Seismic hazard in Greece. II. Ground acceleration

Μακροπουλοσ, Κ.; Burton, Paul W.

doi:10.1016/0040-1951(85)90274-4

Cited by 79 publications

(34 citation statements)

References 6 publications

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“…An example for Greece is shown in Figure 5 [18]. This isoacceleration map shows contours of a(0.7, 50) cm s -2, that is the maximum expected value of peak ground acceleration in cm s -2 with 70% probability of not being exceeded in 50 yr.…”

Section: P(x): Earthquake Ground Motion and Shaking Probability At A mentioning

confidence: 99%

“…Annual maxima of peak ground acceleration were then extracted, ranked and then analysed using the Gumbel I Equation (7). Gumbel I is found to give better convergence than Gumbel III when dealing with physical parameters of vibration-like acceleration [ 18] rather than intensity. Adapting Equation (7) gives…”

Section: P(x): Earthquake Ground Motion and Shaking Probability At A mentioning

confidence: 99%

“…5. Fifty year ground accelerations in Greece (after Makropoulos and Burton [18]). The contours give values of a(0.7, 50) cm s-2, that is the acceleration that has a 70% probability of not being exceeded in 50 yr.…”

Section: P(x): Earthquake Ground Motion and Shaking Probability At A mentioning

confidence: 99%

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Pathways to seismic hazard evaluation: Extreme and characteristic earthquakes in areas of low and high seismicity

Burton

1990

Nat Hazards

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The general philosophy of seismic hazard evaluation described here is appropriate for selection of seismic input to regional earthquake engineering codes prior to detailed on-site inspections and geotechnical assessments. Some probabilistic seismic hazard methodologies which can be applied in areas of low and high seismicity, are briefly described to emphasise the main equations with specimen results. Three aspects of hazard assessment are explored by different 'pathways'. These include the analysis of regional earthquake catalogues to obtain magnitude recurrence, particularly using Gumbel extreme value statistics. This is extended to assess ground shaking hazard which is usually sought by earthquake engineers. Thirdly, the concept of earthquake perceptibility is developed, leading to the identification of an earthquake magnitude or type which is characteristic of a region. This 'most perceptible' earthquake is most likely to be felt at any site in a region and provides an earthquake selection criterion which can be used in aseismic design of noncritical structures. Because there are several methods of seismic hazard evaluation, the view is expressed that it is sensible for practical purposes to seek results from different methods or different pathways to the hazard evaluation.

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Section: P(x): Earthquake Ground Motion and Shaking Probability At A mentioning

confidence: 99%

Section: P(x): Earthquake Ground Motion and Shaking Probability At A mentioning

confidence: 99%

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Pathways to seismic hazard evaluation: Extreme and characteristic earthquakes in areas of low and high seismicity

Burton

1990

Nat Hazards

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“…Active neotectonics imply high seismicity with strong earthquake shocks (M=6.0-7.0) and high peak ground accelerations (20-35 %g) in the forearc margins, as well as in the back-arc grabens (basins) of the Aegean Sea (Makropoulos and Burton, 1985;Delibasis et al, 1987;Jackson and McKenzie, 1988).…”

Section: Introductionmentioning

confidence: 99%

Stratigraphy and dating of a large slumping event in the Northern Aegean

Lykousis¹,

Rousakis²,

Pavlakis³

et al. 2018

geosociety

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Continuous seismic (Air-Gun) subbotom profiling in the N.Aegean was revealed a large submarine translational slide. The failure zone is extended from about 300m depth down to 800 m and covers an area of 85 Km2. The mean thickness of the slide reaches about 55 m and an estimated total volume of 4 Km3 of Quaternary sediments have been slided along a distance of 6 to 7 Km. Chronostratigraphic analysis of the acoustic reflectors imply that the slide plane is the muddy layer of late Pleistocene age (170-240 Ka BP). AMS dating of sediment cores provided indications that this major slide event occurred 5 to 6 Ka BP.

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“…Previous studies also comprise assessments of the expected ground-motion in terms of PGA. Makropoulos & Burton (1985) presented values that have a 70 per cent probability of not being exceeded in a given time interval. Over T = 50 and 100 yr, these values are 64 cm s −2 ≈ 0.065g and 72 cm s −2 ≈ 0.073g, respectively, for Heraklion.…”

Section: R E S U Lt S O F T H E S I T E -S P E C I F I C P S H a A N mentioning

confidence: 99%

A seismic hazard scenario for the main cities of Crete island, Greece

Tsapanos

2003

Geophysical Journal International

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S U M M A R YA probabilistic seismic hazard analysis is applied to the sites of the main cities (Chania, Rethymno and Heraklion) of Crete island, Greece, to compute probabilities of exceedance of specified values of peak ground acceleration (PGA) and to estimate maximum possible PGA at each site. The methodology allows the use of historical or instrumental data, or a combination of both. The instrumental part of the data can be divided into subcatalogues with each having an individual minimum threshold magnitude for completeness. Also incorporated into the procedure were recently published maximum possible magnitudes for each site (6.48, 5.21, 7.52 for Chania, Rethymno and Heraklion, respectively) and an attenuation law for shallow seismicity in Greece [ln(PGA) = 3.52 + 0.70M w − 1.14 ln(R 2 + h 2 0 ) 1/2 + 0.12S ± 0.70], where R and h 0 are, respectively, the epicentral distance and focal depth in kilometres, S is 0, 1 or 2 depending on soil conditions and PGA is in units of cm s −2 . The maximum PGA for Heraklion varies from 0.130g (S = 0, rock) to 0.165g (S = 2, soft). All three sites are coastal, and alluvium is the dominant soil type, for which S = 2. Probabilities that a given PGA will be exceeded at least once during time intervals of 1, 5, 25 and 50 yr were also computed. Additionally, maximum PGA values associated with 'design earthquakes' were computed. For earthquakes at epicentral distances of 10 ± 5 km, median values of maximum PGA were 0.23g, 0.09g and 0.42g at Chania, Rethymno and Heraklion, respectively.

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Seismic hazard in Greece. II. Ground acceleration

Cited by 79 publications

References 6 publications

Pathways to seismic hazard evaluation: Extreme and characteristic earthquakes in areas of low and high seismicity

Pathways to seismic hazard evaluation: Extreme and characteristic earthquakes in areas of low and high seismicity

Stratigraphy and dating of a large slumping event in the Northern Aegean

A seismic hazard scenario for the main cities of Crete island, Greece

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