Earthquake-prediction research in a natural laboratory
PRENLAB
EC project, Environment and Climate 1994-1998
Contract EENV4-CT96-0252
Proposal PL950257, 2.3.2 Seismic risk

Workshop in Paris October 24-25 1997

Earthquake-Prediction Research in a Natural Laboratory

Multidisciplinary European technology and science are applied in a common action aimed at progress in earthquake prediction research and at reducing seismic risk. The questions are where, how and when large earthquake ground motions will occur. Answers are sougth by studying the physical processes and conditions leading to large earthquakes.

A project reviewing workshop will be held in Paris, October 24-25, 1997. The location of the meeting is:

University P. & M. Curie
Department of Geotectonics
Tower 26-0, 1st floor, room "Leon Lutaud"
4, place Jussieu
75005 Paris (France)

Agenda

08:45-09:00 Introduction:

F. Bergerat, R. Stefánsson.

09:00-11:00 The Multidisciplinary Project

The PRENLAB approach in earthquake prediction research, multidisciplinary approach, collection of data, common databases, etc.
Convenor: Ágúst Guđmundsson

Halldórsson, P., Einar Kjartansson, Gunnar Guđmundsson og Ţórunn Skaftadóttir General seismic database for Iceland

Rögnvaldsson, S. Th., Reynir Böđvarsson and Ragnar Slunga The use of waveform correlation in automatic earthquake analysis.

Böđvarsson, R., Ragnar Slunga Implementation of SIL technology in a mini seismic array in geothermal field in NW Iceland.

Slunga, R., Reynir Bodvarsson and Bjorn Lund Microearthquakes, fault plane solutions, shear deformations and rock stresses.

Belardinelli M.E., Bonafede M., and Gudmundsson A. Inferences on the reginal stress field from the study of secondary earthquake fractures.

Antonioli A., Piersanti A., Spada G., and Bonafede M. Time-dependent stress field associated with rift dynamics.

Bonafede M., and Rivalta E. Stress modifications produced by a crack crossing the interface between two elastic media.

11:00-11:15 Coffee break

11:15-12:30 Húsavík earthquake

On the predictability of a destructive earthquake at Húsavík, The Húsavík Flatey fault, seismicity, Tjörnes fracture zone tectonics, mapping of faults, seismicity, deformation.
Convenor: Stuart Crampin

Stefánsson, R., Páll Halldórsson, Sigurđur Rögnvaldsson and Gunnar B. Guđmundsson. Húsavík earthquakes and their relation to seismicity, fault movements and rifting epizodes.

Rögnvaldsson, S. Th., Ágúst Guđmundsson and Ragnar Slunga Seismotectonics of the Tjörnes Fracture Zone.

Gudmundsson A. Faulting and fluid transfer in Tjörnes Fracture Zone

Villemin T. Detailled analysis of fissure swarms in North Iceland : growth processes and relation between rift and transform kinematics.

12:30-14:00 Lunch

14:00-15:15 Earthquake hazard estimation near Reykjavík.

On the probability of a large earthquake in the Bláfjöll mountains area, relations to activity in the Hengill fissure swarm, seismicity, fault mapping, deformation studies.
Convenor: Frank Roth

Stefánsson, R., Páll Halldórsson On the possibility of a magnitude 7 earthquake in the Bláfjöll area, near Reikjavík.

Rögnvaldsson, S. Th., Gunnar Guđmundsson, Ragnar Stefánsson and Ragnar Slunga Recent seismicity in the Hengill volcanic area, SW Iceland.

Feigl K. Satellite Radar Interferometry in the Southern Iceland Seismic Zone : a status report.

Sigmundsson F. Satellite Radar Interferometry in Iceland : Results from the Reykjanes Peninsula and the Krafla volcanic system.

Tryggvason, A., Sigurđur Th. Rögnvaldsson and Ólafur G. Flóvenz 3D imageing of P and S wave velocity structure beneath SW Iceland.

15:15-15:30 Coffee break

15:30-18:00 South Iceland seismic zone

Earthquake hazard estimations, the mechanism of large earthquakes, interconnection between earthquakes in the zone, tectonical features, mapping of faults, deformation.
Convenor: M. Bonafede

Bergerat F., and Angelier J. The South Iceland Seismic Zone - part 1 : Neotectonic evidence from field studies of recent faulting.

Angelier J. , and Bergerat F. The South Iceland Seismic Zone - part 2 : Stress field and mechanisms of seismogenic faults.

Henneberg K., Roth F., Stefansson V., and Sigvaldsson Repeated Logging at Borehole Nefsholt, inside the SISZ : First Results.

Crampin S. Monitoring deformation with seismic shear-wave splitting in Iceland.

16:30-16:45 Coffee break

Stefánsson, R., Kristján Ágústsson. Continuous measurements of strain and hydrological effects in the SISZ.

Halldórsson, P., Ragnar Stefánsson, Gunnar Guđmundsson. The main seismic characteristics of the south Iceland seismic zone.

Stefánsson, R., Kristján Ágústsson and Páll Halldórsson. The dual mechanism model revived in light of the observed fluid intrusion following the the Vatnafjöll earthquake sequence of 1987.

Roth F. Stress Field Models for South Iceland Compared to Seismicity.

Sigmundsson F. Semi-continuous GPS measurements of crustal movement in the South Iceland Seismic Zone.

Saturday October 25

09:00-12:00 Plans for final papers and final report.

Focussing work through cooperative actions, interchange of results, common papers etc.
Convenor: Ragnar Stefánsson

URL: http://www.vedur.is/ja/prenlab/symp Last update: Oct 23 1997. eik@vedur.is