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Nepal landslide monitoring results to be published in real time

Slope monitoring data being gathered from 10 areas at risk of landslide following the earthquakes in Nepal is now being streamed in real time to a website via graphing software as part of a project being funded by Natural Environment Research Council (NERC).

“The overall aim is to determine how hillslopes damaged during the 2015 Nepal earthquakes progressively deform in response to stress perturbations resulting from precipitation and continuing seismicity,” said the research team, which is being led by Durham University lecturer in geography Nick Rosser.

The instruments have only recently been installed so data is currently mostly noise but the research team hope to be able to identify daily patterns and gain understanding into the importance of these in predicting failure, especially in the final stages of the monsoon season.

“Our data will most importantly quantify the relationship between stress perturbations and landsliding, but will also provide ground-truth for remotely-sensed deformation,” said the research team.

At each site a high precision extensometer has been installed to measure ground crack opening, while slope-scale seismicity will be recorded by high-precision three-axis accelerometers. From the results derivative values will be obtained to capture slope response to continuing seismicity, and to add directional information to the extensometer data. Rainfall data will also be collected.

Readings from the instrumentation will be logged at 10 minute intervals and streamed live to the project website.

The monitoring equipment will remain installed in Nepal, maintained by the National Society for Earthquake Technology-Nepal at the end of the project to continue collating this long-term data set.

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