JpGU Meeting 2024
Session outline| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Volcanology(VC) | |
| Session ID | S-VC31 | |
| Title | Mechanism of volcanic eruptions | |
| Short Title | Mechanism of volcanic eruptions | |
| Main Convener | Name | Mayumi Mujin |
| Affiliation | Tohoku University | |
| Co-Convener 1 | Name | Ryo Tanaka |
| Affiliation | Hokkaido University,Institute of Seismology and Volcanology | |
| Co-Convener 2 | Name | Takafumi Maruishi |
| Affiliation | National Research Institute for Earth Science and Disaster Resilience | |
| Co-Convener 3 | Name | Dan Muramatsu |
| Affiliation | Earthquake Reserch Institute, The University of Tokyo | |
| Session Language |
J |
|
| Scope |
Multiple processes are involved in volcanic eruptions, including magma accumulation at depth, vesiculation and crystallization during magma ascent in volcanic conduits, and dispersion of volcanic products. We will discuss the mechanism of volcanic eruptions to elucidate these processes and understand volcanic eruption phenomena from an integrated view. 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 |
Yuri Akiba (University of Yamanashi) Atsushi Toramaru (Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University) |
|
| Time | Presentation No | Title | Presenter |
|---|---|---|---|
| Oral Presentation May 28 AM2 | |||
| 10:45 - 11:00 | SVC31-01 | Reconstruction of the pre-caldera-forming phase during the 7.3 ka eruption at the Kikai Caldera (Akahoya eruption) based on geological analyses and plume modeling | Yusuke Haruta |
| 11:00 - 11:15 | SVC31-02 | Investigating the Eruption Shifting of Kikai 7.3 ka Caldera Forming Eruption: A 3D X-ray Microtomography Study of Eruption Products | Selvia Novianti |
| 11:15 - 11:30 | SVC31-03 | Limited eruption condition to produce unsinkable pumice inferred from the floating pumice of Fukutoku-Oka-no-Ba 2021 eruption | Shingo Takeuchi |
| 11:30 - 11:45 | SVC31-04 | Experimental Study on the formation process of surface texture of Pele's tears | Chinatsu Kanazawa |
| 11:45 - 12:00 | SVC31-05 | Spinodal decomposition and nanocrystals in the mafic pyroclasts | Mayumi Mujin |
| 12:00 - 12:15 | SVC31-06 | Rock-magnetic characterization of fine-grained Fe-Ti oxides in volcanic rocks using the coercivity-unblocking temperature diagram below 300 K | Masahiko Sato |
| Oral Presentation May 29 AM1 | |||
| 09:00 - 09:15 | SVC31-07 | Geometric rules behind columnar joints | Yuri Akiba |
| 09:15 - 09:30 | SVC31-08 | Interpretation of morphology of solidified basaltic lava from a viscoplastic model. | Takafumi Maruishi |
| 09:30 - 09:45 | SVC31-09 | A global sensitivity analysis of a conduit flow model for andesitic lava effusion | Akito Tsuchiya |
| 09:45 - 10:00 | SVC31-10 | Volatile mass balance and permeability of conduit magmas leading to Vulcanian explosions at Sakurajima Volcano, Japan | Michihiko Nakamura |
| 10:00 - 10:15 | SVC31-11 | Crystallization model regarding relationship between magma supply rate and CSD during the historical eruptions of Sakurajima volcano | Atsushi Toramaru |
| 10:15 - 10:30 | SVC31-12 | Numerical study of effusive eruption based on coupled unsteady simulations of dike deformation and conduit flow | Sora Nishikawa |
| Oral Presentation May 29 AM2 | |||
| 10:45 - 11:00 | SVC31-13 | Stratigraphic facies and eruptive sequence of the 12.8 cal ka BP Satsuma Eruption of Sakurajima Volcano | Tatsuya Konoo |
| 11:00 - 11:15 | SVC31-14 | Eruptive sequence and eruption style in the 12th Century eruption of the Asama-Maekake volcano | Maya Yasui |
| 11:15 - 11:30 | SVC31-15 | Dynamics of geyser eruption based on a numerical simulation of two-phase flow in a wellbore-aquifer system | Ayuta Tsuge |
| 11:30 - 11:45 | SVC31-16 | Observations of SP and tilt vatiations at Kibedani Geyser, Shimane Prefecture: Relationship between groundwater flow and eruption activity | Harutou Tanabe |
| Presentation No | Title | Presenter |
|---|---|---|
| Poster Presentation May 29 PM3 | ||
| SVC31-P01 | Magma ascent and pyroclastic flow formation in 7.6 ka Mashu eruption :Insights from textural and synchrotron analyses of pumice deposit | Kyohei Sano |
| SVC31-P02 | Analysis of bubble and crystal distributions in Unzen lava: Do large bubbles always appear with crystals? | Konan Saito |
| SVC31-P03 | Permeability evolution during the ductile-brittle transition in crystal- and gas bubble-bearing magma | Takeru Ohata |
| SVC31-P04 | A tensile deformation experiment of analog low-viscosity magma containing bubbles and crystals: visual observation and force measurement of fracture behavior | Sayaka Oda |
| SVC31-P05 | Interstitial melt connectivity in the mushy gabbroic xenoliths of Fuji 1707 eruption | Kotone Nishigaya |
| SVC31-P06 | Plagioclase ultraphyric basalts of the Abor magmatic complex: implications for a plumbing system at the eastern Himalaya | Govind Oinam |
| SVC31-P07 | Pre-eruptive process of the smallest caldera-forming eruption: a case study of Ikeda caldera, South Kyushu, Japan | Sato Natsuhiko |
| SVC31-P08 | Development status of Quantitative Volcanic Ash concentration information | Taisei Furukawa |
| SVC31-P09 | Investigation into the magma intrusion pathways of Mt. Usu using three-dimensional numerical model. | Yuzuki Onishi |
| SVC31-P10 | Forward modeling of source mechanisms for explosion earthquakes at Sakurajima volcano | Takahisa Hasegawa |