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) |
|---|---|
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | 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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