Sequential dome-collapse nuées ardentes analyzed from broadband seismic data, Merapi Volcano, Indonesia

Brodscholl, Arnold L.; Kirbani, Sri Brotopuspito; Voight, B.

doi:10.1016/s0377-0273(00)00145-1

Cited by 19 publications

(5 citation statements)

References 3 publications

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“…Thus, a volume greater than 30 000 m 3 is required for a PF of 1 km, and between 50 000 m 3 and 220 000 m 3 for it to reach inhabited areas. This simple estimate is compatible with the results of Brodscholl et al (2000) for the 22 November 1994 collapses that affected the valleys of the south flank. They estimated the volume of the PF that destroyed inhabited areas (6 km from the summit) at 260 000 m 3 .…”

Section: Dome and Pdcssupporting

confidence: 89%

Growth and collapse of the 2018–2019 lava dome of Merapi volcano

Kelfoun

Santoso²,

Latchimy

et al. 2021

Bull Volcanol

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Dome and Pdcssupporting

confidence: 89%

Growth and collapse of the 2018–2019 lava dome of Merapi volcano

Kelfoun

Santoso²,

Latchimy

et al. 2021

Bull Volcanol

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“…3A) reveals that the collapse was neither continuous nor uniform; PFs were generated instead in dis-crete packets, the amplitudes of which tended to increase as the collapse progressed toward its climax. The integrated envelope of signal amplitude at HARR is assumed as a proxy for total PF volume (Brodscholl et al, 2000); the area bounding individual peaks on the amplitude plot then gives an estimate of volume for individual events. Our method assumes that the PFs originate at a common source and follow the same track, which is reasonable given the descent of all fl ows in the Tar River valley.…”

Section: Seismic and Strain Observationsmentioning

confidence: 99%

Unique and remarkable dilatometer measurements of pyroclastic flow–generated tsunamis

Mattioli

Voight

Linde

et al. 2007

Geol

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Pyroclastic fl ows entering the sea may cause tsunamis at coastal volcanoes worldwide, but geophysically monitored fi eld occurrences are rare. We document the process of tsunami generation during a prolonged gigantic collapse of the Soufrière Hills volcano lava dome on Montserrat on 12-13 July 2003. Tsunamis were initiated by largevolume pyroclastic fl ows entering the ocean. We reconstruct the collapse from seismic records and report unique and remarkable borehole dilatometer observations, which recorded clearly the passage of wave packets at periods of 250-500 s over several hours. Strain signals are consistent in period and amplitude with water loading from passing tsunamis; each wave packet can be correlated with individual pyroclastic fl ow packages recorded by seismic data, proving that multiple tsunamis were initiated by pyroclastic fl ows. Any volcano within a few kilometers of water and capable of generating hot pyroclastic fl ows or cold debris fl ows with volumes greater than 5 × 10 6 m 3 may generate signifi cant and possibly damaging tsunamis during future eruptions.

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“…Consequently, the evolution of the dome has attracted the attention of scientists in different fields of research, e.g., rock geochemistry [16], gas analysis [17], numerical modeling [18], petrology [19], surface deformation [20,21], and seismology [22]. During the historical period, the dome of Merapi Volcano has been lodged into a horseshoe crater-rim, opened towards the south, directing most of the gravity collapse pyroclastic flows and rockfalls [6], locally called "guguran", in this same direction (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

LiDAR and UAV SfM-MVS of Merapi Volcanic Dome and Crater Rim Change from 2012 to 2014

et al. 2022

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Spatial approaches, based on the deformation measurement of volcanic domes and crater rims, is key in evaluating the activity of a volcano, such as Merapi Volcano, where associated disaster risk regularly takes lives. Within this framework, this study aims to detect localized topographic change in the summit area that has occurred concomitantly with the dome growth and explosion reported. The methodology was focused on two sets of data, one LiDAR-based dataset from 2012 and one UAV dataset from 2014. The results show that during the period 2012–2014, the crater walls were 100–120 m above the crater floor at its maximum (from the north to the east–southeast sector), while the west and north sectors present a topographic range of 40–80 m. During the period 2012–2014, the evolution of the crater rim around the dome was generally stable (no large collapse). The opening of a new vent on the surface of the dome has displaced an equivalent volume of 2.04 × 104 m3, corresponding to a maximum −9 m (+/−0.9 m) vertically. The exploded material has partly fallen within the crater, increasing the accumulated loose material while leaving “hollows” where the vents are located, although the potential presence of debris inside these vents made it difficult to determine the exact size of these openings. Despite a measure of the error from the two DEMs, adding a previously published dataset shows further discrepancies, suggesting that there is also a technical need to develop point-cloud technologies for active volcanic craters.

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Sequential dome-collapse nuées ardentes analyzed from broadband seismic data, Merapi Volcano, Indonesia

Cited by 19 publications

References 3 publications

Growth and collapse of the 2018–2019 lava dome of Merapi volcano

Growth and collapse of the 2018–2019 lava dome of Merapi volcano

Unique and remarkable dilatometer measurements of pyroclastic flow–generated tsunamis

LiDAR and UAV SfM-MVS of Merapi Volcanic Dome and Crater Rim Change from 2012 to 2014

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