GTRACE

Dynamics of Terrestrial Gravity Perturbations

Coordinatore	Universita' degli Studi di Urbino Carlo Bo    more  Organization address address: Via Aurelio Saffi 2 city: URBINO postcode: 61029 contact info Titolo: Prof. Nome: Flavio Cognome: Vetrano Email: send email Telefono: +39 0722 304520 Fax: +39 0722 327857
Nazionalità Coordinatore	Italy [IT]
Totale costo	241˙567 €
EC contributo	241˙567 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2013-IIF
Funding Scheme	MC-IIF
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-11-01   -   2016-10-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	Universita' degli Studi di Urbino Carlo Bo  Organization address address: Via Aurelio Saffi 2 city: URBINO postcode: 61029 contact info Titolo: Prof. Nome: Flavio Cognome: Vetrano Email: send email Telefono: +39 0722 304520 Fax: +39 0722 327857	IT (URBINO)	coordinator	241˙567.60

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 Obiettivo del progetto (Objective)

'A new generation of high-precision gravity sensors such as torsion pendulums and atom interferometers, and future concepts for kilometer-scale gravitational-wave (GW) detectors searching for ripples in spacetime from colliding and exploding stars, will make it possible to study gravity perturbations in the frequency range 0.1Hz to 10Hz. These include terrestrial gravity perturbations that are of interest to Earth scientists, but that are considered as noise contribution in GW detectors. The applicant wants to carry out a detailed study of terrestrial gravity perturbations in the above given frequency range. The analysis will include gravity perturbations from fault rupture, and from seismic waves that are predicted to live on interfaces deep inside Earth such as the core-mantel boundary. Numerical simulations will be used to generate full gravity time series based on dynamical models of the sources and of the propagation of the seismic disturbance. This research will provide a completely new approach to understand the first minute of earthquakes. Furthermore, results from the fault-rupture analysis will be used to determine the impact that gravity sensors could have in earthquake-early warning systems. The project will also investigate terrestrial gravity noise in GW detectors with focus on the poorly understood atmospheric perturbations. Infrasound fields, convection and turbulent air flow are all expected to generate significant gravity noise in GW detectors. The goal is to create improved models for atmospheric perturbations partially based on numerical simulations. The results will be used to develop strategies to mitigate this type of gravity noise in GW detectors. The outcome of this research will have great impact on future developments of ground-based GW detection.'