Thread: URGENT Hiring: PhD position in Norway within the European network EnvSeis - Seismological detection of rockslides

Started: 2022-10-27 11:11:19
Last activity: 2022-10-27 11:11:19

Environmental seismology for detection of rockslide activity in Norway

*Description*:

Active rockslides occur in high mountain terrain where multiple surface
processes including rockslides, snow avalanches, rack fall, and rock
glacial creep are coexisting and are primarily driven by geological
processes and climate change. Rockslide activity is manifested by the
failure process at depth as well as rock fall activity at its surface.
Precise localization of the seismic source and its characteristics is
thus essential to use environmental seismology to better characterize
the rockslide activity in its three dimensions. This is especially
applicable at depths where surface monitoring systems have no access
to. Characterization of seismic signals from rockslide processes with
different failure characteristics will be employed on selected sites in
northern and western Norway. Comparison of seismic signals with
monitoring data of the rock slope obtained from satellite-based InSAR
with a temporal resolution of 6 days (SENTINEL data) and environmental
data (precipitation, rainfall) from weather stations will allow a better
understand of the seasonal impacts of meteorological conditions on the
rockslide activity. Data from the site in western Norway was collected
over the past two years. Two additional sites will be instrumented in
northern Norway in this project, where 28 sites with important
post-glacial deformation exist. Some of those are among those with the
highest deformation rates in Norway today. Some of the sites are
instrumented with corner reflectors that enable for year-round
monitoring of surface deformation. This guarantees deformation
monitoring of the rockslide all year round, making the area an ideal
natural laboratory to better understand deep-seated rockslide activity.

This work package thus aims at training seismic signal analyses on
monitored slopes (relating seismological signals to displacement rates)
during varying environmental conditions throughout the year.

The goal of the project is to develop a method to detect rockslide
fracture processes with seismological tools to allow:

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The localization of the rockslide process

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The classification of the rockslide process

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The quantification of the rockslide process

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Link to the NTNU institution advertisement:
https://www.finn.no/job/fulltime/ad.html?finnkode=276604808

*Keywords*: rockslides, rock fall, seismic waves, environmental
conditions, InSAR

*Host institute*:Norwegian University of Science and Technology
https://www.ntnu.no/igp/institutt-for-geovitenskap-og-petroleum, Norway

*Supervisors*: Reginald Hermanns (NTNU), Gökhan Aslan (NGU)

*Co-supervisor:* Eric Larose (UGA, France)

*Collaborations*: During the project, close collaborations are
envisaged with Volker Oye (NORSAR) and other institutions participating
in the EnvSeis project dealing with landslide processes.

_*Closing date for application: 05/11/22*_
17:23:08 v.01697673