Locating tremor and shock sources recorded at Bromo Volcano

Gottschämmer, Ellen; Surono, I

doi:10.1016/s0377-0273(00)00171-2

Cited by 27 publications

(17 citation statements)

References 12 publications

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“…A description of the uprising magma intrusion was provided by the tremor source location performed by using a grid search approach [ Gottschämmer and Surono , 2000; Battaglia et al , 2005; Di Grazia et al , 2006, 2009]. A few hours before the beginning of the eruption, volcanic tremor showed significant variation both in the amplitude and the source location (Figure 7).…”

Section: The 2008–2009 Flank Eruptionmentioning

confidence: 99%

The initial phases of the 2008–2009 Mount Etna eruption: A multidisciplinary approach for hazard assessment

Bonaccorso¹,

Bonforte²,

Calvari³

et al. 2011

J. Geophys. Res.

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[1] Between 2007 and early 2008, the Istituto Nazionale di Geofisica e Vulcanologia (INGV) monitoring networks on Etna volcano recorded a recharging phase that climaxed with a new effusive eruption on 13 May 2008 and lasted about 14 months. A dike-forming intrusion was accompanied by a violent seismic swarm, with more than 230 events recorded in the first 6 h, the largest being M L = 3.9. In the meanwhile, marked ground deformation was recorded by the permanent tilt and GPS networks, and sudden changes in the summit area were detected by five continuously recording magnetic stations. Poor weather conditions did not allow direct observation of the eruptive events, but important information was provided by infrared satellite images that detected the start of lava fountains from the eruptive fissure, feeding a lava flow. This flow spread within the Valle del Bove depression, covering 6.4 km on the southeastern flank of the volcano in a few hours. The seismicity and deformation pattern indicated that the dike-forming intrusion was propagating northward. It produced a dry fracture field, which generated concern for the possibility that the eruptive fissures could expand downslope toward populated areas. Monitoring and modeling of the multidisciplinary data, together with the simulations of ash dispersal and lava flows, allowed us both to infer the eruptive mechanisms and to provide correct interpretation of the ongoing phenomena, furnishing useful information for civil defense purposes. We describe how this approach of feedback between monitoring and research provides critical support to risk evaluation.

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Section: The 2008–2009 Flank Eruptionmentioning

confidence: 99%

The initial phases of the 2008–2009 Mount Etna eruption: A multidisciplinary approach for hazard assessment

Bonaccorso¹,

Bonforte²,

Calvari³

et al. 2011

J. Geophys. Res.

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“…Schematic models of the underground plumbing system with different parts of the feeding system generating tremors of different frequencies have been summarized by Gresta et al [1987]. Gottschämmer and Surono [2000] used the velocity amplitude of tremor recorded at Bromo volcano for locating its source with a grid method.…”

Section: Introductionmentioning

confidence: 99%

Location of seismic events and eruptive fissures on the Piton de la Fournaise volcano using seismic amplitudes

Battaglia¹,

Aki²

2003

J. Geophys. Res.

204

194

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[1] We present a method for locating the source of seismic events on Piton de la Fournaise. The method is based on seismic amplitudes corrected for station site effects using coda site amplification factors. Once corrected, the spatial distribution of amplitudes shows smooth and simple contours for many types of events, including rockfalls, long-period events and eruption tremor. On the basis of the simplicity of these distributions we develop inversion methods for locating their origins. To achieve this, the decrease of the amplitude as a function of the distance to the source is approximated by the decay either of surface or body waves in a homogeneous medium. The method is effective for locating rockfalls, longperiod events, and eruption tremor sources. The sources of eruption tremor are usually found to be located at shallow depth and close to the eruptive fissures. Because of this, our method is a useful tool for locating fissures at the beginning of eruptions. Citation: Battaglia, J., and K. Aki, Location of seismic events and eruptive fissures on the Piton de la Fournaise volcano using seismic amplitudes,

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“…1b). van Gerven and Pichler (1995) distinguish five stages in the evolution of the Tengger system, and consider that intra-caldera (Bromo) activity started sometimes prior to~1800 yrs B.P.. More than 60 explosive eruptions (mainly of VEI = 2) have occurred at Bromo over the past four centuries, most recently in 2000, 2004-2012CVGHM Reports). In spite of this recurrent activity, available information on Bromo in the international geological literature is relatively scarce.…”

Section: Bromo Volcanomentioning

confidence: 99%

“…The petrology of erupted magmas (medium-to high-k andesites and basaltic andesites) is described in Whitford et al (1979), van Gerven and Pichler (1995) and, marginally, in the study of Carn and Pyle (2001) on the nearby Lamongan Volcanic Field. Gottschämmer (1999) and Gottschämmer and Surono (2000) describe the location and spectral characteristics of the volcano seismicity (tremor, shock waves and LP events). Andres and Kasgnoc (1998) …”

Section: Bromo Volcanomentioning

confidence: 99%

First determination of magma-derived gas emissions from Bromo volcano, eastern Java (Indonesia)

Aiuppa

Bani

Moussallam

et al. 2015

Journal of Volcanology and Geothermal Research

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The composition and fluxes of volcanic gases released by persistent open-vent degassing at Bromo Volcano, east Java (Indonesia), were characterised in September 2014 from both in-situ Multi-GAS analysis and remote spectroscopic (dual UV camera) measurements of volcanic plume emissions. Our results demonstrate that Bromo volcanic gas is water-rich (H 2 O/SO 2 ratios of 56-160) and has CO 2 /SO 2 (4.1 ± 0.7) and CO 2 /S tot (3.2 ± 0.7) ratios within the compositional range of other high-temperature magma-derived gases in Indonesia. H 2 /H 2 O and H 2 S/SO 2 ratios constrain a magmatic gas source with minimal temperature of~700°C and oxygen fugacity of 10 , which is ten times higher than reported from few previous studies. Our results indicate that Bromo ranks amongst the strongest sources of quiescent volcanic SO 2 emission measured to date in Indonesia, being comparable to Merapi volcano in central Java. By combining our results for the gas composition with the SO 2 plume flux, we assess for the first time the fluxes of H 2 O (4725 ± 2292 t d ) and H 2 (1.1 ± 0.8) from Bromo. Our study thus contributes a new piece of information to the still limited data base for volcanic gas emissions in Indonesia, and confirms that much remain to be done to fully assess the contribution of this very active arc region to global volcanic gas fluxes.

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Locating tremor and shock sources recorded at Bromo Volcano

Cited by 27 publications

References 12 publications

The initial phases of the 2008–2009 Mount Etna eruption: A multidisciplinary approach for hazard assessment

The initial phases of the 2008–2009 Mount Etna eruption: A multidisciplinary approach for hazard assessment

Location of seismic events and eruptive fissures on the Piton de la Fournaise volcano using seismic amplitudes

First determination of magma-derived gas emissions from Bromo volcano, eastern Java (Indonesia)

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