Mt. Pandan is one of the volcano that state as dormant volcano. On the other hand, Smyth et al. (2008) defined that Mt. Pandan is an active volcano. This volcano is apart a volcanic chain in Java island which is trending east-west along the island. This volcanic chain known as present day volcanic arc. Mt. Wilis is located in the south and it relatively much bigger compare to Mt. Pandan. There were earthquakes activity experienced in the surrounding Mt. Pandan area in the past several years. This event is interesting, because Mt. Pandan is not classify as the active volcano according to the list of volcanoes in Indonesia. On the otherhand Smyth et. al. (2008) mentioned that G. Pandan as modern volcanic which is located in Kendeng Zone of East Java. Gravity measurement around Mt. Pandan area was done in order to understand subsurface structure of Mt. Pandan. Gravity interpretation results shows that there is a low density structure beneath Mt. Pandan. It could be interpreted as existing of magma body below the surface. Some indication of submagmatic activities were found as hot spring and warm ground. Therefore it could be concluded that there is a possibility of magmatic activity below the Mt. Pandan.