Results 21 to 30 of about 132,968 (237)
Earth, Planets and Space, 2018 The 2015 unrest of the Hakone volcano in Japan, which began on April 26, generated earthquake swarms accompanied by long-term deformation. The earthquake swarm activity reached its maximum in mid-May and gradually calmed down; however, it increased again
Ryou Honda +5 more
doaj +2 more sources
Migration of seismic activity associated with phreatic eruption at Merapi volcano, Indonesia [PDF]
Journal of Volcanology and Geothermal Research, 2020 Abstract Phreatic activity of Merapi started after nearly 2 years of quiescence following the October–November 2010 eruption which was the largest in more than 100 years. A dozen eruptions identified by visual and/or seismic observations took place between August 2012 and April 2014.
Métaxian, Jean-Philippe +10 more
openaire +4 more sources
Short-period volcanic gas precursors to phreatic eruptions: Insights from Poás Volcano, Costa Rica
Earth and Planetary Science Letters, 2016 AbstractVolcanic eruptions involving interaction with water are amongst the most violent and unpredictable geologic phenomena on Earth. Phreatic eruptions are exceptionally difficult to forecast by traditional geophysical techniques. Here we report on short-term precursory variations in gas emissions related to phreatic blasts at Poás volcano, Costa ...
Alessandro Aiuppa +2 more
exaly +5 more sources
Experimental constraints on phreatic eruption processes at Whakaari (White Island volcano)
Journal of Volcanology and Geothermal Research, 2015 AbstractVigorous hydrothermal activity interspersed by sequences of phreatic and phreatomagmatic eruptions occur at Whakaari (White Island volcano), New Zealand. Here, we investigate the influence of sample type (hydrothermally altered cemented ash tuffs and unconsolidated ash/lapilli) and fragmentation mechanism (steam flashing versus gas expansion ...
Klaus F X Mayer +2 more
exaly +5 more sources
Earth, Planets and Space, 2019 On June 29, 2015, a small phreatic eruption occurred in the most intensively steaming area of Hakone volcano, Japan. A previous magnetotelluric survey for the whole volcano revealed that the eruption center area (ECA) was located near the apex of a bell ...
Kazutaka Mannen +7 more
doaj +2 more sources
Earth, Planets and Space, 2018 Although the 2015 Hakone Volcano eruption was a small-scale phreatic eruption with a discharged mass of only about 100 tons, interferometric synthetic aperture radar successfully detected surface deformations related to the eruption.
Ryosuke Doke +4 more
doaj +2 more sources
Earth, Planets and Space, 2018 We successfully monitored the ground deformation of an eruption center during the 2015 phreatic eruption of Hakone volcano, Japan, using ground-based interferometric synthetic aperture radar (GB-InSAR).
Senro Kuraoka +3 more
doaj +2 more sources
Hazards of volcanic lakes: analysis of Lakes Quilotoa and Cuicocha, Ecuador [PDF]
Advances in Geosciences, 2008 Volcanic lakes within calderas should be viewed as high-risk systems, and an intensive lake monitoring must be carried out to evaluate the hazard of potential limnic or phreatic-magmatic eruptions. In Ecuador, two caldera lakes – Lakes Quilotoa
G. Gunkel +3 more
doaj +3 more sources
Geophysical Research Letters, 2021 From June 29 to July 1, 2015, a phreatic eruption occurred in Owakudani, the largest fumarole area in Hakone volcano, Japan. In this study, an interferometric synthetic aperture radar (InSAR) time series analysis of the Advanced Land Observing Satellite ...
R. Doke, K. Mannen, K. Itadera
semanticscholar +1 more source
Earth, Planets and Space, 2023 In 2018, a phreatic eruption occurred at Mt. Motoshirane, a pyroclastic cone group of the Kusatsu-Shirane Volcano in central Japan. The eruption was abrupt, and no signs of volcanic activity have been observed in recent years, in contrast to the other ...
Asami Honda +6 more
doaj +1 more source