Scaling of intraplate earthquake recurrence interval with fault length and implications for seismic hazard assessment

1994 ◽  
Vol 21 (24) ◽  
pp. 2637-2640 ◽  
Author(s):  
Randall Marrett
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Recurrence Interval ◽  
Intraplate Earthquake ◽  
Earthquake Recurrence ◽  
Earthquake Recurrence Interval ◽  
Fault Length

A Bayesian Methodology Applied to the Estimation of Earthquake Recurrence Parameters for Seismic Hazard Assessment

2014 ◽  
Vol 30 (7) ◽  
pp. 921-933 ◽  
Author(s):  
Merlin Keller ◽  
Alberto Pasanisi ◽  
Marine Marcilhac ◽  
Thierry Yalamas ◽  
Ramón Secanell ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Earthquake Recurrence ◽  
Bayesian Methodology

Locating fault tips to aid fault length identification: an example from the Gulf of Corinth rift

2020 ◽  
Author(s):  
Jenni Robertson ◽  
Gerald Roberts ◽  
Francesco Iezzi ◽  
Marco Meschis ◽  
Delia Gheorghiu ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Fault System ◽  
Normal Faults ◽  
Probabilistic Seismic Hazard Assessment ◽  
Maximum Magnitude ◽  
Gulf Of Corinth ◽  
Exposure Ages ◽  
Fault Length

<p>Crustal-scale active normal faults dominate seismic hazard in some regions and have been intensely studied. However, the lateral tips of these structures have received relatively little attention in the literature so their geometries are poorly known. This is an important omission because locating the tips of normal faults is vital in order to define fault lengths and calculate maximum expected earthquake magnitudes. Identifying tips will be challenging if their geometries, kinematics and rates of deformation are poorly known. Consequently, incorrectly identified tips and hence fault lengths may contribute to uncertainty in Probabilistic Seismic Hazard Assessment.</p><p>We investigate the geometry, rates and kinematics of active normal faulting in the western tip zone of the South Alkyonides Fault System (SAFS) (Gulf of Corinth, Greece) by detailed fault mapping and fault offset dating using a combination of new <sup>234</sup>U/<sup>230</sup>Th coral ages and in situ <sup>36</sup>Cl cosmogenic exposure ages on wave-cut platforms deformed by faults.</p><p>Our results reveal that there is no clear singular fault tip and that distributed deformation in the tip zone of the SAFS occurs across as many as eight faults arranged within ~700 m across strike, each of which deforms deposits and landforms associated with the 125 ka marine terrace of Marine Isotope Stage 5e. Summed throw-rates across strike achieve values as high as 1.6 mm/yr, values that approach those close to the centre of the crustal-scale fault of 2-3 mm/yr from Holocene palaeoseismology and 3-4 mm/yr from GPS geodesy. Considering the uncertainty in the location of the western tip induced by distributed faulting, the SAFS fault length is uncertain by up to ± 6%, which equates to a total maximum magnitude uncertainty of Mw 0.1.</p><p>The calculated tip displacement gradient summed across parallel faults since 125 ka for the western tip zone of the SAFS is within the upper range compared to data from other normal crustal-scale faults. We discuss stress interaction between the SAFS and a neighbouring along-strike crustal-scale fault as a potential cause of the observed fault complexity and anomalously high throw and investigate this by undertaking Coulomb stress transfer modelling. The results from the study are discussed within the context of fault-based seismic hazard assessment.</p><p> We conclude that identifying the locations of fault tips is challenging. While the results of this study may or may not be typical of other tip zones owing to the interaction, there is a need for further studies that explore the geometry of both non-interacting and interacting fault tip zones.</p>

Probabilistic seismic hazard assessment for the main cities along the continental section of the Cameroon volcanic line

2021 ◽  
Vol 14 (9) ◽  
Author(s):  
Etoundi Delair Dieudonné Ndibi ◽  
Eddy Ferdinand Mbossi ◽  
Nguet Pauline Wokwenmendam ◽  
Bekoa Ateba ◽  
Théophile Ndougsa-Mbarga
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard ◽  
Cameroon Volcanic Line

Probabilistic Seismic-Hazard Assessment in Quito, Estimates and Uncertainties

2014 ◽  
Vol 85 (6) ◽  
pp. 1316-1327 ◽  
Author(s):  
C. Beauval ◽  
H. Yepes ◽  
L. Audin ◽  
A. Alvarado ◽  
J.-M. Nocquet ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard

Seismic hazard assessment using intensity point data

1994 ◽  
Vol 13 (3) ◽  
pp. 219-226 ◽  
Author(s):  
G. Monachesi ◽  
L. Peruzza ◽  
D. Slejko ◽  
M. Stucchi
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Point Data

scholarly journals Preliminary Seismic Hazard Assessment of the Oral and Dental Hospital of Jenderal Soedirman University Indonesia

2017 ◽  
Vol 171 ◽  
pp. 1025-1034 ◽  
Author(s):  
Yanuar Haryanto ◽  
Gathot Heri Sudibyo ◽  
Fransisca Cynthia Angelina Effendi
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Dental Hospital
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