Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Takehiro Koyaguchi"'
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-15 (2023)
Abstract We investigated magma storage conditions prior to the 2011 and 2018 eruptions at Kirishima Shinmoe-dake volcano in Japan based on the relationship between geodetic volume change of magma chamber and erupted magma volume. We derived an analyt
Externí odkaz:
https://doaj.org/article/32c2b39cb7854d148d86372207430771
Publikováno v:
Journal of Applied Volcanology, Vol 11, Iss 1, Pp 1-13 (2022)
Abstract A physics-based model to estimate source conditions for a tephra-dispersal model is developed. The source condition is generally expressed by a distribution of released particles along an eruption plume (referred to as “source magnitude di
Externí odkaz:
https://doaj.org/article/dabe2182ffb64871989dd3b23ccf65c4
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 16, Pp n/a-n/a (2023)
Abstract A pyroclastic density current (PDC) is characterized by its strong stratification of particle concentration; it consists of upper dilute and lower dense currents, which generally control the dynamics and deposits of PDCs, respectively. To ex
Externí odkaz:
https://doaj.org/article/5707c61557dc48d89273689c41961036
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Super-eruptions such as Toba generate large co-ignimbrite plumes, but their behaviour is not fully understood. Here, the authors show that super-eruption plumes behave differently to Plinian eruptions and can generate over-plumes into the mesosphere,
Externí odkaz:
https://doaj.org/article/3cffc204af624973bf09d8662b2260a4
Publikováno v:
Progress in Earth and Planetary Science, Vol 4, Iss 1, Pp 1-13 (2017)
Abstract Gravity currents with various contrasting densities play a role in mass transport in a number of geophysical situations. The ratio of the density of the current, ρ c, to the density of the ambient fluid, ρ a, can vary between 100 and 103.
Externí odkaz:
https://doaj.org/article/c099e7c1d6b14629bac4b3f0cbf1cce7
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-2 (2018)
We became aware of a mistake in the data displayed in the original version of Fig. 3. Specifically, the lines showing the relationship between column height and MFR for MFR larger than 1010 kg/s, were based on simulations where the exit gas fraction
Externí odkaz:
https://doaj.org/article/220fd77d58ea492b961ab9133b1375f2
A physics-based model to estimate source conditions for a tephra-dispersal model is developed. The source condition is generally expressed by a distribution of released particles along an eruption plume (referred to as source magnitude distribution"
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::256b69b4ae72405b40e14c073fb85504
https://doi.org/10.21203/rs.3.rs-2075034/v1
https://doi.org/10.21203/rs.3.rs-2075034/v1
Publikováno v:
Icarus. 400:115533
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7955ba6952795c6f77942f9dbb107630
https://doi.org/10.1016/j.icarus.2023.115533
https://doi.org/10.1016/j.icarus.2023.115533
Autor:
Ermanno Brosch, Takehiro Koyaguchi, Gert Lube, Hiroyuki Shimizu, Yujiro Suzuki, Matteo Cerminara
Numerical results of a two-layer depth-averaged model of pyroclastic density currents (PDCs) were compared with an experimental PDC generated at the international eruption simulator facility (the Pyroclastic flow Eruption Large-scale Experiment (PELE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed62502d5613f4d3253410271395f697
https://doi.org/10.21203/rs.3.rs-674704/v1
https://doi.org/10.21203/rs.3.rs-674704/v1
Publikováno v:
Jenkins, S F, Goldstein, H, Bebbington, M S, Sparks, R S J & Koyaguchi, T 2019, ' Forecasting explosion repose intervals with a non-parametric Bayesian survival model : Application to Sakura-jima volcano, Japan ', Journal of Volcanology and Geothermal Research, vol. 381, pp. 44-56 . https://doi.org/10.1016/j.jvolgeores.2019.04.008
Forecasting the repose between eruptions at a volcano is a key goal of volcanology for emergency planning and preparedness. Previous studies have used the statistical distribution of prior repose intervals to estimate the probability of a certain rep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ed53bece0227aa9fedb4140df9ce625
https://doi.org/10.1016/j.jvolgeores.2019.04.008
https://doi.org/10.1016/j.jvolgeores.2019.04.008