IDENTIFICATION OF SUBSURFACE STRUCTURE OF BALI ISLAND, INDONESIA WITH MAGNETIK AND GRAVITY METHODS
Bali Island is one example of a volcanic arc located at the transition from the continental plate to the oceanic plate. This causes the uniqueness of the volcanic conditions of Bali Island. On Bali Island there are several volcanoes which are volcanic complexes that have had very violent eruption...
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| Format: | Dissertations |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/86669 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Bali Island is one example of a volcanic arc located at the transition from the
continental plate to the oceanic plate. This causes the uniqueness of the volcanic
conditions of Bali Island. On Bali Island there are several volcanoes which are
volcanic complexes that have had very violent eruptions in the past and recently there
have been several swarm earthquakes and eruptions. Therefore, it is very important to
know such as the source of volcanic magma, the moho layer under Bali Island, and
why current volcanic activity is on Mount Agung based on the role of subsurface
structures. That is why the magnetic and gravity methods used need to be carried out
on the structure under Bali Island and magnetic anomaly analysis with Curie Point
Depth (CPD) for Bali Island. Modeling using magnetic and gravity data produces a
form of structure under the surface of Bali Island, namely in the form of layers of
volcanic products from volcanoes on Bali Island, sedimentary layers consisting of
carbonate and volcanic products, magma pockets, faults and others. Magnetic analysis
using CPD is likely to correlate with the depth of the moho under Bali Island. And how
the continuity of the carbonate-dominated sedimentary layer in the central part of Bali
Island and its implications for the level of volcanic activity on Bali Island. So that the
results of this study can later be used as additional information for the purposes of
mitigating volcanic and earthquake disasters. |
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