Distribusi Coulomb Stress Akibat Gempabumi Tektonik Selatan Pulau Jawa berdasarkan Data Gempa Tektonik 1977-2000

Fitri Puspasari, W Wahyudi

Abstract


Telah dilakukan penelitian untuk menghitung distribusi Coulomb stress dengan menggunakan software Coulomb 3.3. Peningkatan nilai perubahan Coulomb stress mengindikasikan adanya akumulasi stress pada batuan. Data penelitian diambil dari katalog ISC (International Seismological Center) dan Global CMT (Global Centroid Moment Tensor). Hasil pengolahan data adalah terjadi peningkatan Coulomb stress di kawasan selatan pulau Jawa dengan kisaran nilai 0,01-1 kPa dan diduga dapat menimbulkan terjadinya akumulasi stress akibat gempabumi tektonik yang mengarah ke bawah puncak gunungapi Merapi.

ABSTRACT


This study has been applied to calculate Coulomb stress distribution using Coulomb 3.3 software. Increasing the value of Coulomb stress changes indicated accumulation of stress on rocks. The data is taken from the catalog of ISC (International Seismological Center) and Global CMT (Global Centroid Moment Tensor). The results of data processing is an increase in Coulomb stress in the South of Java Island with a ranges 0.01-1 kPa and allegedly caused the accumulation of stress due to tectonic earthquake that leads to the volcano.


Keywords


Gempabumi tektonik, perubahan Coulomb stress, sesar

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References


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DOI: http://dx.doi.org/10.12962/j24604682.v13i2.2745

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