Constraints on the source mechanism of harmonic tremors based on seismological, ground deformation, and visual observations at Sakurajima volcano, Japan

Maryanto, Sukir; Iguchi, Masato; Tameguri, Takeshi

doi:10.1016/j.jvolgeores.2007.10.004

Cited by 32 publications

(28 citation statements)

References 15 publications

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“…Beberapa peneliti menyebut tremor tersebut dengan istilah quasi-harmonic tremor. Dalam penelitian yang dilakukan tremor harmonik mempunyai ciri adanya perulangan puncak secara periodik pada puncak spektrumnya [15]. Pada penelitian ini tremor Gunungapi Bromo dikarakterisasi menjadi dua tipe tremor yaitu tremor yang terjadi terus menurus dengan amplitudo yang tinggi mempunyai frekuensi dominan sekitar 5 Hz dan tremor yang berasosiasi dengan letusan atau letupan mempunyai frekuensi dominan sekitar 4,5 Hz.…”

Section: Hasil Dan Pembahasanunclassified

Spectral and Waveform Cross-Correlation Analysis of Volcanic Tremor from The 2016 Eruption at Bromo Volcano, East Java

Arisalwadi

Maryanto

Triastuty

2017

Nat-B

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ABSTRAKFrom the results of spectral analysis volcanic tremor, it's can be seen the value of the frequency peaks irregular means the type of spasmodic tremor. Based on the pattern of the peaks of the tremor spectral analysis using 3 stations having the same pattern and the analysis of cross-correlation waveform volcanic tremor of Bromo volcano was indicated from the same source mechanism because the correlation coefficient value is good that ranged about 0.6 -0.8.

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Section: Hasil Dan Pembahasanunclassified

Spectral and Waveform Cross-Correlation Analysis of Volcanic Tremor from The 2016 Eruption at Bromo Volcano, East Java

Arisalwadi

Maryanto

Triastuty

2017

Nat-B

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“…Dari penelitian lainnya, diketahui pula bahwa posisi sumber tremor harmonik yang dihasilkan Gunungapi Sakurajima tidak terlalu dalam [6].…”

Section: Pendahuluanunclassified

“…Kedua jenis tremor harmonik tersebut memiliki pola spektral yang serupa dengan karakter temporal yang berbeda. HTB memiliki puncak-puncak frekuensi yang konstan, sedangkan HTE memiliki puncak frekuensi yang terus meningkat secara gradual [6].…”

Section: Pendahuluanunclassified

Preliminary Study on the Determination of Volcanic Tremor Epicenter Using Semblance Method (Case Study of Sakurajima Volcano)

Andinisari

Maryanto

Nadhir

2013

Nat-B

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ABSTRAKTremor vulkanik adalah salah satu aktivitas vulkanik yang penting karena kaitannya dengan pergerakan magma dan aktivitas eruptif suatu gunungapi. Oleh karena itu penentuan episenter tremor vulkanik menjadi sangat penting. Tidak adanya kenampakan gelombang P dan S pada seismogram tremor vulkanik adalah faktor utama yang menyebabkan sulitnya penentuan episenter. Penggunaan metode semblance dalam penentuan episenter dinilai tepat karena metode tersebut tidak membutuhkan informasi berupa waktu tiba gelombang P dan S. Studi pendahuluan telah dilakukan untuk menentukan episenter tremor vulkanik Gunungapi Sakurajima dengan durasi 100 s.

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“…Indonesia contains about 40% of the global geothermal potential with about 80% of it being volcano-hosted geothermal, as Indonesia has 127 volcanoes-or about 13% of volcanoes around the globe [1][2][3]. There are 265 identified geothermal energy locations with a total potential of 28.1 GWe.…”

Section: Introductionmentioning

confidence: 99%

Magnetotelluric-Geochemistry Investigations of Blawan Geothermal Field, East Java, Indonesia

et al. 2017

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An integrated magnetotelluric (MT) and geochemical study of the Blawan geothermal field has been performed. The character of the hot springs, the reservoir temperature, and geothermal reserve potential of Blawan geothermal field are assessed. MT measurements, with 250 m up to 1200 m spacings, were made at 19 sites, and 6 locations at the Blawan hot springs have been sampled for geochemical survey. The results of 2D modelling indicated that the geothermal system in the research area consisted of a cap rock zone (≤32 Ω·m), reservoir zone (>32 -≤512 Ω·m), and heat source zone (>512 Ω·m), and also identified faults. The characteristics of the hot spring water were identified through analyzing the major and minor elements. A ternary diagram (Cl-SO 4 -HCO 3 ) showed that the Blawan hot springs consist of bicarbonate water (at locations of AP-01, AP-02, AP-03) and chloride water (at locations of AP-04, AP-05, and AP-06), with a reservoir temperature of approximately 90 • C based on the Na-K-Ca geothermometer results. An estimate of the geothermal energy using the volumetric method, gave a total geothermal reserve potential of 1.823 MWe.

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Constraints on the source mechanism of harmonic tremors based on seismological, ground deformation, and visual observations at Sakurajima volcano, Japan

Cited by 32 publications

References 15 publications

Spectral and Waveform Cross-Correlation Analysis of Volcanic Tremor from The 2016 Eruption at Bromo Volcano, East Java

Spectral and Waveform Cross-Correlation Analysis of Volcanic Tremor from The 2016 Eruption at Bromo Volcano, East Java

Preliminary Study on the Determination of Volcanic Tremor Epicenter Using Semblance Method (Case Study of Sakurajima Volcano)

Magnetotelluric-Geochemistry Investigations of Blawan Geothermal Field, East Java, Indonesia

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