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"Kecamatan Cilacap Selatan merupakan kecamatan yang memiliki risiko besar untuk mengalami kejadian bencana tsunami. Letak wilayah tersebut berdekatan dengan celah seismik dalam area megathrust segmen Jawa Barat-Jawa Tengah yang apabila pecah diprediksikan menghasilkan tsunami. Penelitian ini bertujuan untuk menganalisa dampak gemba bumi megathrust segmen Jawa Barat-Jawa Tengah terhadap Kecamatan Cilacap Selatan melalui model tsunami yang dibuat. Model dibuat berdasarkan persamaan air dangkal (shallow water equations) pada perangkat lunak COMCOT v1.7. Dua skenario multi-faults dan single-fault dibuat dengan magnitudo acuan yang sama sebesar 8.7 Mw di mana hasil pengamatan dari kedua skenario menunjukan waktu tiba tsunami diestimasi membutuhkan waktu 43 menit, ketinggian genangan berkisar 0,5 – 24 meter, total luas area inundasi berkisar 1128,14 – 1145,4 hektar, dan ketinggian maksimum tsunami berkisar 11,476 – 13,054 meter. Kemudian, peta rawan bahaya tsunami untuk kedua skenario dibuat berdasarkan area inundasi tersebut dan dibandingkan dengan peta rawan bahaya tsunami oleh DLR & GTZ.......The region of South Cilacap is known to experience natural disasters in the form of tsunamis. Their geographic location is near seismic gap zones in megathrust areas segmented in West-Central Java. It is predicted that the spit of the West-Central Java segment would lead to a tsunami. This research is conducted to analyze the effects of a megathrust earthquake in the West-Central Java segment in regards to the area of South Cilacap through the model tsunami. This model is based on the shallow water equations in the software COMCOT v1.7. Two scenarios, multi-faults and single-fault, is made with a reference magnitude of 8.7 Mw in which the results show that the arrival time of tsunamis is estimated to take 43 minunies, inundation height ranging from 0,5 – 24 meters, total inundation area ranges from 1128,14 – 1145,4 hectares, and the maximum tsunami height ranges from 11,476 – 13,054 meters. Then, tsunami hazard maps for both scenarios were made based on the inundated areas and compare it with the tsunami hazard maps produced by DLR & GTZ."

"Bali, merupakan salah satu provinsi di Indonesia yang rawan terhadap bencana tsunami, hal ini dikarenakan lokasi Bali dekat dengan segmen atau zona pertemuan lempeng Eurasia dan Indo-Australia. Pada tahun 1977, Bali terkena dampak tsunami yang terjadi akibat gempabumi pada zona megathrust Sumba, dan pada tahun 1994 terkena dampak dari tsunami akibat gempabumi pada zona megathrust daerah Jawa Timur. Penelitian ini bertujuan untuk memodelkan proses penjalaran gelombang tsunami dan jangkauan inundasi. Penelitian akan berfokus untuk memodelkan tsunami akibat tsunami historik banyuwangi 7.8Mw, dan skenario gempa zona megathrust kekuatan 8.4 Mw dan 9.0Mw, dengan fokus area penelitian kecamatan Kuta, Kabupaten Badung, Bali. Pemodelan dilakukan menggunakan software ComMIT, dengan mengamati 3 titik pengamatan, area pantai Seminyak, pantai Kuta, dan pantai Kedonganan. Berdasarkan penelitian dibutuhkan waktu 29 hingga 32 menit untuk gelombang mencapai darat, dengan ketinggian maksimum gelombang 740 hingga 1557 cm. Sementara jangkauan maksimum tsunami 600 hingga 1600 meter dari garis pantai. ......Bali is a province in Indonesia that vulnerable to tsunamis, this is due to its location that lies near the convergent boundary of the Indo-Australian and Eurasian plates. In 1977, Bali got affected by the tsunami from Sumba’s megathrust earthquake, while in 1994 got affected by the tsunami from West Java’s megathrust earthquake. This research aims to model the propagation of the historical Banyuwangi’s tsunami with a magnitude  of 7.8Mw, and other scenarios of Bali’s megathrust segment earthquake with magnitudes of 8.4Mw and 9.0Mw, which were observed on three beach point, Seminyak beach, Kuta beach, and Kedonganan beach. Based on the simulation results, the tsunami wave took 29 to 32 minutes time, with a 740 to 1557 cm maximum wave amplitude. While the maximum propagation is 600 to 1600 m from the observed points."

"Penelitian ini menghubungkan antara mitigasi bencana gempa bumi dengan penataaan perkotaan di Provinsi DKI Jakarta. Pendekatan penelitian kualitatifeksploratif. Unit analisis penelitian adalah gedung tinggi di DKI Jakarta. Hasil penelitian menunjukkan bahwa tata letak DKI Jakarta terhadap zona subduksi Selat Sunda/Sunda Megathrust memiliki implikasi yang signifikan terhadap Jakarta. Mitigasi bencana gempa bumi dalam rencana, perizinan, dan pengelolaan bangunan tinggi di kota DKI Jakarta masih sangat minimal, karena unsur bencana gempa bumi belum menjadi pertimbangan utama, dan mayoritas bangunan tinggi belum memenuhi standar anti-gempa dengan skala besar. Begitu pula respon masyarakat tentang kesiapan mitigasi bencana sejauh ini masih relatif lemah. ......The research related the earthquake disaster mitigation with urban planning in DKI Jakarta province. This research used qualitative-explorative approach. The unit analysis was high buildings in DKI Jakarta. The result showed that DKI Jakarta's layout towards subduction zone of Sunda Strait/Sunda Megathrust had significant implications for Jakarta. The planning, licensing, and management of high buildings in DKI Jakarta related to the earthquake disaster mitigation was still implemented in a very minimal scale, because the earthquake disaster element had not been put into main consideration, and the majority of high buildings had not fulfilled the anti-earthquake standard in large scale. The citizens response about the readiness of disaster mitigation also stated that so far it?s still relatively low."

"Penelitian ini mengkaji tentang potensi bahaya tsunami di Kecamatan Bayah, Kabupaten Lebak yang berbatasan langsung dengan Samudra Hindia, tempat zona subduksi berada. Kecamatan Bayah berhadapan dengan zona subduksi Megathrust Selat Sunda yang memiliki potensi kekuatan maksimum gempabumi sebesar 8.7 Mw berdasarkan penelitian oleh Pusat Studi Gempa Nasional (PuSGeN). Tujuan dari penelitian ini adalah memodelkan perkiraan tsunami yang terjadi di Kecamatan Bayah berdasarkan potensi gempabumi di zona megathrust segmen Selat Sunda. Metode yang digunakan berupa pemodelan numerik tsunami menggunakan perangkat lunak COMCOT V1.7 dengan skenario gempabumi sebesar 8.7 Mw. Terdapat 2 skenario pemodelan yang dilakukan, skenario 1 menggunakan layer resolusi tinggi dan skenario 2 menggunakan layer dengan resolusi lebih rendah. Berdasarkan dari analisis hasil pemodelan menggunakan COMCOT V1.7 diketahui waktu yang dibutuhkan gelombang tsunami pertama dari episenter menuju Kecamatan Bayah berkisar antara 15 – 19 menit dengan ketinggian gelombang tsunami berkisar dari 6.5 – 18.9 meter mengikuti pola topografi ketinggian wilayah. Rata – rata kedalaman rendaman air yang terjadi berkisar antara 6 – 10 meter (skenario 1) dan 0.5 – 3 meter (skenario 2). Luas area yang tergenang mencapai 951.08 ha (skenario 1) dan 645.78 ha (skenario 2) dengan Jarak inundasi maksimun tsunami sejauh 3.7 km (skenario 1) dan 1.8 km (skenario 2). Potensi bahaya tsunami di Kecamatan Bayah termasuk dalam kategori tinggi mengingat ketinggian tsunami yang terjadi mencapai lebih dari 3 meter dari permukaan.......This research examines the potential danger of tsunamis in Bayah District, Lebak Regency, which borders directly with the Indian Ocean, where the subduction zone is located. Bayah District faces the Megathrust Subduction Zone of the Sunda Strait which has a maximum earthquake strength potential of 8.7 Mw, according to research by the National Earthquake Study Center (PuSGeN). This study aims to model the estimated tsunami in the Bayah District based on the earthquake potential in the megathrust zone of the Sunda segment. The method used is numerical tsunami modeling using COMCOT V1.7 software with an earthquake scenario of 8.7 Mw. There are two modeling scenarios carried out; scenario 1 uses high-resolution layers, and scenario 2 uses layers with lower resolution. Based on the analysis of modeling results using COMCOT V1.7, it is known that the time required for the first tsunami wave from the epicenter to Bayah District ranges from 15 – 19 minutes, with a tsunami wave height ranging from 6.5 – 18.9 meters following the topographic pattern of the region's elevation. The average water immersion depth ranges from 6 – 10 meters (scenario 1) and 0.5 – 3 meters (scenario 2). The area submerged reaches 951.08 ha (scenario 1) and 645.78 ha (scenario 2), with a maximum inundation distance of 3.7 km (scenario 1) and 1.8 km (scenario 2). The potential danger of tsunamis in Bayah District is included in the hazardous category considering that the height of the tsunami that occurs reaches more than 3 meters from the surface."

"This study discusses the evaluation of Hara’s model to estimate seismic moment magnitude (MW) by using teleseismic waveform data, and then presents the development of an extended Hara model. Both models use the maximum amplitude of displacement and epicenter distance, as well as the duration of high-frequency energy radiation, of the vertical component of earthquake P-wave records. Nineteen moderate-magnitude (5.0 £ MW£ 7.0), shallow (depths £ 70 km), Sumatra subduction megathrust earthquake data sets recorded by the KAPI seismograph station (Kappang, South Sulawesi) in 2010 and 2011 were used in this study. The analysis is performed to obtain the maximum amplitude of displacement, epicenter distance, and the duration of high-frequency energy radiation on the first arriving P-wave. The main results show that Hara’s model (2007) overestimates MW to be less than 7.0 compared with that obtained from the Global Centroid Moment Tensor (CMT) catalog. The extended Hara model was developed with the use of the same basic equation, and the resulting coefficients are ? = 0.538792, ? = 0.783840, ? = 0.242616, and ? = 4.929095. The mean and standard deviation of the difference between the extended Hara model and the Global CMT catalog are 0.01 and 0.14, respectively."