Solid Earth Sciences (S)
Session Sub-category Volcanology(VC)
Session ID S-VC40
Title Volcanic eruption dynamics and mechanisms: controlling physical and chemical processes
Short Title Eruption dynamics and controls
Main Convener Name Keiko Matsumoto
Affiliation Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology
Co-Convener 1 Name Mayumi Mujin
Affiliation Hokkaido University
Co-Convener 2 Name Dan Muramatsu
Affiliation Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University
Co-Convener 3 Name Jamie Ian Farquharson
Affiliation Niigata University
Co-Convener 4 Name Kae Tsunematsu
Affiliation Yamagata University
Co-Convener 5 Name Jong Gil Park
Affiliation Rice University
Session Language 
E
Scope 
Volcanic eruptions encompass multiple interrelated phenomena, from magma accumulation at depth to vesiculation and crystallization during magma ascent in volcanic conduits, culminating in the dispersion of volcanic products. Advancing from physical and chemical processes to mechanisms and ultimately to eruption dynamics is necessary for a comprehensive understanding of volcanic eruption. A broad range of approaches is required to elucidate these subjects. We welcome contributions from geophysical and geochemical observations of active/quiet volcanoes, petrological/geochemical measurements of eruptive products, theoretical approaches, numerical simulations, laboratory experiments, and interdisciplinary studies that combine the above approaches.
Presentation Format Oral and Poster presentation
Invited Authors Kyoka Ishii (Facalty of Science, Kyoto University)
Mizuki Nishiwaki (The University of Shiga Prefecture)
Kyle Anderson (U.S. Geological Survey Volcano Science Center)
Time Presentation No Title Presenter
Oral Presentation May 27 AM1
9:00 - 9:15 SVC40-01 Forecasting lava fountain eruptions at Kīlauea volcano, Hawaii Kyle R Anderson
9:15 - 9:30 SVC40-02 Experimental particle-laden jet noise and its application to volcanoes Gilles Seropian
9:30 - 9:45 SVC40-03 Revisiting the seismic single force model through laboratory jet experiments Nataliya Galina
9:45 - 10:00 SVC40-04 Investigating the seismic timeline of the 2025 Shinmoedake unrest & eruption Darren Tan
10:00 - 10:15 SVC40-05 Implications of the temperature dependence of a shallow alteration layer for phreatic eruption: Insights from the electrical resistivity structure beneath Zao Volcano, NE Japan Masahiro Ichiki
10:15 - 10:30 SVC40-06 Dynamics of volcanic fluid supply to the crater lake at Aso Volcano inferred from multi-parameter observations Kyoka Ishii
Oral Presentation May 27 PM1
13:45 - 14:00 SVC40-07 Onset of magma vesiculation: nucleation or spinodal decomposition? Mizuki Nishiwaki
14:00 - 14:15 SVC40-08 Liquid immiscibility and nanolite crystallisation in andesitic Plinian eruption Takuma Muraki
14:15 - 14:30 SVC40-09 Pervasive outgassing via diktytaxitic texture may suppress self-explosivity in lava domes: Insights from Ogurayama, Towada Volcano Natsuko Sekiya
14:30 - 14:45 SVC40-10 Conduit Control and Evolution During the 45 ka Basaltic Andesite Caldera-Forming Eruption of Tengger Caldera Andhika Nugraha
14:45 - 15:00 SVC40-11 Toward forecasting eruption transitions: A groundmass texture database for post-45 ka felsic magmatism at Haruna Volcano Yuki Suzuki
15:00 - 15:15 SVC40-12 A Machine Learning–Based Texture Analysis Method for Pumice: Application to the Shinmoedake Eruption Akane Kinoshita
Oral Presentation May 27 PM2
15:30 - 15:45 SVC40-13 Protracted assembly of the magmas feeding the 1783-84 Laki fissure eruption, Iceland Euan Mutch
15:45 - 16:00 SVC40-14 Magma overpressure and depth estimates from partially exposed dykes Sirshendu Kumar Biswas
16:00 - 16:15 SVC40-15 Regional sensitivity analysis of a conduit flow model for andesitic lava effusion Akito Tsuchiya
16:15 - 16:30 SVC40-16 Reconstructing Fragmentation and Eruptive Variability from Proximal Ash Deposits at Mount Bromo, Indonesia Aisyah Qurrataaini
16:30 - 16:45 SVC40-17 Analysis of the effective density of volcanic ash and ashfall process at Sakurajima volcano using an optical disdrometer Takato Ono
16:45 - 17:00 SVC40-18 A machine-learning identification method on the quantification of volcanic ash materials: application to temporal changes in ash composition of Sakurajima Nobuo Geshi
Presentation No Title Presenter
Poster Presentation May 27 PM3
SVC40-P01 Evaluation of the source magnitude distribution (SMD) model based on tephra fall distribution Toshitaka Sakai
SVC40-P02 Morphological differences of pumice lapilli between pyroclastic fall and pyroclastic density current deposits: a case study of andesitic to rhyolitic eruptions in Japan Yusuke Haruta
SVC40-P03 Spatiotemporal relationship between a subsurface pressure source and groundwater flow: Observations at the Onikobe and Rausu Geysers, Japan Harutou Tanabe
SVC40-P04 Magma discharge rate estimation for historical sub-Plinian and Plinian eruptions in Japan using a 1-D steady volcanic plume model driven by reanalysis meteorological fields Tomofumi Kozono
SVC40-P05 Mathematical modeling of summit caldera collapse with dike deformation Sora Nishikawa
SVC40-P06 What controls the explosive-to-effusive transition in the 2011-2012 Cordón Caulle eruption? Jong Gil Park
SVC40-P07 Tensile deformation experiment of analog low-viscosity magma with varying strain rates and particle sizes Sayaka Oda
SVC40-P08 The development of in-situ permeability measurement at magmatic temperature Takeru Ohata
SVC40-P09 The Role of Gas Flushing in Strombolian Activity Within the Sakurajima Andesitic Eruption Cycle Haruto Abe
SVC40-P10 Magma storage conditions and ascent processes of Vulcanian eruptions at Sakurajima Volcano inferred from magnetite chemistry: the uniqueness of the 24 August 1995 eruption Naoki Araya
SVC40-P11 Magma–air interactions within an eruption column: Insights from Scoria of the 1986 Sub-Plinian Eruption at Izu-Oshima Volcano Keiko Matsumoto
SVC40-P12 Relationship between groundmass crystal textures and eruption styles of mafic magma: A case study of the Izu-Oshima 1986 eruption Sora Sato
SVC40-P13 Heterogeneous Textures Observed in the Groundmass of Ho-II Scoria from the 1707 Hoei Eruption of Fuji Volcano Yukako Kanegae
SVC40-P14 Microstructural features of a dacitic obsidian from Fuji volcano, Japan Haruna Yabutani