We are seeking motivated young MSc students for a PhD position available at CEREGE within the Marie Sklodowska-Curie Doctoral Network “TREAD: daTa and pRocessess in sEismic hAzarD” on « Linking fault damage zone mechanical and geometrical characteristics with fault seismic history ».
Objectives: The
objective of this PhD is to study the links between coseismic slip
distribution, fault segmentation and associated damage zones. Indeed
recent studies suggest that such large variations in slip are possibly
due to the presence of barrier zones that stop the rupture. The
knowledge accumulated at University of Padova (Italy) on damage zones
distribution and their mechanical properties on one hand, and the
experience in mapping active faults and acquiring their seismic history
gained by CEREGE over the last 10 years, will allow the PhD student to
study those links. In particular, the surface expression of the fault
based on the quantification of cumulative displacement (e.g. faceted
spurs, fault scarps, geological displacement) along with the accurate
mapping of the active portions of the fault will allow him/her to relate
slip distribution with fault segmentation, damage and their link with
inherited structures. Several sites will be selected on faults
displaying different damage zone characteristics and fault cumulative
displacement (e.g. the Vado di Corno fault, the Roccapreturo fault) in
the Apennines, to quantify geometrical characteristics such as fault
length, specific geometrical features in the fault surface expression
such as bends, steps of a few km, maximum cumulative displacement,
thickness of damage zone, degree of fracturation, specific mechanical
properties, using high resolution topography based on digital elevation
model acquired from Lidar drone or photogrammetry. Moreover, the fault
slip-rate and, if the sites are suitable, its seismic history, will be
estimated with 36Cl fault scarp dating and dating of offset markers.
Those data will allow the PhD student to unravel how fault maturity,
coseismic rupture extent and clustering (coefficient of variation
between slip rate and earthquake occurrence) are linked.
PhD should start between September and November 2023.
See the details to apply on this link.
Deadline for applications: April 30, 2023
