Pemodelan Aliran Awan Panas Dengan Menggunakan TITAN2D Untuk Memprediksi Bahaya Awan Panas Gunungapi Merapi Pasca Erupsi 2010

• Main Authors: , Herlan Darmawan, , PROF. DR. rer. nat. JUNUN SARTOHADI, M.SC.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2012
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/100540/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=56947
• Institution: Universitas Gadjah Mada

Pyroclastic flow modeling in Merapi volcano which occured on November, 1st and 3rd, 2010 is done in order to parameterization input in Titan2D. Titan2D is a software which can be used to model a debris avalanches in the earth surface. Inverse model method had been applied in this research. The model was validated toward run out distance and distribution of pyroclastic deposit in Gendol river. Model validation was done by geoeye satelite image, SPOT 5 satelite image, and field checking. The parameters that already validated was used to predict the next eruption. Prediction was carried out by using several scenarios which characterize index eruption of Merapi. The result of prediction model in Titan2D was applied to produce pyroclastic hazard map in Merapi volcano after 2010 eruption and to develop pyroclastic hazard map which already published by BPPTK. The result of parameterization and validation showed that Titan2D is able to model the distribution of pyroclastic flow with bomb � coarse sand materials. Pyroclastic with surges, very fine sand, and hot blast could not be modelled by Titan2D. The result of prediction in Titan2D gave information the villages having high hazard toward pyrclastic flow in the next eruption. Hargo Binangun, Kepuh Harjo, Umbul Harjo, and Glagah Harjo are the villages which located in high pyroclastic hazard area. Analisis of pyroclastic hazard map based on model toward KRB map showed up the KRB map is only appropriate toward VEI 3 (volume 10 million � 100 million m3). KRB map which produced by digitation of pyroclastic deposit in the previous eruption might change if eruption with VEI 4 occurs and it should be modified following the morphological dynamic of the summit of Merapi.