[Geoinfo] Fwd: PostDoc position in Seismology (ambient noise) at IPGP, Paris

[Patricia Alvarado]

>>Forwarded on behalf of:
Florent Brenguier
Insititut de Physique du Globe de Paris
brenguier en ipgp.fr


These recent years, pioneer works have shown that it is possible to
reconstruct the seismic Green’s function between two sensors from the
cross-correlation of ambient seismic noise. This discovery has been
widely employed to image the structure of the Earth’s interiors.
A similar approach has been also developed to measure temporal changes
of seismic properties with an increased accuracy. The application of
this approach to volcanic and tectonic domains has shown that it is
possible to detect seismic velocity changes with an accuracy of 0.01 %
and a temporal resolution as small as 1 day. However one limitation of
this method comes from the difficulty to precisely localize and
characterize these changes in space.
The goal of the expected research will be to improve the temporal and
spatial resolution of these monitoring methods. This work will be held
at IPGP (Paris) in close collaboration with physicists from Institut
Langevin, Paris. We will in particular look forward to adapt the
principles of time reversal and beamforming developed at the
laboratory scale to the volcanic and tectonic scales. The researcher
student will work with numerical modeling tools as well as with real
data from Piton  de la Fournaise Volcano (Réunion island) and Japan.
This appointment will start as soon as possible and will last 24
months. The postdoctoral researcher will be working at Institut de
Physique du Globe de Paris and Institut Langevin, located in the same
building in Paris city center and also in close collaboration with
ISTerre (Grenoble). To apply or to get more information, contact
Nikolai Shapiro (nshapiro en ipgp.fr), Julien De Rosny
(julien.derosny en espci.fr) and Florent Brenguier
(florent.brenguier en ujf-grenoble.fr).

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