Lakasa, Christianto (2014) KAJIAN KERENTANAN BANJIR LAHAR HUJAN TERHADAP PERMUKIMAN DI DESA KARANGREJO KECAMATAN GARUM KABUPATEN BLITAR PROVINSI JAWA TIMUR. Other thesis, UPN ''VETERAN'' YOGYAKARTA.
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Abstract
Bencana sekunder gunungapi berupa banjir lahar yang dapat mengancam
pemukiman-pemukiman yang terdapat di Desa Karangrejo, Kecamatan Garum,
Kabupaten Blitar, Jawa Timur. Kali Abab adalah salah satu kali yang berhulu di
Gunungapi Kelud. Di Kali Abab telah terjadi pengendapan material sisa letusan
tahun 1990 yang menyebabkan pendangkalan sungai. Sehingga dikhawatirkan
apabila tidak dilakukan penanggulangan yang tepat maka banjir lahar dapat
menerjang pemukiman yang berada di sekitar Kali Abab jika kembali terjadi erupsi.
Tujuan dilakukannya penelitian ini adalah untuk mengetahui kerentanan banjir lahar
hujan terhadap permukiman yang terdapat di Desa Karangrejo dan menentukan
arahan mitigasinya.
Metode yang digunakan dalam penelitian ini yaitu metode survey dan
pengamatan langsung di lapangan dengan melihat karakteristik sungai dan komponen
lingkungan yang rentan terhadap banjir lahar.
Berdasarkan evaluasi hasil penelitian aset-aset rentan terhadap banjir lahar
yang terdapat di sekitar kali Abab adalah sawah, kebun, ladang tani yang merupakan
mata pencaharian penduduk setempat, adapun infrastruktur seperti jalan, jembatan
dan permukiman. Klasifikasi luas area desa Karangrejo yang rentan terhadap banjir
lahar meliputi (1) Klasifikasi Rendah dengan luas area 376,97 Ha, (2) Klasifikasi
Sedang dengan luas area 134,36 Ha, (3) Klasifikasi Tinggi dengan luas area l576,06
Ha. Untuk Perhitungan Kerentanan Total dari setiap parameter kerentanan, Desa
Karangrejo memiliki nilai total 66 sehingga termasuk dalam kelas Sedang.
Kata Kunci : Bencana, Banjir Lahar, Kerentanan, Kali Abab, Desa Karangrejo.
Vulcano secondary disaster such as lahar flood that can threaten the
settlements located at Karangrejo village, Garum district, Blitar regency of East
java. Abab river is on of the rivers which disgorge at Kelud vulcano. On 1990 it has
occured rivers sedimentation because of deposition by eruption residual material. So
that if there is no the right response for the lahar flood at Karangrejo village, the
Lahar flood it would be occured again. This research purpose is to know lahar flood
susceptibility tho the settlements at Karangrejo village and to determine the
mitigation directives.
The method use in this research based on survey and direct observation in
research location by observe the river characteristics and the environmental
components that susceptible of lahar flood.
Based on research result evaluation, appropriate with the assets where
located at around Abab river that susceptible of Lahar flood is rice fields, plantation
and agriculture which is the Karangrejo village people’s livelihood, as for
infrastructure such as roads, bridge and the residential area. Classification area of
the Karangrejo village that have susceptible of lahar flood include : (1)low
classification with 376,97 Ha area, (2) medium classification with 134,36 Ha area,
and (3) high classfication with 1576,06 Ha area. Fror the total susceptibility
calculation based on each parameters of the susceptibility, Karangrejo village has
total value 66, so that the susceptability classification is including on Medium class.
Keywords : Disaster, Lahar flood, Abab River, Karangrejo village
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | Erny Azyanti |
| Date Deposited: | 10 Jun 2016 05:41 |
| Last Modified: | 10 Jun 2016 05:41 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/3573 |
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