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"Indonesian volcanism is related to the subduction (Benioff) zones of the Indo-Australian and the Pacific-Phillipine plates at the contact with the Asian plate. Rows at volcanoes perpendicular to the plate movement point to steepening of the subduction zone with time. Strato volcanoes and also ignimbrite plateaus associated with socalled “volcano-tectonic” depresssions of deep-seated faults are major features. Fluvio-volcanic flows and slopes are common due to the humid tropical climate. Large volcanic landslides and debris flows causing rupture of crater or caldera rims and the collapse of slopes also are important volcanic geomorphological features. The role of geomorphological survey and the use of aerospace technology in volcanic hazard zoning is emphasized."

"ABSTRAKSkripsi ini membahas penyelenggaraan tanggap darurat bencana menurut Undang-Undang No. 24 Tahun 2007 tentang Penanggulangan Bencana beserta peraturan perundangan di bawahnya yang terkait dan juga penyelenggaraan tanggap darurat bencana Gunung Api Merapi di Kabupaten Sleman pada Tahun 2010. Penelitian ini adalah penelitian kualitatif dengan desain deskriptif. Penulisan ini menjelaskan Organisasi dan Tata Kerja Komando Tanggap Darurat Bencana dan Dana yang digunakan dalam menyelenggarakan tanggap darurat bencana. Hasil penelitian menyarankan bahwa perlu dibentuk organisasi tanggap darurat bencana tingkat komunitas/desa; Pemerintah daerah perlu mengintegrasikan langkah-langkah pencegahan dan pengurangan risiko bencana ke dalam kebijakan daerah; pengelolaan dan penggunaan dana harus terukur, jelas, dan berdaya guna, dan berhasil guna.

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ABSTRACTThis thesis is focusing on the disaster emergency responses according to UU No. 24 Year 2007 about the Countermeasures of Disaster along with the related legislations underneath and also the enforcement of emergency responses of natural disaster at Merapi Volcano, Kabupaten Sleman in 2010. This research is using qualitative research method with descriptive design. This research contains the Organization and Procedures of Chain of Command in emergency response and the fund that was used in organizing it. The outcome of this research suggests that an organization for emergency response is needed in community/village level. The local government should integrate preventive measures and risk reduction into local policies; the fund must be managed and used in very transparent, well-measured, effective and efficient way. "

"ABSTRAKThe lahar flow that occurred after the 2012 Gamalama Volcano eruption, leading to the eastern valley flowing downstream through the Togurara River to the center of Ternate City and Sultan Babullah Airport. To overcome the potential of lahar flow in the river since 2013 - 2016, several sabo dams and building facilities have been built. Based on the results of the calculation of deposits that potentially become lahar flows in 2016, the built-in capacity of the Sabodam has not been able to control the volume of sediment in the upstream of the river, then in the year 2017, 2018 constructed several additional Sabodam. In order to determine the effectiveness, feasibility and conditions of the completeness of Sabodam, is done field assessment on 25 ~ 27 September 2018, the method used was a mathematical approach based on sabo technology. The assessment was in the form of a field survey, simple measurements, interviews with the Sabodam management agency and local residents related to the lahar flow that had occurred. With the capacity of several additional Sabodams built in series, the average river bed slope was originally 9.09% to 6.83%. After the construction of Sabodam, the maximum lahar flow was once as high as 7 m, but now it decreases do 4.2 m. As the slope of the Togurara River slopes progressively, the lahar flow rate and its destructive power are reduced, so that Ternate City and Sultan Babullah Airport are spared from lahar disaster."