Groundwater fluctuations during a debris flow event in Western Norway – triggered by rain and snowmelt

Video in TIB AV-Portal: Groundwater fluctuations during a debris flow event in Western Norway – triggered by rain and snowmelt

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Title
Groundwater fluctuations during a debris flow event in Western Norway – triggered by rain and snowmelt
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CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Release Date
2021
Language
English
Production Year
2020-2021
Production Place
Sogndal

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Subject Area
Abstract
Pore pressure is important for the trigger of debris slides and flows. But how, exactly, does the pore pressure vary just before a slide happens? We drilled and installed a piezometer 1.6 m below the ground in a hillslope susceptible to debris flows in western Norway and measured pore pressure and water temperature through the years 2010–2013. We found the largest anomaly in our groundwater data during the storm named Hilde in November in 2013, when a debris flow happened in this slope.
Keywords Pore water pressure Piezometer Debris flow Rainstorm Snowmelt Western Norway Landslide
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