Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 12, issue 1
Articles | Volume 12, issue 1
https://doi.org/10.5194/esurf-12-67-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-12-67-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 1
Research article
 | 
09 Jan 2024
Research article |  | 09 Jan 2024

Field monitoring of pore water pressure in fully and partly saturated debris flows at Ohya landslide scar, Japan

Shunsuke Oya, Fumitoshi Imaizumi, and Shoki Takayama

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Short summary
The monitoring of pore water pressure in fully and partly saturated debris flows was performed at Ohya landslide scar, central Japan. The pore water pressure in some partly saturated flows greatly exceeded the hydrostatic pressure. The depth gradient of the pore water pressure in the lower part of the flow was generally higher than the upper part of the flow. We conclude that excess pore water pressure is present in many debris flow surges and is an important mechanism in debris flow behavior.
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