Sains Malaysiana 44(12)(2015): 1677–1683
Geologic Hazard Risk Assessment of Slopeland Villages in
Southern
Taiwan Using Remote Sensing Techniques
(Penilaian Risiko Bahaya Geologi di
Kampung-kampung Tanah Cerun
di Taiwan Selatan menggunakan Teknik Pengesanan
Jarak Jauh)
SHU-RONG YANG*
& YI-LUNG YEH
Department of Civil Engineering, National Pingtung
University of Science and Technology, Neipu, Pingtung 91201, Taiwan (R.O.C.)
Diserahkan: 22 September 2014/Diterima: 23 Jun 2015
ABSTRACT
Countering the dangers associated the present extreme climate not
only requires continuous improvement of local disaster prevention engineering
infrastructure but also needs an enhanced understanding of the causes of the
disasters. This study investigates the geologic hazard risk of 53 slopeland
villages in Pingtung county of southern Taiwan. First, remote sensing (RS)
techniques were utilized to interpret environmental geology and geologic hazard
zonation, including dip slope, fault, landslide and debris flow. GIS map
overlay analysis was used to further identify the extent of the geologic hazard
zonation. As a final step, field investigation is used to comprehend geologic,
topographic conditions and the geologic hazard risk specific to each locality.
Based on data analysis and field investigation results, this study successfully
integrates RS, GIS and GPS techniques to construct a geologic hazard risk
assessment method of slopeland village. The results of this study can be used
to promote support for future disaster prevention and disaster mitigation
efforts.
Keywords: Geologic hazard; landslide susceptibility; remote
sensing; slopeland village
ABSTRAK
Pembilang bahaya berkaitan iklim melampau semasa bukan sahaja memerlukan
penambahbaikan berterusan infrastruktur kejuruteraan pencegahan
bencana tempatan tetapi juga perlu peningkatan kefahaman tentang
punca berlakunya bencana ini. Penyelidikan ini mengkaji risiko bahaya
geologi di 53 kampung-kampung tanah cerun di daerah Pingtung selatan
Taiwan. Pertama, teknik pengesanan jarak jauh (RS) digunakan untuk
mentafsir geologi alam sekitar dan pengezonan bahaya geologi, termasuk
aliran cerun, gelinciran, tanah runtuh dan aliran puing. Analisis
bertindih peta GIS seterusnya digunakan untuk mengenal pasti tahap
pengezonan bahaya geologi. Sebagai langkah akhir, kajian lapangan
digunakan untuk memahami geologi, keadaan topografi dan risiko bahaya
geologi khusus untuk setiap lokaliti. Berdasarkan keputusan data
analisis dan hasil kajian lapangan, kajian ini berjaya menggabungkan
RS, GIS dan GPS teknik untuk menghasilkan kaedah penilaian risiko
bahaya geologi untuk kampung tanah cerun. Keputusan kajian ini boleh
digunakan untuk meningkatkan sokongan untuk pencegahan bencana pada
masa hadapan dan usaha mitigasi bencana.
Kata kunci: Bahaya geologi;
kampung tanah cerun; kerentanan tanah runtuh; teknik pengesanan
jarak jauh
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*Pengarang
untuk surat-menyurat; email: sryang@mail.npust.edu.tw
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