Publication Date:
2017-04-04
Description:
The project Retreating-trench, extension, and accretion tectonics, RETREAT, is a
multidisciplinary study of the Northern Apennines (www.geology.yale.edu/RETREAT/index.htm),
is funded by the United States National Science Foundation (NSF) in collaboration with the Italian
Istituto Nazionale di Geofisica e Vulcanologia (INGV) and the Grant Agency of the Czech
Academy of Sciences (GAAV). The main goal of RETREAT is to develop a self-consistent
dynamic model of syn-convergent extension, using the Northern Apennines as a natural laboratory.
In the context of this project a passive seismological experiment was deployed in the fall of 2003
for a period of three years. RETREAT seismologists aim to develop a comprehensive
understanding of the deep structure beneath the Northern Apennines, with particular attention on
inferring likely patterns of mantle flow. Specific objectives of the project are the crustal and
lithospheric thicknesses, the location and geometry of the Adriatic slab, and the distribution of
seismic anisotropy laterally and vertically in the lithosphere and asthenosphere. The project is
collecting teleseismic and regional earthquake data for 3 years. This contribution describes the
RETREAT seismic deployment and reports on key results from the first year of the deployment.
We confirm some prior findings regarding the seismic structure of central Italy, but our
observations also highlight the complexity of the Northern Apennines subduction system.
Description:
Submitted
Description:
open
Keywords:
Apennines:
;
Seismic
;
04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
manuscript
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