Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping

We focused our study to characterize the geometry and activity of Gorontalo fault. We analysed reviewed the ISC seismic catalogue and the BMKG relocated earthquake events available for the time period of 1960 to 2021, located along the expected location of this fault. In addition, we analysed contin...

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Autores principales:	Efendi Hasan Arif, Marliyani Gayatri Indah, Pramumijoyo Subagyo
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/f05a257ff5d440278da9e1c1c98a7030
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spelling	oai:doaj.org-article:f05a257ff5d440278da9e1c1c98a70302021-12-02T17:11:56ZRecent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping2267-124210.1051/e3sconf/202132501013https://doaj.org/article/f05a257ff5d440278da9e1c1c98a70302021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/101/e3sconf_icst2021_01013.pdfhttps://doaj.org/toc/2267-1242We focused our study to characterize the geometry and activity of Gorontalo fault. We analysed reviewed the ISC seismic catalogue and the BMKG relocated earthquake events available for the time period of 1960 to 2021, located along the expected location of this fault. In addition, we analysed continuous record from local seismic observatory available for the same period. Further, we mapped the lineaments using 8.3-m resolution DEMNAS data. Tens on shallow earthquakes occurred in the vicinity of this fault with a range magnitude of M 2 to 3. Our lineament analysis however does not reveal distinctive pattern that may indicate the fault manifestation at the surface. The NW-SE trending lineaments are coincidence with the mapped trace of Gorontalo Fault. The weak surface manifestation of the fault scarp may be related to the tropical climatic condition of the area which may obliterate the faulting topography. However, we observed alignment of the seismicity distribution with the mapped NW-SE lineament, indicating that the lineament is likely representing active fault and these earthquakes are associated with faulting along this fault. Our study provide indication that the Gorontalo Fault is active and further study is necessary to investigate subsurface geometry and mitigate its seismic hazards.Efendi Hasan ArifMarliyani Gayatri IndahPramumijoyo SubagyoEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 325, p 01013 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Efendi Hasan Arif Marliyani Gayatri Indah Pramumijoyo Subagyo Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
description	We focused our study to characterize the geometry and activity of Gorontalo fault. We analysed reviewed the ISC seismic catalogue and the BMKG relocated earthquake events available for the time period of 1960 to 2021, located along the expected location of this fault. In addition, we analysed continuous record from local seismic observatory available for the same period. Further, we mapped the lineaments using 8.3-m resolution DEMNAS data. Tens on shallow earthquakes occurred in the vicinity of this fault with a range magnitude of M 2 to 3. Our lineament analysis however does not reveal distinctive pattern that may indicate the fault manifestation at the surface. The NW-SE trending lineaments are coincidence with the mapped trace of Gorontalo Fault. The weak surface manifestation of the fault scarp may be related to the tropical climatic condition of the area which may obliterate the faulting topography. However, we observed alignment of the seismicity distribution with the mapped NW-SE lineament, indicating that the lineament is likely representing active fault and these earthquakes are associated with faulting along this fault. Our study provide indication that the Gorontalo Fault is active and further study is necessary to investigate subsurface geometry and mitigate its seismic hazards.
format	article
author	Efendi Hasan Arif Marliyani Gayatri Indah Pramumijoyo Subagyo
author_facet	Efendi Hasan Arif Marliyani Gayatri Indah Pramumijoyo Subagyo
author_sort	Efendi Hasan Arif
title	Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
title_short	Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
title_full	Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
title_fullStr	Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
title_full_unstemmed	Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping
title_sort	recent faulting along gorontalo fault based on seismicity data analysis and lineament mapping
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/f05a257ff5d440278da9e1c1c98a7030
work_keys_str_mv	AT efendihasanarif recentfaultingalonggorontalofaultbasedonseismicitydataanalysisandlineamentmapping AT marliyanigayatriindah recentfaultingalonggorontalofaultbasedonseismicitydataanalysisandlineamentmapping AT pramumijoyosubagyo recentfaultingalonggorontalofaultbasedonseismicitydataanalysisandlineamentmapping
_version_	1718381471885950976

Recent faulting along Gorontalo fault based on seismicity data analysis and lineament mapping

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