Evaluasi Satuan Wilayah Pengembangan (SWP) Dengan Analisis Spasial Risiko Bahaya Seismik Berdasarkan Faktor Indeks Kerentanan Seismik dan Kepadatan Penduduk di Kabupaten Bantul

Abstract

The regional spatial plan (RTRW) has an important role in the implementation of regional
development. Bantul District divide its territory into six Regional Unit Development (SWP). This
study aims to determine the seismic vulnerability index (kg) in Bantul based on microtremor
data of BMKG, mapping the population density (persons/km2) by district based on BPS Bantul,
perform seismic hazard risk analysis based on the parameters of the seismic vulnerability index
and population density, and do a comparison and analysis of seismic hazard for Regional Unit
Development (SWP) in Bantul. This study uses microtermor data of BMKG, population density
derived from the BPS and the SWP data from BAPEDA Bantul.
The results showed the seismic vulnerability index in Bantul between 0.01 - 38.83 and is
divided into five (5) zone, a zone between 0.01 to 2.29, the zone between 2.30 - 2.97, the zone
between 2.98 - 5.26, the zone between 5.26 - 12.94 and > 12.94. Regions with low risk contained
in the District of Sedayu, Pajangan, Kasihan, Bantul, Pandak, Srandakan, Sanden, Dlingo, Imogiri
and Pundong. The area with the risk of being found on the District of Piyungan, Pleret, Jetis,
Imogiri, Kasihan, Sewon, Bambanglipuro, Pundong, Pandak, Srandakan, Sanden, and Kretek.
While there is a region with a high risk in the District of Banguntapan, Sewon and Kasihan. SWP
for residential development direction contained in the SWP I, II, IV and V. SWP who are at high
risk area for seismic hazard, ie SWP II.