NEAR FAULT VELOCITY PULSE ESTIMATION: THE CEPHALONIA FEB. 3, 2014 EARTHQUAKE (M6.0)

PDF
Published: Jul 27, 2016
DOI: https://doi.org/10.12681/bgsg.11858
Keywords:
near fault velocity pulse strong motion site effects Cephalonia
N. Theodoulidis
Institute of Engineering Seismology and Earthquake Engineering
I. Grendas
Aristotle University of Thessaloniki, Department of Geology
Abstract

Near fault ground motions can be significantly different than those further away from the seismic source. Within the near fault zone ground motions are drastically influenced by the rupture mechanism, the direction of rupture propagation relative to the site and possible permanent displacement related to the fault slip. During the past two decades several sophisticated theoretical or/and empirical methods have been proposed to simulate near fault motion requiring input parameters that hardly can be provided with accuracy, leading thus to extended parametric studies and uncertainties. In this paper, a simple but effective analytical model that mathematically represents near fault ground motions (Mavroeidis and Papageorgiou, 2003) is applied and tested in the case of Cephalonia, Feb. 3, 2014 earthquake (Μ6.0). Its validity and reliability are examined and an effort to distinguish source and possible site effects is attempted for the town of Lixouri (LXR1 accelerograph) where the highest damage levels was observed.

Article Details
  • Section
  • Seismology
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.

Downloads
Download data is not yet available.
References
Boncori, J.P.M., Papoutsis, I., Pezzo, C., T., Atzori, S., Ganas, A., Karastathis, V., Salvias, S.,
Kontoes, C. and Antonioli, A., 2015. The February 2014 Cephalonia Earthquake (Greece):
D Deformation Field and Source Modeling from Multiple SAR Techniques, Seismol. Res.
Lett., 86-1, 124-137.
Boore, D., Stewart, J., Seyhan, E. and Atkinson, G., 2014. NGA – West2 Equations for Predicting PGA,
PGV, and 5% Damped PSA for Shallow crustal Earthquakes, Earthquake Spectra, 30, 1057-
Bouchon, M., 1979. Predictability of ground displacement and velocity near an earthquake fault: An
example-The Parkfield earthquake of 1966, J. Geophys. Res., 84, 6149-6156.
Geopsy software, www.geopsy.org.
Hatzidimitriou, P., Papazachos, C., Kiratzi, A. and Theodulidis, N., 1993. Estimation of attenuation
structure and local earthquake magnitude based on acceleration records in Greece,
Tectonophysics, 217, 243-253.
Lermo, J. and Chavez-Garcıa, F.J., 1994. Site effect evaluation at Mexico City: dominant period and
relative amplification from strong motion and microtremor records, Soil Dyn. & Earthq.
Eng., 13, 413-23.
Louvari, E., Kiratzi, A. and Papazachos, B.C., 1999. The Cephalonia Transform Fault and its
extension to western Lefkada Island (Greece), Tectonophysics, 308, 223-236.
Mavroeidis, G. and Papageorgiou, A., 2003. A Mathematical Representation of Near- Fault Ground
Motions, Bull. Seismol. Soc. Am., 93, 1099-1131.
MATLAB and Statistics Toolbox Release v8.0.0, 2012. The MathWorks, Inc., Natick,
Massachusetts United States.
Nakamura, Y., 1989. A method for dynamic characteristics estimation of subsurface using microtre
mor on the ground surface, QR Railway Tech. Res. Inst., 30, 25-33.
Rodriguez-Marek, A., 2000. Near fault seismic site response, PhD Thesis, Civil Engin., University
of California, Berkeley, 451 pp.
SESAME Project, 2004. Deliverable D23.12: Guidelines for the implementation of the H/V spectral
ratio technique on ambient vibrations measurements, processing and interpretation, available
from the web site- http://sesame-fp5.obs.ujf-grenoble.fr/Papers/HV_User_Guidelines.pdf.
Theodoulidis, N. and Bard, P.-Y., 1995. Horizontal to vertical spectral ratio and geological
conditions: an analysis of strong motion data from Greece and Taiwan (SMART-1), Soil Dyn.
& Earthq. Eng., 14, 177-197.
Theodoulidis, N., Karakostas, C., Lekidis, V., Makra, K., Margaris, B., Morfidis, K., Papaioannou,
C., Rovithis, G., Salonikios, T. and Savvaidis, A., 2016. The Cephalonia, Greece, Jauary 26
(M6.1) and February 3, 2014 (M6.0) earthquakes: Near fault ground motion and effects on
soil & structures, Bull. Europ. Earthq. Eng., 14, 1-38.
Scordilis, E.M., Karakaisis, G.F., Karakostas, B.G., Panagiotopoulos, D.G., Comninakis, P.E. and
Papazachos, B.C., 1985. Evidence for transform faulting in the Ionian Sea. The Cephalonia
island earthquake sequence of 1983, Pure Appl. Geophys, 123, 388-397.
Somerville, P., 2003. Magnitude scaling of the near fault rupture directivity pulse, Physics Earth &
Planet. Int., 137, 201-212.
Most read articles by the same author(s)