Thread: Fwd: ESC 2018: Session S22 Advances in understanding earthquakes in regions of distributed deformation: from field studies to seismic hazard assessment

Started: 2018-03-06 01:24:28
Last activity: 2018-03-06 01:24:28
Topics: Other Meetings
Dear colleagues,

We would like to draw your attention to session ESC2018 session S22: Advances in understanding earthquakes in regions of distributed deformation: from field studies to seismic hazard assessment.

ESC2018 (http://www.escmalta2018.eu/page/home) will take place in beautiful Malta, 2-7 September 2018, and will be preceded by a week-long Young Seismologists Training Course (YSTC) dedicated to Array Seismology.

The deadline for abstract submission is 31/March/2018.

We look forward to receiving your abstracts and meeting you in Malta,

Susana Custodio, Michele Carafa, Marta Neres, Laurentiu Danciu, Oliver Heidbach, Pierre Arroucau

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S22 Advances in understanding earthquakes in regions of distributed deformation: from field studies to seismic hazard assessment

Conveners:
Susana Custódio, IDL, Univ. of Lisbon, Portugal,sicustodio<at>fc.ul.pt<sicustodio<at>fc.ul.pt>
Michele Carafa, INGV, Italy, michele.carafa<at>ingv.it<michele.carafa<at>ingv.it>
Marta Neres, IDL, IPMA, Portugal, neresmarta<at>gmail.com<neresmarta<at>gmail.com>
Laurentiu Danciu, ETH, Switzerland, laurentiu.danciu<at>sed.ethz.ch<laurentiu.danciu<at>sed.ethz.ch>
Oliver Heidbach, GFZ, Potsdam, heidbach<at>gfz-potsdam.de<heidbach<at>gfz-potsdam.de>
Pierre Arroucau, DIAS, Ireland / EDF, France, parroucau<at>cp.dias.ie<parroucau<at>cp.dias.ie>

The theory of plate tectonics explains the occurrence and recurrence time of strong earthquakes along discrete boundaries. However, large regions of spread deformation are observed in nature, both around plate boundaries and in orogens. Furthermore, seismicity in regions with very low strain rates show that the interiors of plates also deform. Earthquakes in regions of distributed and low deformation can also reach high magnitudes, but in contrast to plate boundaries it is not clear if cyclic behavior applies and if yes how recurrence times can be estimated with the classical approaches and concepts. The significant increase of high-density data collected in past years resulted in high-quality data sets of hypocentral distribution, focal mechanisms, crustal stress pattern and GPS surface deformation. These can be used for an integrated approach to understand the earthquake occurrence away from the well-known plate boundaries. Fundamental questions that have to be addressed concerning the recognition of seismogenic faults and the occurrence of earthquakes in these regions include: Can we identify faults that take up deformation in regions of distributed deformation? Can the tectonic and possibly seismogenic signal be singled out for each fault? Can we relate the characteristics of fault networks to earthquake potential, and subsequently to seismic hazard assessment? What is the role of fault interaction in long-term seismicity forecasts? How can the time-space variability of earthquakes in these regions be modeled? How can we integrate GPS data and physics-based models in the future seismic hazard assessment? In this session we welcome contributions that improve our understanding of seismogenesis and seismic hazard in regions of distributed and low deformation. We welcome theoretical, observational, and numerical contributions from a broad range of disciplines, including field geology, structural geology, seismology, geodesy, rheology, crustal stress, geodynamics and seismic hazard assessment.
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