Hasil Pencarian  ::  Simpan CSV :: Kembali

"The soil liquefaction potential has been evaluated for the Ariana Region because of its important socio economic interest and its location...."

"Todevelop seismic design criteria for buildings, seismic hazard analysis is required to estimate the ground motionintensity with criteria such as peak groundacceleration (PGA). The seismic hazard can be analyzed by using two approaches: deterministic seismic hazard analysis (DSHA) andprobabilistic seismic hazard analysis (PSHA). In these two approaches, theseismic hazard is evaluated from past earthquake events and active faults data. In Thailand, seismic hazard is classified in the low lying regions; however, in recently years,earthquakes have occurred frequently in the North of Thailand. Toprevent and reduce damage due to earthquakes in the future, determinationof seismic hazard is needed. Thisresearch proposes a deterministic seismic hazardmap evaluated from nineteenactive faults affectingThailand. Two types of active faults are considered: first, an active fault in a subduction zone and second, a crustal fault. The seismic hazard is evaluated by using a groundmotion prediction equation (GMPEs). Four GMPEs are weighted equally forseismic crustal fault, and two GMPEs are weighted equally fora seismic subduction zone. The hypocentral distance isused to evaluate the seismic hazard for all ground motion prediction equations.The Northern part and the Western part of Thailand are high seismic hazardregions, because there are active faults with the large possibility of earthquakes of a maximum magnitude. The seismichazards in the North, West and Northeast of Thailand are about 0.60 g.The seismic hazard in Bangkok is about 0.25 g due to the Three Pagoda fault and Sri Sawat fault. The seismic hazard in the South of Thailand is about 0.40 g."

"To develop seismic design criteria for buildings, seismic hazard analysis is required to estimate the ground motion intensity with criteria such as peak ground acceleration (PGA). The seismic hazard can be analyzed by using two approaches: deterministic seismic hazard analysis (DSHA) and probabilistic seismic hazard analysis (PSHA). In these two approaches, the seismic hazard is evaluated from past earthquake events and active faults data. In Thailand, seismic hazard is classified in the low lying regions; however, in recently years, earthquakes have occurred frequently in the North of Thailand. To prevent and reduce damage due to earthquakes in the future, determination of seismic hazard is needed. This research proposes a deterministic seismic hazard map evaluated from nineteen active faults affecting Thailand. Two types of active faults are considered: first, an active fault in a subduction zone and second, a crustal fault. The seismic hazard is evaluated by using a ground motion prediction equation (GMPEs). Four GMPEs are weighted equally for seismic crustal fault, and two GMPEs are weighted equally for a seismic subduction zone. The hypocentral distance is used to evaluate the seismic hazard for all ground motion prediction equations. The Northern part and the Western part of Thailand are high seismic hazard regions, because there are active faults with the large possibility of earthquakes of a maximum magnitude. The seismic hazards in the North, West and Northeast of Thailand are about 0.60 g. The seismic hazard in Bangkok is about 0.25 g due to the Three Pagoda fault and Sri Sawat fault. The seismic hazard in the South of Thailand is about 0.40 g."

"Seismic hazard map in Indonesian bedrock was part of the Indonesian standard describeng seismic hazard for Indonesia territory and used as one of significant load in structure design. Recent earthquake with big intensity surely can effect the seismic hazard in Indonesia. Therefore, seismic hazard map in Sumatera, Java-Sumba and Kalimantan was developed as part of seismic hazard analysis in Indonesia using the latest data, 3D seismic source model and PSHA-07-USGS software and publicized in this paper. The seismic hazard analysis was refer to Unified Building Code 97 and represent the 475 year return period seismic hazard map in Sumatera, Java-Sumba and Kalimantan. The result showed that maximum PGA for Sumatera ranges between 0.02-0.65 g, Java- Sumba 0.02-0.65 g and Kalimantan 0.005 - 0.2 g. All result showed a larger value than seismic hazard map in the than Indonesian Standar (SNI 03-1726-2002). Comparison with the other studies showed a comparative result only in Sumatera, while in Java-Sumba and Kalimantan shown a disagree result. Some factors can affect the result, such as seismic data, seismic source model and attenuation function selection."

"ABSTRACTAnalisis hazard gempa untuk wilayah Indonesia sudah disusun dalam peraturan gempa Indonesia (SNI-1726-2012) untuk Peak Ground Acceleration (PGA) dan spektrum respons dibatuan dasar, sedangkan aplikasiuntuk disai struktur harus dihitung dipermukaan dengan mempertimbangkan efek tanah lokal. Analisis respon spesifik situs pada empat lokasi yang telah diketahui kondisi tanahnyaberdasarkan hasil uji pengeboran dan standard penetration test (SPT) yaitu di serang, sukabumi, cilacap, dan wonogiri yaitu lokasi stasiun seismografmilik BAdan Meteorologi Klimatologi dan Geofisika (BMKG). Hasil analisis pada seluruh lokasi tersebut diperoleh spektrum respons dipermukaan pada periode 1,0 detik terjadi amplikasi, sedangkan pada PGA dan spektrum respons 0,2 detik terjadi deamplikasi. Bila deibandingkan dengan ASCE-07-10 untuk jenis tanah sedang (SD) memperlihatkan nilai nilai amplifikasi hasil penelitian yang lebih rendah. Hal ini tentunya akan menjadi bahan kajian dan evaluasi lebih lanjut untuk kebutuhan praktis."

"This book gathers 23 papers by top experts from 11 countries, presented at the 3rd Houston International Forum: Concrete Structures in Earthquake. Designing infrastructures to resist earthquakes has always been the focus and mission of scientists and engineers located in tectonically active regions, especially around the Pacific Rim of Fire including China, Japan, and the USA. The pace of research and innovation has accelerated in the past three decades, reflecting the need to mitigate the risk of severe damage to interconnected infrastructures, and to facilitate the incorporation of high-speed computers and the internet. The respective papers focus on the design and analysis of concrete structures subjected to earthquakes, advance the state of knowledge in disaster mitigation, and address the safety of infrastructures in general."

"Di era dimana krisis iklim semakin menjadi ancaman nyata bagi dunia, Pembangkit Listrik Tenaga Nuklir semakin menarik perhatian untuk melakukan transisi energi menuju energi yang lebih bersih demi mengurangi emisi karbon. Namun sebagai bangunan yang memiliki risiko tinggi, pembangunan Pembangkit Listrik Tenaga Nuklir (PLTN) perlu dirancang dengan baik dengan mempertimbangkan aspek kegempaan, salah satunya peak ground acceleration sebagai parameter. Penelitian ini bertujuan menganalisis kondisi peak ground acceleration di pulau Bangka sebagai salah satu kandidat lokasi PLTN di Indonesia dengan menggunakan metode probabilistic seismic hazard analysis untuk dapat mengkuantifikasi probabilitas terlampauinya masing-masing tingkatan peak ground acceleration. Untuk melakukan prediksi nilai peak ground acceleration, dilakukan identifikasi sumber-sumber gempa yang berpengaruh bagi pulau Bangka dilakukan pada penelitian ini beserta pemodelan seismisitasnya. Hasil penelitian menunjukkan Pulau Bangka memiliki probabilitas terjadinya peak ground acceleration yang setara atau lebih dari 0.1 hingga 0.125 g sebesar 1% dalam 100 tahun yang menunjukkan bahwa Pulau Bangka relatif aman dan memenuhi kriteria untuk lokasi Pembangkit Listrik Tenaga Nuklir.

---

In an era where climate change become real threat for the world, Nuclear Power Plant (NPP) getting more attention to do energy transition toward a cleaner energy in order to reduce carbon emission. But has a high risk building and facility, Nuclear Power Plant need to be specifically designed by considerating seismisicity aspect with peak ground acceleration as one of its parameter. This research aims to analyze the peak ground acceleration condition in Bangka Island as one of the Nuclear Power Plant location candidate in Indonesia using probabilistic seismic hazard analysis method in order to quantify exceedance probability of certain level of peak ground acceleration. In order to predict the peak ground acceleration, seismic source that affecting Bangka Island was identified on this research, including its seismicity model. This research results show that Bangka Island has 1% probability in a hundred year that a 0.1-0.125 g peak ground acceleration was felt on this island and that was considered relatively safe and pass the peak ground acceleration criteria for Nuclear Power Plant location candidate."

"This book offers a comprehensive introduction to the theory of structural dynamics, highlighting practical issues and illustrating applications with a large number of worked out examples. In the spirit of learning by doing it encourages readers to apply immediately these methods by means of the software provided, allowing them to become familiar with the broad field of structural dynamics in the process.The book is primarily focused on practical applications. Earthquake resistant design is presented in a holistic manner, discussing both the underlying geophysical concepts and the latest engineering design methods and illustrated by fully worked out examples based on the newest structural codes. The spectral characteristics of turbulent wind processes and the main analysis methods in the field of structural oscillations due to wind gusts and vortex shedding are also discussed and applications illustrated by realistic examples of slender chimney structures. The user‐friendly software employed is downloadable and can be readily used by readers to tackle their own problems."

"Kota Surabaya merupakan salah satu kota besar di Indonesia yang wilayahnya dilewati oleh dua segmen patahan dari Sesar Kendeng, yaitu Patahan Waru dan Patahan Surabaya. Keduanya memiliki laju pergerakan sebesar 0,05 mm/tahun dan berpotensi terjadi gempabumi berkekuatan besar di masa mendatang. Selain itu, Wilayah Surabaya berdekatan dengan Megathrust East Java di Selatan Pulau Jawa. Berdasarkan riwayat kegempaan, Wilayah Surabaya belum pernah menjadi titik episenter gempabumi dan hanya ikut terguncang akibat gempabumi yang terjadi disekitarnya. Penelitian ini bertujuan untuk menganalisis dan memetakan besaran percepatan tanah di Surabaya akibat gempabumi. Metode penelitian yang digunakan ialah metode Probabilistic Seismic Hazard Analysis (PSHA) dengan bantuan perangkat lunak R-CRISIS. Sumber gempabumi yang diolah berada pada radius 500 Km dari Surabaya dengan kedalaman <300 Km dan dikumpulkan dari berbagai katalog seperti katalog BMKG, katalog PuSGeN, katalog USGS, dan katalog ISC dari tahun 1900-Januari 2023. Hasil pengolahan menunjukkan bahwa nilai percepatan tanah yang diperoleh pada PoE 2% dalam 50 tahun (periode ulang 2.475 tahun) saat T=0s sebesar 0,314-0,538 g, T=0,2s sebesar 0,759-1,308 g, dan T=1s sebesar 0,192 – 0,321 g. Berikutnya, nilai percepatan tanah pada PoE 5% dalam 50 tahun (periode ulang 975 tahun) saat T=0s sebesar 0,236-0,391 g, T=0,2s sebesar 0,562 – 0,903 g, dan T=1s sebesar 0,134-0,211 g. Selanjutnya, nilai percepatan tanah pada PoE 10% dalam 50 tahun (periode ulang 475 tahun) saat T=0s sebesar 0,180-0,289 g, T=0,2s sebesar 0,417-0,678 g, dan T=1s sebesar 0,101-0,147 g. Berdasarkan hasil analisis, Wilayah Surabaya Barat mengalami respon percepatan tanah paling tinggi. Hal ini bersesuaian dengan tektonik Surabaya Barat yang dilewati oleh Patahan Surabaya dan Patahan Waru, sehingga nilai percepatan tanah yang tinggi diakibatkan oleh sumber gempabumi fault (patahan). Setelah dikonversi menjadi gal, potensi kerusakan yang ditimbulkan berdasarkan nilai percepatan tanah yang diperoleh sebesar VI-XII MMI (99,05-1.282,71 gal).

---

Surabaya City is one of the major cities in Indonesia that is passed by two fault segments of the Kendeng Fault, namely the Waru Fault and the Surabaya Fault. Both have a movement rate of 0,05 mm/year and potentially have a large-power earthquake in the future. In addition, the Surabaya Region is adjacent to the East Java Megathrust in the South of Java Island. Based on the history of seismicity, the Surabaya Region has never been the epicenter of an earthquake and has only been shaken by earthquakes that occurred around it. This study aims to analyzing and mapping the amount of ground acceleration in Surabaya due to earthquakes. The research method used is the Probabilistic Seismic Hazard Analysis (PSHA) method using R-CRISIS software. The processed earthquake source is within 500 Km from Surabaya with a depth of <300 Km and is collected from various catalogs such as the BMKG catalog, the PuSGeN catalog, the USGS catalog, and the ISC catalog from 1900 to January 2023. The results of processing show that the ground acceleration values obtained at PoE 2% in 50 years (return period of 2.475 years) when T=0s is 0,314 – 0,538 g, T=0,2s is 0,759-1,308 g, and T=1s is 0,192-0,321 g. Subsequently, the ground acceleration values at PoE 5% in 50 years (return period of 975 years) when T=0s is 0,236-0,391 g, T=0,2s is 0,562-0,903 g, and T=1s is 0,134-0,211 g. Furthermore, the ground acceleration values at PoE were 10% in 50 years (return period of 475 years) when T=0s is 0,180-0,289 g, T=0,2s is 0,417-0,678 g, and T=1s is 0,101-0,147 g. Based on the results of the analysis, the West Surabaya Region experienced the highest ground acceleration response. This corresponds to the tectonics of West Surabaya which is passed by the Surabaya Fault and the Waru Fault, so that the high value of ground acceleration is due to the fault earthquake source. After being converted into gal, the potential damage caused based on the ground acceleration value obtained is VI-XII MMI (99,05 – 1.282,71 gal)."