Earthquake Damage Level of Gorontalo Area Based on Seismicity and Peak Ground Acceleration

Manyoe, Intan Noviantari; Lantu,; Arif, Samsu; Lahay, Rakhmat Jaya

doi:10.34312/jgeosrev.v1i1.2018

Cited by 12 publications

(9 citation statements)

References 3 publications

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“…The existence of the Celebes Sea subduction has a great influences on seismicity in Gorontalo and reactivation process of faults (Koesnama, 2014). The existence of the Celebes Sea subduction zone, as shown in the seismic record, showed by the existence of a trench along the bottom of the continental slope of the North Arm of Sulawesi (Hamilton, 1973;Manyoe, Arif, & Lahay, 2019).…”

Section: Introductionmentioning

confidence: 93%

Geological Structure Analysis for Potential Landslide Disaster and Mitigation at Tanjung Keramat Area, Gorontalo

Manyoe

Usman

Taslim

et al. 2020

J SIG

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Section: Introductionmentioning

confidence: 93%

Geological Structure Analysis for Potential Landslide Disaster and Mitigation at Tanjung Keramat Area, Gorontalo

Manyoe

Usman

Taslim

et al. 2020

J SIG

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“…Data detail dari studi geomorfologi menjadi penting dalam memahami proses fisik yang terjadi di permukaan bumi dan acuan dalam mitigasi bencana. Daerah penelitian dipilih karena terletak di bagian utara Gorontalo yang rawan bencana (Manyoe et al, 2019). Strategi dalam mewujudkan ketahanan masyarakat terhadap bencana (Koem et al, 2021) sangat penting bila ditunjang oleh data geomorfologi.…”

Section: Pendahuluanunclassified

Karakteristik Geomorfologi Daerah Posso Kabupaten Gorontalo Utara dan Sekitarnya

Harun

Arifin

Manyoe

2022

Jambura Geosci. Rev.

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The landforms in the Gorontalo area are only limited to the physiographic division of Gorontalo. Therefore, this research aims to analyze the geomorphological characteristics of the research area to obtain detailed data that can be used as basic data for the theoretical purposes of Gorontalo geomorphology and disaster applications. The method used in this research is field observation and visual interpretation using satellite imagery, namely GeoEye (GoogleEarth) and Digital Elevation Model. Data analysis was carried out in the form of an analysis of the geomorphological condition of the research area supported by the results of image interpretation—determination of geomorphological units using the Van Zuidam classification. The results showed that the geomorphology of the study area consisted of six geomorphological units: structural hills, volcanic hills, denudational hills, denudational plains, fluvial plains, and marine plains. The morphography and morphometry of the research area are hilly, lowland, and coastal plains generally located at an altitude of 0-393 masl with slopes ranging from flat to extremely steep with a sloping pattern. The morphology of the landform units in the study area starts from the Early Miocene to the Holocene in the form of magmatism, volcanism, and exogenous processes. The presence of geological structures in the form of fractures and faults in geomorphological units and the influence of exogenous processes on landforms can be a reference in mapping the direction of mitigation in the research area, theoretically and practically.

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“…Beberapa penelitian terdahulu membahas mengenai aktivitas seismik yang terjadi di wilayah Gorontalo dan sekitarnya diantaranya (Massinai et al, 2019;Manyoe et al, 2019) serta kondisi tektonik dan keterdapatan struktur geologi (Hall & Wilson, 2000;Milsom, 2001;Hinschberger et al, 2005;Molnar & Dayem, 2010;Advokaat et al, 2017). Penelitian yang dilakukan oleh Manyoe et al, (2019), menganalisis tingkat kerusakan yang diakibatkan oleh gempabumi berdasarkan aktivitas seismik dan percepatan tanah di wilayah Gorontalo. Metode yang digunakan dalam penelitian terdahulu yaitu metode seismisitas berupa pembuatan peta seismisitas menggunakan perangkat lunak Quantum Geographical Information System (QGIS) dan metode Peak Ground Acceleration (PGA) yang menyediakan hubungan antara percepatan tanah (α), magnitudo (M) dan jarak pusat gempa (Δ).…”

Section: Pendahuluanunclassified

Analisis Parameter Gempabumi Dengan Struktur Geologi Di Daerah Asparaga, Gorontalo

Madusila

Manyoe

Male

2021

Jambura Geosci. Rev.

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Gorontalo is an area located in the North Arm of Sulawesi which has a complex geological structure as a result of the submergence of the Sulawesi Sea and East Sangihe so that this area is considered an earthquake-prone area. The existence of the regional structure and the mapping of the earthquake point distribution is interesting to be studied more deeply because it affects seismic activity in the area. The purpose of this study is to analyze earthquakes in the Asparaga area based on their depth and magnitude and to relate them to the geological structures found in the study area. The earthquake data used were obtained from USGS. Satellite image data used is the SRTM satellite image. Earthquake data is mapped to produce depth maps, magnitude maps, and earthquake zoning maps. Lineament data were processed using a rosette diagram. Lineament can reflect the morphology observed on the earth's surface as a result of the activity of geological forces. The results showed that the Asparaga area had shallow earthquake depths and moderate to large magnitudes. The focus of the earthquake was right on the path traversed by the geological structure and its relatively northwest-southeast direction. The geological structure in the research location is the epicenter of the earthquake because it is crossed by regional geological structures.

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Earthquake Damage Level of Gorontalo Area Based on Seismicity and Peak Ground Acceleration

Cited by 12 publications

References 3 publications

Geological Structure Analysis for Potential Landslide Disaster and Mitigation at Tanjung Keramat Area, Gorontalo

Geological Structure Analysis for Potential Landslide Disaster and Mitigation at Tanjung Keramat Area, Gorontalo

Karakteristik Geomorfologi Daerah Posso Kabupaten Gorontalo Utara dan Sekitarnya

Analisis Parameter Gempabumi Dengan Struktur Geologi Di Daerah Asparaga, Gorontalo

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