News

Webinar “Memahami Gempa ‘Outer Rise’ Busur Sunda, dari Sumatra sampai Sumba”

Tue, 18 May 2021
3:02 pm
Information
Share :
Oleh : Admin-Teknik Geofisika   |

An earthquake with a magnitude of 6.7 that occurred on May 14, 2021 was an unusual earthquake, which was centered between the subduction zone and the divergent zone, otherwise known as an intraplate earthquake or outer rise earthquake. The cause of the outer rise earthquake is the tectonic stress that acts on the earthquake source of the outer rise of the extension stress or pull, the earthquake in the outer rise zone has a normal fault source mechanism. The mechanism of the outer rise earthquake source could also be due to a shear fault (transform) as happened in Aceh on April 11, 2012. Twin earthquakes with a strength of 8.5 on the Richter scale and 8.1 on the Richter scale, followed by a small tsunami as high as 1 meter in Nias, 80 cm in Meulaboh, and 6 cm in Sabang.

Earthquake records outside the subduction zone include the 9 June 2016 earthquake south of Bali with a magnitude of M6.0, 15 July 2016 earthquake in the south of West Java M5.1 which shook the southern coast of West Java, 23 July 2016, the Bengkulu and Lampung earthquake with a M 5 magnitude, 4 that rocked the coasts of Bengkulu to Lampung and March 19, 2020, the southern Bali earthquake with a magnitude of M6.5 was felt throughout Bali and Lombok.

The magnitude and mechanism of the outer rise earthquake source can trigger a tsunami, this has been recorded in Indonesia in various regions, including: (1) On 11 September 1921 an earthquake in southern Java measuring M7.5 occurred which triggered a tsunami, (2) On 19 August 1977 earthquake south of Sumbawa measuring M8.3 triggered a destructive tsunami south of Sumbawa.

Geophysical Engineering ITS in collaboration with  Masyarakat Geologi Tata Lingkungan (Mageti) presents WEBINAR “Memahami Gempa ‘Outer Rise’ Busur Sunda, dari Sumatra sampai Sumba”, with invited resource speakers:

  • Supartoyo (Koordinator Mitigasi Gempa Bumi dan Tsunami, PB Madya di PVMBG)
  • ‪Awang Harun Satyana (Independent Geologist)

As a respondent:

  • Daryono (Kepala Bidang Mitigasi Gempa Bumi dan Tsunami BMKG)

and the moderator:

  • Amien Widodo (Lecturer of Geophysical Engineering ITS).

This event will be held virtually on:

The presentation of resource speakers could be accessed through the following link:

  1. Supartoyo (Koordinator Mitigasi Gempa Bumi dan Tsunami, PB Madya di PVMBG)
  2. Awang Harun Satyana (Independent Geologist)

Let’s join the event and get the e-certificate

Latest News

  • Webinar “Pengenalan Museum Trowulan dan Situs di sekitarnya”

    Museum Goes To Campus Banyak cara dan upaya untuk meningkatkan kunjungan museum dapat dilakukan antara lain menggandeng Perguruan Tinggi

    28 Jun 2022
  • Selamat kepada Mahasiswa Teknik Geofisika ITS yang Berprestasi di Ajang PROTECH 2022 dan PETROLIDA 2022

    Muhammad Zayem Ghifari Rizal (Zayem), dan Muhammad Ilhan Baihaqi (Ilhan),  mengukir prestasi dalam kompetisi internasional. Zayem, mahasiswa Teknik Geofisika

    28 Jun 2022
  • Hey Calon Pejuang PTN, Yuk Ikuti GeoOlympic Teknik Geofisika ITS

    Halo Siswa/i SMA/sederajat Diseluruh Indonesia Ada kabar terbaru nih, Event GeoOlympic Teknik Geofisika

    21 Jun 2022