Studi Awal Penyusunan Skala Intensitas Gempabumi Badan Meteorologi Klimatologi Dan Geofisika

Muzli, Muzli; Masturyono, Masturyono; Murjaya, Jaya; Riyadi, Mochammad

doi:10.31172/jmg.v17i2.440

Cited by 4 publications

(3 citation statements)

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“…Decision-making for action or rapid response requires accurate and easy-to-understand information related to disaster events, especially destructive earthquakes, One of the information is the potential damage that will be caused. Information or potential impacts caused by strong earthquakes are expressed in the earthquake intensity scale [12], Based on the earthquake history obtained from the BMKG website (http://repogempa.bmkg.go.id/repo_n ew/), the earthquake that occurred around Nagari Kajai there were 6 shocks within 1 month in February 2022 after the main shock, with a magnitude range of 3 -6.2 SR. Scientific studies that have been conducted in various countries show that subduction areas with areas without earthquakes or rare earthquakes known as low seismicity, have the potential for destructive earthquakes, because it is estimated that the accumulation of stress (strain) due to the subduction process that continues in the low seismicity area has experienced a maximum limit [13].…”

Section: Seismic Intensity Mapmentioning

confidence: 99%

Microzonation mapping of building damage after earthquake disaster in Nagari Kajai West Pasaman district

Fauziah,

yulfa

2024

Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet

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This research aims to map the level of potential and analyze and map the microzonation of building damage after an earthquake disaster in Nagari Kajai, West Pasaman Regency. The method used in mapping the potential level of earthquake hazard is scoring analysis, while in modeling the microzonation map of building damage is done by buffer method and matching the zone of danger level, then validating the model with field survey method which is integrated into the results of on-screen digitization of high-resolution satellite image interpretation of each distribution of damaged buildings at the research location.The results of this study are in the form of a map model of the potential level of earthquake disaster hazard which is divided into three zones, namely unstable areas with a score of 46-60, less stable areas have a score of 31-45, and stable areas against earthquakes have a score of 15-30. The results of the analysis of the microzoning map of post-earthquake building damage in Nagari Kajai, West Pasaman Regency obtained a microzoning area, in the unstable class covering 3583.63 ha, located in the jorong rimbo batu, kampung alang, pasa lamo area. In the less stable microzonation class covering an area of 6349.78 ha, located in the limpato jorong area, most of the lubuak sariak jorong area, and part of the tanjuang beruang jorong area, and in the stable class has an area of 1251.04 ha, located in the mudiak simpang jorong area, part of the timbo abu jorong, limpato, and some of the lubuak sariak jorong area.

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Section: Seismic Intensity Mapmentioning

confidence: 99%

Microzonation mapping of building damage after earthquake disaster in Nagari Kajai West Pasaman district

Fauziah,

yulfa

2024

Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet

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“…On scale VI, it may result in minor damage to non-structural parts of the building, such as hairline cracks on the walls and some roof tiles shifting and falling. Meanwhile, on Scale VII, it is likely to cause many building structures to experience light to moderate damage, including numerous cracks in building walls, broken glass, and falling roof tiles [18].…”

Section: Estimate the Number Of Population And Structures Affectedmentioning

confidence: 99%

Hazard analysis of earthquake in Pleret, Bantul Regency, Yogyakarta Special Region based on microtremor data

Koesuma,

Shidqi,

Sunardi

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Pleret, one of the sub-districts in Bantul Regency, Yogyakarta, is prone to earthquakes. This area is traversed by an active fault system known as the Opak fault, with a maximum magnitude of 6.6 Mw. The local geological conditions can be determined based on microtremor data from 43 measurement points. The purpose of this research is to understand the dynamic characteristics of the local geological conditions, including the dominant frequency (f0), shear wave velocity (Vs30), peak ground acceleration (PGA), and to map the earthquake impacts on the population and structures. Microtremor measurements were conducted for approximately 20 minutes, revealing a dominant frequency range of 0.61-10.85 Hz. The HVSR curve inversion revealed the Vs30 range 213 to 826 m/s distribution. Peak Ground Acceleration (PGA) values varied from 0.16 to 0.26 g. Using InaSAFE software, the estimated affected population reached 49,052 people, with over 23,176 structures affected. The results of this mapping are expected to be utilized as a step towards enhancing disaster preparedness.

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“…Pengelompokan data awal berupa data titik gempa dengan satuan Skala Richter digunakan untuk mengetahui sebaran titik gempa yang memiliki nilai kerusakan tinggi sedangkan untuk pengelompokan risiko percepatan gerakan tanah mengunakan skala intensitas gempabumi BMKG pada Tabel 1. Skala ini merupakan penyederhanaan dari skala intensitas MMI (Muzli et al, 2017). Berikut adalah Gambar 3 diagram alir penelitian menunjukan alur langkah penelitian ini.…”

Section: Metodeunclassified

Pemetaan Zona Resiko Gempabumi Berdasarkan Peak Ground Acceleration Terhadap Energi Dan Sumberdaya Mineral Di Provinsi Maluku Utara

Saifuddin¹,

Pertiwi²

2021

SNG

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Maluku Utara merupakan salah satu provinsi di Indonesia yang tercatat sebagai wilayah yang sering terjadi gempa karena terletak di pertemuan Lempeng Eurasia, Lempeng Pasifik, Lempeng Mikro Halmahera, dan Lempeng Oceanic Laut Maluku. Selain itu Maluku Utara juga tercatat sebagai penyumbang besar Penerimaan Negara Bukan Pajak (PNBP) di sektor pertambangan. Pemetaan zona resiko bencana gempabumi berdasarkan intensitas keaktifan gempa dapat digunakan sebagai inovasi teknologi guna mengetahui spesifikasi daerah yang memiliki resiko tinggi karena dalam penganalisisan ini memperhitungkan percepatan getaran tanah maksimum akibat gempa bumi yang diperoleh berdasarkan data gempabumi yang terjadi pada kurun waktu 2000-2020 dengan memperhatikan besarnya Magnitudo dan jarak Hiposenternya. Hasil penganalisisan Peak Ground Acceleration (PGA) ditampilkan dalam bentuk peta dan juga ditumpang susunkan dengan peta wilayah izin usaha tambang yang dikeluarkan oleh Kementrian Energi dan Sumberdaya Mineral (ESDM) sehingga hasil akhir diperoleh zona wilayah izin tamabang berdasarkan tingkat resiko bahaya gempabumi.

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Studi Awal Penyusunan Skala Intensitas Gempabumi Badan Meteorologi Klimatologi Dan Geofisika

Cited by 4 publications

References 0 publications

Microzonation mapping of building damage after earthquake disaster in Nagari Kajai West Pasaman district

Microzonation mapping of building damage after earthquake disaster in Nagari Kajai West Pasaman district

Hazard analysis of earthquake in Pleret, Bantul Regency, Yogyakarta Special Region based on microtremor data

Pemetaan Zona Resiko Gempabumi Berdasarkan Peak Ground Acceleration Terhadap Energi Dan Sumberdaya Mineral Di Provinsi Maluku Utara

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