De los datos geológicos a la interpretación de parámetros sísmicos de fallas en contexto de deformación lentaobstáculos y retos
- E. Masana 1
- M. Ortuño 1
- R. Pallàs 1
- J. Ínsua-Arévalo 2
- J. García Mayordomo 3
- C. Canora 4
- O. Gómez-Novell 1
- R. López 1
- G. Khazaradze 1
- J. Bordonau 1
- S. Baize 5
- T. Rockwell 6
-
1
Universitat de Barcelona
info
-
2
Universidad Complutense de Madrid
info
-
3
Instituto Geológico y Minero de España
info
-
4
Universidad Autónoma de Madrid
info
- 5 Inst. de Radioprotection et Sûreté Nucléaire - Seismic Hazard Division (BERSSIN)
-
6
San Diego State University
info
ISSN: 1576-5172
Year of publication: 2021
Issue Title: X Congreso Geológico de España
Issue: 18
Pages: 841
Type: Article
More publications in: Geotemas (Madrid)
Abstract
Paleoseismology allows the characterization of seismogenic faults in high strain rates regions but also in areas with mode- rate rates of deformation like the Iberian Peninsula. There, an important amount of paleoseismic information has been obtai- ned that have allowed the detection of a number of seismic sources and to estimate their seismic potential by constraining some of their seismic parameters, which makes the Seismic Hazard Assessment more realistic. Considering this information, a number of pitfalls and challenges arise, especially in such a moderate strain rates area, and are discussed here. Some issues and questions are: 1) The catalogue of seismic sources only includes the known sources, making the fault map incomplete and SHA uncompleted; 2) How much evidence do we need to properly characterize a paleoearthquake?; 3) How does one account for aseismic behavior?, 4) Do we have complete seismic histories for a specific fault? 5) Do we have long enough seismic histories to characterize the fault behavior? 6) Are slip-rate estimates for a fault comparable or is there a quality factor to weight them? 7) Do the slip rate estimates we have realistically represent the fault behavior?; 8) How do we deal with Maximum magnitude in fault systems? We show examples on how we try to solve some of these new challenges in the Iberian Peninsula.