ANALYSIS OF THE SUBSURFACE STRUCTURE OF EGON VOLCANO BASED ON GRAVITY DATA
The distribution of rock density provides crucial information for understanding volcanic behavior and developing mitigation strategies. This study analyses the subsurface of Mount Egon using gravity data obtained from GGMPlus satellite imagery. The collected gravity data were processed with free-a...
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| Main Author: | |
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/83875 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The distribution of rock density provides crucial information for understanding volcanic behavior and
developing mitigation strategies. This study analyses the subsurface of Mount Egon using gravity data
obtained from GGMPlus satellite imagery. The collected gravity data were processed with free-air
correction, Bouguer correction, and terrain correction. The analysis results present a complete
Bouguer anomaly map, which was then separated using the moving average method, resulting in
regional and residual anomalies. Negative gravity anomalies indicate the presence of low-density
rocks, while positive gravity anomalies indicate high-density rocks. Through forward modelling,
information on rock densities was obtained, including basalt with a density of 2.99 ????/????????3
, andesite
lava with a density of 2.79 ????/????????3
, andesite rock with a density of 2.4 ????/????????3
, pumice with a density
of 1.1 ????/????????3
, and lithic andesite with a density of 2.6 ????/????????3
.
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