Asset Details
Do you wish to reserve the book?
Supercritical fluid flow through permeable window and phase transitions at volcanic brittle–ductile transition zone
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Supercritical fluid flow through permeable window and phase transitions at volcanic brittle–ductile transition zone
Do you wish to request the book?
Supercritical fluid flow through permeable window and phase transitions at volcanic brittle–ductile transition zone
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Supercritical fluid flow through permeable window and phase transitions at volcanic brittle–ductile transition zone
2025
Overview
Hydrothermal fluid migration and supercritical phase transitions around the brittle–ductile transition are key to understanding volcanic activity and geothermal energy, but it remains challenging due to limited subsurface imaging. Here we conducted active-source seismic surveys at Kuju volcano, Japan, applying extended common-reflection-surface analysis to image magma-related and hydrothermal structures. We further estimated earthquake hypocenters, focal mechanisms, and seismic velocity. A continuous horizontal reflector could indicate a low-permeability seal confining supercritical fluids, while a low-amplitude reflection zone reveals fractures disrupting the seal. This permeable window, located at the magma margin, coincides with earthquake clusters of various focal mechanisms, suggesting upward fluid migration. A plume-shaped zone with low P-wave and S-wave velocity ratio (Vp/Vs) above the permeable window indicates thermally-altered formations and gas release from phase transitions. These results provide 3D visualization of the interplay among trapped supercritical fluid, its migration through permeable window, and related seismicity near the brittle-ductile transition.
The Kuju volcanic area’s shallow magma margin features a low-amplitude reflection zone that allows pressurized fluids to migrate upward, causing diverse earthquake clusters with complex mechanisms, according to analysis of magma-related and hydrothermal structures in the Kuju volcanic area in Japan.
