The active Dead Sea Rift fault zone: a seismic wave-guide

Wust-Bloch, G. H.

doi:10.5194/smsps-2-11-2002

Cited by 5 publications

(7 citation statements)

References 33 publications

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“…164, 2007 Parameterization of an Attenuation Relation for the Dead Sea Area 25 BEN-AVRAHAM, 1996;GINZBURG and BEN-AVRAHAM, 1997). The DSB is a 15 km by 100 km, N-S elongated structure around which basin-related effects have been observed in damage patterns of past earthquakes (SIEBERG, 1932;VERED and STRIEM, 1977;LEVY et al, 2000;WUST-BLOCH, 2002). These observations corroborate simulated ground motions computed for the 1927 (M L = 6.2) Jericho earthquake , which show that wave focusing is significant.…”

Section: Model and Simulationssupporting

confidence: 75%

“…Basin effects have been observed in a variety of settings, whether in seismic records (DAVIS et al, 2000;KAWASE, 1996) or damage patterns (TERTULLIANI, 2000;WUST-BLOCH, 2002). They have been extensively modeled for some specific areas, such as the Los Angeles Basin (e.g., OLSEN, 2000) or the Euroseistest site (e.g., PITILAKIS et al, 1999;MAKRA et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Parameterization of a Composite Attenuation Relation for the Dead Sea Area Based on 3-D Modeling of Elastic Wave Propagation

Oth

Wenzel

Wust-Bloch

et al. 2007

Pure appl. geophys.

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3-D simulations of elastic wave propagation generated by earthquakes with magnitudes between 5.5 and 7.0 are used to parameterize strong ground motion attenuation relations for the Dead Sea Rift (DSR) graben structure. The results show that standard attenuation relations with an isotropic distance parameter are inadequate for a graben structure with a deep sedimentary trough. A new strategy is devised for the parameterization of attenuation relations in graben structures by looking at the statistical properties of 53 simulated earthquakes of variable magnitudes located at various sites along the western boundary fault of the DSR graben. An exemplary attenuation relation is designed from the synthetics for the 1 Hz spectral acceleration, modifying the Joyner-Boore-type parametrization by adding coefficients suited for three different source-to-sensor configurations: within the graben, beyond the graben and path unaffected by the graben structure.

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Section: Model and Simulationssupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Parameterization of a Composite Attenuation Relation for the Dead Sea Area Based on 3-D Modeling of Elastic Wave Propagation

Oth

Wenzel

Wust-Bloch

et al. 2007

Pure appl. geophys.

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“…Periods where sediments are not available for study are indicated by gray vertical bars. Bloch, 2002]. The seismite sites in the south (EG, ZA) are farther from the Jordan fault, and disconnected from the Araba/Arava fault.…”

Section: Site Comparisonmentioning

confidence: 99%

Intrabasin paleoearthquake and quiescence correlation of the late Holocene Dead Sea

et al. 2011

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A comprehensive multisite paleoseismic archive of the late Holocene Dead Sea basin (past 2500 years) is established by constructing two age‐depth chronological models of two sedimentary sections exposed at the retreating shores of the modern Dead Sea. Two new paleoseismic study sites studied are the Ein Feshkha Nature Reserve outcrop located at the northern part of the basin and close to an active underwater transverse fault and the east Ze'elim Gully outcrop at the southern part of the basin. Age‐depth regression models are calculated for these sections based on atmospheric radiocarbon ages of short‐lived organic debris calibrated with a Bayesian model. The uncertainties on individual model ages are smaller than 100 years. The new chronological records are compared to a laminae‐counting study of the Ein Gedi core (Migowski et al., 2004) located at the central Dead Sea basin. The Ein Feshkha outcrop yielded the largest number of seismites in the studied time interval (n = 52), while lower numbers of seismites are recovered from the Ze'elim outcrop and Ein Gedi core (n = 15 and 36, respectively). The seismites show no strong dependence on the limnological‐sedimentological conditions in the particular sampling sites (they coappear in both shallow and deep water environments and in different sedimentary facies). During time intervals when the chronologies are comparable it appears that the number of seismites is significantly larger in the northern part of the basin (Ein Gedi and Ein Feshkha). Seismic quiescence intervals are apparent at all three sites from 2nd–4th century A.D. and at 500–150 B.C. at Ze'elim and Ein Gedi. Several synchronous seismites appear in all sections (termed here the intrabasin seismites (IBS)). Among them: 1927, 1293, 1202/1212, 749, 551, 419, and 33 A.D. and 31 and mid‐2nd century B.C. The recurrence time of the IBS from the 2nd century B.C. to the 14th century A.D. is ∼200 years, compared with ∼100 years for all earthquakes. On a diagram of epicentral distance versus magnitude, historic earthquakes that are correlated with IBS plot in a field of high local intensity. The farther and stronger IBS earthquakes require lower local intensities to be recorded. This study demonstrates that a painstaking effort is still needed for unraveling the seismic history of the Dead Sea basin. The results also indicate that such a study will likely be highly rewarding.

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“…(2) Topographic slope -the relation between damage and the underlying topographic slope is found to be significant (e.g., Athanasopoulos et al, 1988;Avni, 1999;Evernden et al, 1973;Wust-Bloch, 2002;Zaslavsky et al, 2000). Moreover, the larger the ratio between the height of the mountain peak above its surroundings to its width, the higher is the amplification (Salamon et al, 2010).…”

Section: Intensity Correctionsmentioning

confidence: 92%

Re-estimating the epicenter of the 1927 Jericho earthquake using spatial distribution of intensity data

Zohar

Marco

2012

Journal of Applied Geophysics

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The active Dead Sea Rift fault zone: a seismic wave-guide

Cited by 5 publications

References 33 publications

Parameterization of a Composite Attenuation Relation for the Dead Sea Area Based on 3-D Modeling of Elastic Wave Propagation

Parameterization of a Composite Attenuation Relation for the Dead Sea Area Based on 3-D Modeling of Elastic Wave Propagation

Intrabasin paleoearthquake and quiescence correlation of the late Holocene Dead Sea

Re-estimating the epicenter of the 1927 Jericho earthquake using spatial distribution of intensity data

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