Murwanto',, Helmy and Sutikno, Sutikno and Sutarto, Sutarto and Soesilo, Joko (2007) 3.Fenomena geologi akibat gempa tektonik 27 mei 2006. Jurnal Kebencanaan Indonesia, 1 (2). pp. 47-63. ISSN 1978-3450
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Abstract
This paper devotes interpretation result on relationship 0/tectonic earthquake with occurred geological phenomena. The study is based on field observations and measurements, and is supported by secondary collected data from BMG, USGS. PPAlJ, UNOSAT. and Geological Map of Yogyakarta sheet. . Geological interpretation concludes thatthe May 21" 2006 tectonic earthquake was shallow quake on 5.9 Richter Scale, its focus was far above the Benioff's. Zone. The quake was· caused by energy force releases as compression force accumulation of the two plateconvergences, passed over its continue shearing strain between fault blocks. The realized energy had reactivated old fault system of Tertiaryrocks, either the Quaternary sediment cover underneath old faults or exposed old faults. The condition had been responsible for the devas-. tated situation and been available following geological phenomena. The occurred geological phenomena during earthquake were: new joint formations, liquefaction. mass movements cut young fluviovolcanic sediment, underground roar. New joint formation had cut young sediments with Northeast-Southwest, North-South, East-West and Northwest-Southeast trending. Liquefaction during earthquake occurred along fractures. In some localities ita fountain reached 4 meter high and be accompanied by mud, sand and sometimes sulfor smell. Mass movement quit frequent had been occurred in mountain slopes . or in hills cui by faults. Mass movement consists of rock falls. subsidence. landslides and creeps. Devastative buildings followed the earthquake trend Ruin of housing, infrastructures seems to be related 10fracture trends during the earthquake. Geological structure dis- . tribution of the May 21" 2006 earthquake has been devoted after the observation and measurements during andpost-quake. . Keywords: earthquake, geological structure, new joint formations Helmy Murwanto', Sutikno~, Sutartn', Joko Soesilo1 , dan Sutaatn
| Item Type: | Article |
|---|---|
| Additional Information: | earthquake, geological structure, new joint formations |
| Uncontrolled Keywords: | earthquake, geological structure, new joint formations |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Ir., MT SITI UMIYATUN CHOIRIAH |
| Date Deposited: | 15 Mar 2022 04:50 |
| Last Modified: | 15 Mar 2022 07:07 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/27930 |
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