STUDI GEOMORFOLOGI KABUPATEN KEDIRI DAN PEMETAAN BAHAYA DAN RESIKO ALIRAN LAHAR GUNUNGAPI KELUD

Ardli Swardana, Boedi Tjahjono, Baba Barus

Abstract


Kelud volcano is an active volcano in Java, located close to Kediri District. The volcano frequently produce lahar flow contributing to shape its geomorphology characteristics, and some time endanger to people at the area. This research aims are 1) mapping of landform and landuse, and 2) mapping of lahar hazard and risk of Gunung Kelud at Kediri District. The methods implemented are: 1) morphometric analysis and spatial analysis using GIS. Hazard area is divided into proximal area (volcanic cone area) and medial-distal area (slope area), 2) field observation and discussion for mapping of lahar expose area, and 3) identifying risk area through overlay of hazard and landuse map. The results show that fluvio-vulcanic areas is the largest area (60,50%) at Kediri District/City. The dominant landuse is irrigated paddy area (41,1%) at the fluvio-vulcanic landform, and the very hazardous areas is located at the proximal area and the highest risk area of lahar is located at Plosoklaten Subdistrict (46 ha).


Keywords: Geomorphology, hazard, Kelud Volcano, lahar, risk


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