Correlation of seismic activity and fumarole temperature at the Mt. Merapi volcano (Indonesia) in 2000

Richter, Gregor; Wassermann, Joachim; Zimmer, Martin; Ohrnberger, Matthias

doi:10.1016/j.jvolgeores.2004.03.006

Cited by 35 publications

(24 citation statements)

References 16 publications

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“…In this last case the increase of both temperature and volcano-seismic event number took place contemporaneously. This concurs with the results obtained by RICHTER et al (2004), who observed changes in fumarole temperature at Merapi just a few minutes after seismic ultra-long-period signals and simultaneously with higher-frequency seismic transients. The different increasing trends in the measured geochemical and geophysical time series during the anomalous periods could be due to a permeability increase of the system favouring the fast upward migration of the hydrothermal fluids and then the quick variations of the recorded time series (Fig.…”

supporting

confidence: 92%

“…Time-relationships between variations in temperature and/or composition of hydrothermal fluids and seismic event occurrences have also been observed in other volcanoes such as Merapi, Indonesia (RICHTER et al, 2004), Kuchinoerabujima, Japan (TRIASTUTY et al, 2009), Mammoth Mountain,…”

mentioning

confidence: 70%

“…2a, b, e). On the contrary, at Merapi (Indonesia), RICHTER et al (2004) reported some evidences that rainfall may influence seismicity rates. Concerning SHS zone temperatures, rainfall has small effects depending on the amount of precipitation and on the convective component of the heat transport versus the whole heat transfer toward soil surface (Fig.…”

Section: Comparison Among Daily Number Of Volcanoseismic Events Fumamentioning

confidence: 99%

“…2d). The meteorological influences in the fumaroles emissions have already been analysed at Merapi (RICHTER et al, 2004), but, though the outlet temperatures are similar to that of Vulcano Island, the effect of rainfall is not comparable for many reasons. Merapi fumaroles, as well as Vulcano ones, showed temperature ranging between 320 and 400°C, but Richter et al reported 1,400 mm of rainfall during only 6 months at Merapi while at Vulcano 1,450 mm was the total amount of rainfall over 4 years.…”

Section: Comparison Among Daily Number Of Volcanoseismic Events Fumamentioning

confidence: 99%

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Multiparametric Approach in Investigating Volcano-Hydrothermal Systems: the Case Study of Vulcano (Aeolian Islands, Italy)

Cannata

Diliberto

Alparone

et al. 2011

Pure Appl. Geophys.

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Seismic activity, ground deformation, and soil and fumarole temperatures acquired during 2004-2007 at Vulcano (Aeolian Islands) are analysed and the time relations among the different time series are discussed. Changes in temperature of fumarolic gases took place during four ''anomalous'' periods () at the same time as an increasing number of volcano-seismic events. In particular, the temperatures at high temperature vents and at steam heated soil ranged in time from 180 to 440°C and from 20 to 90°C, respectively. The maximum daily number of volcano-seismic events was 57, reached during the second anomalous period. This seismicity, characterised by focal depth generally lower than 1 km below sea level (b.s.l.) and composed of different kinds of events associated to both resonance and shear failure processes, is related to the shallow dynamics of the hydrothermal system. During the analysed period, very few volcano-tectonic earthquakes took place and tilt recordings showed no sharp or important changes. In light of such observations, the increases in both temperature and volcano-seismic events number were associated to increases in the release of gas from a deep and stable magma body, without magma intrusions within the shallow hydrothermal system. Indeed, a greater release of gas from depth leads to increased fluid circulation, that can promote increases in volcano-seismic events number by both fracturing processes and resonance and vibration in cracks and conduits. The different trends observed in the measured geochemical and geophysical series during the anomalous periods can be due to either time changes in the medium permeability or a changing speed of gas release from a deep magma body. Finally, all the observed variations, together with the changing temporal distribution of the different seismic event kinds, suggest that the hydrothermal system at Vulcano can be considered unsteady and dynamic.

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supporting

confidence: 92%

mentioning

confidence: 70%

Section: Comparison Among Daily Number Of Volcanoseismic Events Fumamentioning

confidence: 99%

Section: Comparison Among Daily Number Of Volcanoseismic Events Fumamentioning

confidence: 99%

See 2 more Smart Citations

Multiparametric Approach in Investigating Volcano-Hydrothermal Systems: the Case Study of Vulcano (Aeolian Islands, Italy)

Cannata

Diliberto

Alparone

et al. 2011

Pure Appl. Geophys.

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“…Fumarolic temperatures, as high as 910°C in 2000 (Sortino et al, 2006), are strongly influenced by tropical rainfall (Richter et al 2004). The summit region is mainly composed of imbricate lava domes, crater rims and pyroclastic deposits, locally highly altered.…”

Section: Merapi Volcanic and Degassing Activitymentioning

confidence: 99%

Structure and CO2 budget of Merapi volcano during inter-eruptive periods

Toutain

Sortino

Baubron³

et al. 2009

Bull Volcanol

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Soil temperature and gas (CO 2 concentration and flux) have been investigated at Merapi volcano (Indonesia) during two inter-eruptive periods (2002 and 2007). Precise imaging of the summit crater and the spatial pattern of diffuse degassing along a gas traverse on the southern slope are interpreted in terms of summit structure and major caldera organization. The summit area is characterized by decreasing CO 2 concentrations with distance from the 1932 crater rim, down to atmospheric levels at the base of the terminal cone. Similar patterns are measured on any transect down the slopes of the cone. The spatial distribution of soil gas anomalies suggests that soil degassing is controlled by structures identified as concentric historical caldera rims (1932, 1872, and 1768), which have undergone severe hydrothermal self-sealing processes that dramatically lower the permeability and porosity of soils. Temperature and CO 2 flux measurements in soils near the dome display heterogeneous distributions which are consistent with a fracture network identified by previous geophysical studies. These data support the idea that the summit is made of isolated and mobile blocks, whose boundaries are either sealed by depositional processes or Bull Volcanol (2009) 71:815-826

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The Scientific Discovery of Merapi: From Ancient Javanese Sources to the 21st Century

2023

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Correlation of seismic activity and fumarole temperature at the Mt. Merapi volcano (Indonesia) in 2000

Cited by 35 publications

References 16 publications

Multiparametric Approach in Investigating Volcano-Hydrothermal Systems: the Case Study of Vulcano (Aeolian Islands, Italy)

Multiparametric Approach in Investigating Volcano-Hydrothermal Systems: the Case Study of Vulcano (Aeolian Islands, Italy)

Structure and CO2 budget of Merapi volcano during inter-eruptive periods

The Scientific Discovery of Merapi: From Ancient Javanese Sources to the 21st Century

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