RELOKASI GEMPA BUMI SWARM DI PESAWARAN-LAMPUNG, JANUARI 2021

Authors

  • Izaina Nurfitriana Program Studi Teknik Geofisika, Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera, Lampung Selatan, 35365, Indonesia
  • Adhi Wibowo Stasiun Geofisika Kelas III Lampung Utara, Badan Meteorologi Klimatologi dan Geofisika (BMKG), Lampung Utara, 34519, Indonesia
  • Rudianto Rudianto Stasiun Geofisika Kelas III Lampung Utara, Badan Meteorologi Klimatologi dan Geofisika (BMKG), Lampung Utara, 34519, Indonesia

DOI:

https://doi.org/10.20956/geocelebes.v5i1.13328

Keywords:

Pesawaran, relokasi hiposenter, Sesar Menanga, swarm

Abstract

Pesawaran, Lampung telah diguncang rentetan gempa bumi magnitudo rendah pada bulan Januari 2021. Gempa bumi tersebut tidak disertai dengan gempa utama dengan magnitudo besar sehingga dapat disebut dengan gempa swarm. Relokasi hiposenter telah dilakukan dengan mengunakan data dari jaringan stasiun BMKG untuk mengetahui sumber dari gempa swarm tersebut. Metode double-difference digunakan dan didapatkan hasil relokasi 19 dari 22 gempa swarm yang terjadi. Distribusi kedalaman hiposenter berkisar pada kedalaman 1,5-4,5 km sehingga dapat disebut dengan gempa kerak dangkal. Berdasarkan sayatan melintang terhadap kedalaman teramati bahwa sebaran gempa memiliki kemiringan ke arah Timur Laut. Lokasi gempa yang presisi juga menunjukan bahwa adanya deliniasi dan tepat berada di atas terduga Sesar Menanga. Berdasarkan analisis hasil relokasi hiposenter dapat disimpulkan bahwa gempa swarm Pesawaran disebabkan oleh aktivitas Sesar Menanga.

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Published

2021-04-30

How to Cite

Nurfitriana, I., Wibowo, A., & Rudianto, R. (2021). RELOKASI GEMPA BUMI SWARM DI PESAWARAN-LAMPUNG, JANUARI 2021. JURNAL GEOCELEBES, 5(1), 91-101. https://doi.org/10.20956/geocelebes.v5i1.13328

Issue

Vol. 5 No. 1: April 2021

Section

Articles

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