LANDSLIDE IN KEBUMEN TERITORY SOUTH PART CENTRAL JAVA

Convention Bandung 2004 (CB2004) The 33^rd Annual Convention & Exhibition 2004

Indonesian Association of Geologist Horizon Hotel, 29-30 Nov, 1 Oct 2004, Bandung

LANDSLIDE IN KEBUMEN TERITORY
SOUTH PART CENTRAL JAVA

Eko Soebowo, Herryal Z. Anwar, Dwikorita Karnawati

Pusat Penelitian Geoteknologi – LIPI

Abstract

Kebumen Region and others Southern Part of Central Java have a long history on landslide hazard occurrences. Landslides in this area are influenced by the litological condition, morphology, structure, hidrology, rainfall and others factor. Therefore, landslides potential area information is primarily important to design the effective mitigation system. Engineering geological study which has been done in this area indicate that landslides distribution concentrate mainly at Ayah-Karangbolong-Alihan-Rowokele area, at litological unit of weathered volcanic breccia with structures zone at this area, and at contact zone between this rocks and sedimentary rock. Whereas at Tugu, Panusupan, Sambeng, North Karangsambung at litology marly clay and tuffaceous sandstone and phyllite. The landslide tipical is generally debris flow, slump and creeping. The result of this study are useful to design the mitigation strategy of landslide hazard and also may be used for land conservation requirement, particularly to develop a Master Plan of this area.