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Simeulue Earthquake Activity Analysis Using the MLE Method

Indonesian Journal of Geography · Vol. 57 No. 1 (2025) · hlm. 42–51

DOI
10.22146/ijg.91332
ISSN
2354-9114, 0024-9521
Terbit
2025-04-27
Penerbit
Faculty of Geography, Universitas Gadjah Mada
Bahasa
ind
Lisensi
creativecommons.org/licenses/by-nc/4.0

Abstrak

The territory of Indonesia is prone to a high level of tectonic earthquake vulnerability including In Simeulue Regency, one of the regions of Aceh Province. Therefore, this study aimed to analyze level of tectonic earthquake activity in Simeulue Regency and its surroundings divided into four Sub Regions (I, II, III, and IV). The data used spanned 1940-2020 and were sourced from the ISC with the criteria of the depth being <60km and a magnitude of 3Mw. The seismic features were elucidated through descriptive statistics, while the determination of 'a' and 'b' values for individual Sub Region was accomplished by using the maximum likelihood estimation (MLE) method. The results showed that the highest distribution of earthquakes was at a depth of 15-44.9 km and magnitude at intervals of 3.0-4.9 Mw, specifically in Sub Region III. The largest Mc value was found in Sub Region I, while Sub Region III had high seismic activity and rock heterogeneity. In addition, this area had a large seismicity index and the shortest return period at intervals of magnitude 3.0≤M<4.0. Sub Region I on the other hand had a longer seismicity index at intervals of magnitudes 4.0≤M<5.0,5.0≤M<6.0, and M≥6.0.Received:2023-12-02 Revised:2024-01-11 Accepted:2024-12-07 Published:2025-04-27 Play This Podcast Article

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  • Universitas Pattimura
  • Bandung Institute of Technology
  • Meteorological, Climatological, And Geophysical Agency
  • Satya Wacana Christian University
  • Indonesian National Institute of Aeronautics and Space
  • International Research Center for Space and Planetary Environmental Science, Kyushu University
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Rekan penulisOrganisasiArtikel bersama
Mozart Winston TalakuaUniversitas Pattimura3
Venn Yan Ishak IlwaruUniversitas Pattimura2
Yopi Andry LesnussaUniversitas Pattimura2
Gunawan IbrahimBandung Institute of Technology2
RUDY WOLTER MATAKUPANUniversitas Pattimura1
Monalisa E. RijolyUniversitas Pattimura1
Elvinus R. PersulessyUniversitas Pattimura1
Gresyea L. MarcusUniversitas Pattimura1
Linanda KaileyUniversitas Pattimura1
Dorteus L. RahakbauwUniversitas Pattimura1
Lexy Janzen SinayUniversitas Pattimura1
Mitra TomasoaUniversitas Pattimura1
Francis Yunito RumlawangUniversitas Pattimura1
Meilin Imelda TilukayUniversitas Pattimura1
Marlon Stivo Noya Van DelsenUniversitas Pattimura1
ELISABETH ROSSEMARY YUNITA SAHULATAUniversitas Pattimura1
Royke Yohanes WarellaUniversitas Pattimura1
Udjianna Sekteria PasaribuBandung Institute of Technology1
Yuli Sri AfriantiBandung Institute of Technology1
Fadhil Hanif SulaimanBandung Institute of Technology1
Grace AngeliaBandung Institute of Technology1
Adi SetiawanSatya Wacana Christian University1
Indra GunawanBandung Institute of Technology1
Suaidi AhadiMeteorological, Climatological, And Geophysical Agency1
Muzli MuzliMeteorological, Climatological, And Geophysical Agency1
Sarmoko SarosoIndonesian National Institute of Aeronautics and Space1
K. YumotoInternational Research Center for Space and Planetary Environmental Science, Kyushu University1
Sugeng PribadiMeteorological, Climatological, And Geophysical Agency1
Afnimar AfnimarBandung Institute of Technology1

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Sumber metadata: OAI-PMH (metadata jurnal) http://jurnal.ugm.ac.id/ijg/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="id-ID">Simeulue Earthquake Activity Analysis Using the MLE Method</dc:title>
	<dc:creator>Wattimanela, Henry Junus</dc:creator>
	<dc:creator>Puspito, Nanang Tyasbudi</dc:creator>
	<dc:creator>Batkunde, Harmanus</dc:creator>
	<dc:subject xml:lang="id-ID">Geograpgy; Statistics; Geophysics</dc:subject>
	<dc:subject xml:lang="id-ID">MLE method; return period; seismicity index; Simeulue Regency; tectonic earthquake</dc:subject>
	<dc:subject xml:lang="id-ID">Statistics; Geophysics</dc:subject>
	<dc:description xml:lang="id-ID">The territory of Indonesia is prone to a high level of tectonic earthquake vulnerability including In Simeulue Regency, one of the regions of Aceh Province. Therefore, this study aimed to analyze level of tectonic earthquake activity in Simeulue Regency and its surroundings divided into four Sub Regions (I, II, III, and IV). The data used spanned 1940-2020 and were sourced from the ISC with the criteria of the depth being &lt;60km and a magnitude of 3Mw. The seismic features were elucidated through descriptive statistics, while the determination of 'a' and 'b' values for individual Sub Region was accomplished by using the maximum likelihood estimation (MLE) method. The results showed that the highest distribution of earthquakes was at a depth of 15-44.9 km and magnitude at intervals of 3.0-4.9 Mw, specifically in Sub Region III. The largest Mc value was found in Sub Region I, while Sub Region III had high seismic activity and rock heterogeneity. In addition, this area had a large seismicity index and the shortest return period at intervals of magnitude 3.0≤M&lt;4.0. Sub Region I on the other hand had a longer seismicity index at intervals of magnitudes 4.0≤M&lt;5.0,5.0≤M&lt;6.0, and M≥6.0.Received:2023-12-02  Revised:2024-01-11 Accepted:2024-12-07 Published:2025-04-27  Play This Podcast Article </dc:description>
	<dc:publisher xml:lang="en-US">Faculty of Geography, Universitas Gadjah Mada</dc:publisher>
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	<dc:date>2025-04-27</dc:date>
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	<dc:type xml:lang="en-US">Peer-reviewed Article</dc:type>
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	<dc:identifier>https://journal.ugm.ac.id/ijg/article/view/91332</dc:identifier>
	<dc:identifier>10.22146/ijg.91332</dc:identifier>
	<dc:source xml:lang="en-US">Indonesian Journal of Geography; Vol 57, No 1 (2025): Indonesian Journal of Geography; 42-51</dc:source>
	<dc:source>2354-9114</dc:source>
	<dc:source>0024-9521</dc:source>
	<dc:language>ind</dc:language>
	<dc:relation>https://journal.ugm.ac.id/ijg/article/view/91332/pdf</dc:relation>
	<dc:relation>https://journal.ugm.ac.id/ijg/article/downloadSuppFile/91332/30276</dc:relation>
	<dc:relation>https://journal.ugm.ac.id/ijg/article/downloadSuppFile/91332/30277</dc:relation>
	<dc:relation>https://journal.ugm.ac.id/ijg/article/downloadSuppFile/91332/30278</dc:relation>
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	<dc:coverage xml:lang="id-ID"></dc:coverage>
	<dc:coverage xml:lang="id-ID"></dc:coverage>
	<dc:rights xml:lang="en-US">Copyright (c) 2025 Henry Junus Wattimanela, Nanang Tyasbudi Puspito, Harmanus Batkunde</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc/4.0</dc:rights>
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