Zonasi Hazard Gempa Bumi untuk Wilayah Jakarta
DOI:
https://doi.org/10.5614/jts.2017.24.2.7Keywords:
Hazard gempa, analisa respons dinamik tanah, zonasi hazard.Abstract
Abstrak
Beberapa kejadian bencana gempa bumi yang melanda Indonesia dalam satu dekade ini telah dijadikan isu sangatpenting yang mengharuskan pemerintah untuk memitigasi dampak bencana alam tersebut ke depan. Salah satuupaya untuk meminimalkan kerusakan dan kerugian dari bencana gempa bumi dilakukan dengan memetakan hasilpengukuran hazard gempa di suatu kawasan dengan mempertimbangkan karakteristik gempa, pengaruh geologidan kondisi tanah lokal. Makalah ini mepaparkan studi mikrozonasi di wilayah Jakarta. Analisa respons dinamiktanah dikerjakan dengan program NERA. Hasil studi yaitu peta zonasi hazard gempa bumi berdasar pendekatanyang diadopsi oleh DRM-World Institute for Disaster Risk Management.
Abstract
Several damaging earthquakes occured in the last decades in Indonesia have alerted the government to mitigatefuture damages due to earthquake. One of method to minimize the damages is by performing seismic hazardassessment and risk evaluation as the hazard zonation with respect to ground motion characteristics taking intoaccount sources, local geological and soil conditions. This paper performs a microzonation study for Jakarta. Localsite effects are assessed by carrying out ground response analysis performed with the NERA routines. The zonationmaps are produced with respect to ground shaking intensity in accordance with the manual proposed by WorldInstitute for Disaster Risk Management.
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