Direction of magma migration in Sinabung volcano based on February 2017 hypocenter distribution

Ramayanti, Suci; Srigutomo, Wahyu; Djaja, I Gede Putu Fadjar Soerya; Pratomo, Prihandhanu M.; Triastuty, Hetty

doi:10.1063/5.0037607

Cited by 2 publications

(5 citation statements)

References 13 publications

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“…In carrying out the hypocenter relocation process, many researchers have used and obtained maximum results, both in Central Sulawesi and Indonesia. This method can be used in earthquake relocation due to faults and subduction zones [15][16][17][18], for relocation of small earthquakes caused by volcanic activity [19,20], and due to vibration at mining sites [21,22].…”

Section: Methodsmentioning

confidence: 99%

Hypocenter Relocation of Local Earthquake using Double Difference Method in Central Sulawesi from BMKG Network Data: Time Periods of July 26 - August 18, 2021

Jayadi

Janat

Santosa

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Last July 2021, a destructive earthquake occurred in the northern Ampana area, Central Sulawesi, with the epicenter at sea. We investigated the earthquake and found 101 hypocenter points with a magnitude of 2-6 Mw from 26 July to 18 August 2021 using the BMKG network. Of the 101 earthquakes, we relocated the hypocenter using the multiple difference method and obtained 75 earthquake events resulting from the relocation. The results obtained from the relocation are that several earthquake events with a fixed depth of 10 km have been updated. To validate the results, we used a histogram of travel time results, which depict the relocation results as good, and some close to zero. The results of the hypocenter relocation have a depth of 5 to 30 km and are collected in one location. The shift’s direction and angle from the relocation results show that most of them are in a dominant direction to the north. It is interpreted that the earthquake was caused by force activity caused by the Balantak thrust, which is in the east and has a north direction towards the study site.

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Section: Methodsmentioning

confidence: 99%

Hypocenter Relocation of Local Earthquake using Double Difference Method in Central Sulawesi from BMKG Network Data: Time Periods of July 26 - August 18, 2021

Jayadi

Janat

Santosa

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…A hypocenter is the center of an earthquake within the earth. Hypocenters can be found using seismic waves (primary and secondary waves) [5]. A hypocenter can be generated due to pressure coming from within that makes the earth's layers vibrate [10] [11].…”

Section: Hypocentermentioning

confidence: 99%

“…This causes Indonesia to be prone to volcanic disasters, which have caused a lot of damage and victims of the disaster [4]. One of the active volcanoes in Indonesia is Sinabung Volcano, an active stratovolcano-type volcano with an altitude of 2460 meters above sea level [5]. This volcano is in the Karo highlands, Karo Regency, North Sumatra Province.…”

Section: Introductionmentioning

confidence: 99%

“…The ash column was marked to be grey with a thick intensity towards the east and southeast. This eruption was recorded on the seismograph with a maximum amplitude of 47 mm and a duration of 605 seconds [5].…”

Section: Introductionmentioning

confidence: 99%

“…The results of the determination of the hypocenter distribution of volcanic earthquakes are expected to provide information on the depth of the earthquake to determine the movement of magma and the characteristics of events that occur during the preeruption process of Sinabung Volcano so that the data can be used for mitigation decision making when there is an increase in activity of Sinabung Volcano. Previous research using seismic methods has been conducted in the Sinabung Volcano area to determine the location of the earthquake hypocenter for the period 2011 to 2012 [5]. In addition, another study was also conducted using the results of the relocation of the hypocenter of Sinabung Volcano with a 1-D velocity model of primary waves and secondary waves using volcanic earthquake data for January 2017.…”

Section: Introductionmentioning

confidence: 99%

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Hypocenter Distribution Analysis of Sinabung Volcano Eruption in 2021 Using Geiger's With Adaptive Damping (Gad) Method

Arisalwadi,

Rahmania,

Hamidah

et al. 2024

IPR

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Sinabung Volcano is located in the Karo Highlands, Karo Regency, North Sumatra, Indonesia, with a peak of 2460 meters above sea level. This volcano experienced an increase in volcanic activity in the April-October 2021 period, so it is necessary to analyse volcanic seismicity to determine the hypocenter distribution of the volcano. This study aims to determine the hypocenter distribution and classification of volcanic earthquake types based on seismogram recording data of Sinabung Volcano at four stations, namely LKW, BGR, MDD and SGR stations. The method used in this research is Geiger's method with adaptive damping (GAD) to determine the distribution of hypocenters. The results showed that the hypocenter distribution gathered below the crater centre with depths from 0.172 km to 7.139 km. The determination of the hypocenter distribution of volcanic earthquakes is expected to provide information on the depth of the earthquake to determine the movement of magma and the characteristics of events that occur during the pre-eruption process of Sinabung Volcano so that this data can be used for mitigation decision making when there is an increase in the activity of Sinabung Volcano.

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Direction of magma migration in Sinabung volcano based on February 2017 hypocenter distribution

Cited by 2 publications

References 13 publications

Hypocenter Relocation of Local Earthquake using Double Difference Method in Central Sulawesi from BMKG Network Data: Time Periods of July 26 - August 18, 2021

Hypocenter Relocation of Local Earthquake using Double Difference Method in Central Sulawesi from BMKG Network Data: Time Periods of July 26 - August 18, 2021

Hypocenter Distribution Analysis of Sinabung Volcano Eruption in 2021 Using Geiger's With Adaptive Damping (Gad) Method

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