Assessment of seismic sources and capable faults through hierarchic tectonic criteria: implications for seismic hazard in the Levant
Item
Title (Dublin Core)
Assessment of seismic sources and capable faults through hierarchic tectonic criteria: implications for seismic hazard in the Levant
Description (Dublin Core)
<p>We present a methodology for mapping faults that constitute a potential
hazard to structures, with an emphasis on ground shake hazards and on
surface rupture nearby critical facilities such as dams and nuclear power
plants. The methodology categorises faults by hierarchic seismo-tectonic
criteria, which are designed according to the degree of certainty for recent activity and the accessibility of the information within a given region. First, the instrumental seismicity is statistically processed to obtain the gridded seismicity of the earthquake density and the seismic moment density parameters. Their spatial distribution
reveals the zones of the seismic sources, within the examined period. We
combine these results with geodetic and pre-instrumental slip rates,
historical earthquake data, geological maps and aerial photography to define and categorise faults that are likely to generate significant earthquakes (<span class="inline-formula"><i>M</i>≥6.0</span>). Their mapping is fundamental for seismo-tectonic modelling and for probabilistic seismic
hazard analyses (PSHAs). In addition, for surface rupture hazard, we create a database and a map of Quaternary capable faults by developing criteria according to the regional stratigraphy and the tectonic configuration. The relationship between seismicity, slip dynamics and fault activity through time is an intrinsic result of our analysis that allows revealing the dynamic of the deformation in the region. The presented methodology expands the ability to differentiate between subgroups for planning or maintenance of different constructions or for research aims, and it can be applied in other regions.</p>
hazard to structures, with an emphasis on ground shake hazards and on
surface rupture nearby critical facilities such as dams and nuclear power
plants. The methodology categorises faults by hierarchic seismo-tectonic
criteria, which are designed according to the degree of certainty for recent activity and the accessibility of the information within a given region. First, the instrumental seismicity is statistically processed to obtain the gridded seismicity of the earthquake density and the seismic moment density parameters. Their spatial distribution
reveals the zones of the seismic sources, within the examined period. We
combine these results with geodetic and pre-instrumental slip rates,
historical earthquake data, geological maps and aerial photography to define and categorise faults that are likely to generate significant earthquakes (<span class="inline-formula"><i>M</i>≥6.0</span>). Their mapping is fundamental for seismo-tectonic modelling and for probabilistic seismic
hazard analyses (PSHAs). In addition, for surface rupture hazard, we create a database and a map of Quaternary capable faults by developing criteria according to the regional stratigraphy and the tectonic configuration. The relationship between seismicity, slip dynamics and fault activity through time is an intrinsic result of our analysis that allows revealing the dynamic of the deformation in the region. The presented methodology expands the ability to differentiate between subgroups for planning or maintenance of different constructions or for research aims, and it can be applied in other regions.</p>
Creator (Dublin Core)
M. Sharon
A. Sagy
I. Kurzon
S. Marco
M. Rosensaft
Subject (Dublin Core)
Environmental technology. Sanitary engineering
TD1-1066
Geography. Anthropology. Recreation
G
Environmental sciences
GE1-350
Geology
QE1-996.5
Publisher (Dublin Core)
Copernicus Publications
Date (Dublin Core)
2020-01-01T00:00:00Z
Type (Dublin Core)
article
Identifier (Dublin Core)
10.5194/nhess-20-125-2020
1561-8633
1684-9981
https://doaj.org/article/ab6c287d20bf42c798fd1d1b351ef1b2
Source (Dublin Core)
Natural Hazards and Earth System Sciences, Vol 20, Pp 125-148 (2020)
Language (Dublin Core)
EN
Relation (Dublin Core)
https://www.nat-hazards-earth-syst-sci.net/20/125/2020/nhess-20-125-2020.pdf
https://doaj.org/toc/1561-8633
https://doaj.org/toc/1684-9981
Provenance (Dublin Core)
Journal Licence: CC BY