Strong ground acceleration seismic hazard in Greece and neighboring regions

Burton, Paul W.; Xu, Yebang; Tselentis, G‐Akis; Sokos, Efthimios; Aspinall, Willy

doi:10.1016/s0267-7261(02)00155-0

Cited by 34 publications

(12 citation statements)

References 30 publications

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“…The most suitable statistical approach for the available sample is the theory of extreme values which was introduced by Gumbel (1958) and has extensively been applied to seismic hazard problems (Makropoulos, 1978;Burton, 1979;Makropoulos and Burton, 1985a, b;Tsapanos and Burton, 1991;Burton et al, 2003;Ozturk et al, 2008). The advantage of the applied methodology in the case of the present study is that only an earthquake catalogue is used.…”

Section: Seismic Hazard Assessmentmentioning

confidence: 99%

“…This area is close to the epicenter of the M s = 5.4 earthquake that took place on 25 October 1984 during the Asomata reservoir initial filling. The 1995 event caused significant damage to parts of Kozani and Grevena cities and to a number of villages located between them (Carydis et al, 1995;Lekkas et al, 1996). Approximately 5000 houses were severely damaged.…”

Section: Introductionmentioning

confidence: 99%

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Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (Ms = 6.5, NW Greece)

Pavlou

Κaviris

Chousianitis

et al. 2013

Nat. Hazards Earth Syst. Sci.

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Abstract. Seismic hazard assessment and seismicity changes are investigated in the Kozani-Grevena area, at the western margin of internal Hellenides in NW Greece. The region is of great interest, since it was characterized by very low seismic activity until 1995, when the "unexpected" Kozani-Grevena earthquake (M s = 6.5) occurred. This event is of significant importance for Greece, since it, along with the 1999 Athens earthquake, initiated the modification of the Greek Building Code. In order to detect any seismicity changes, the seismicity of the region was divided into three time windows: the first up to 1973, the second from 1900 to 1994 and the third covering the entire instrumental period.For the above mentioned time windows, seismic hazard assessment was performed using the extreme values method. The results indicate an increase of the peak ground acceleration (PGA) values after the impoundment, with the exception of the area in the vicinity of the NE edge of the Dam. Before the occurrence of the 1995 event, the epicentral region also exhibited higher PGA values than before the impoundment. The most significant increase in PGA values is observed SE of the Polyphyto artificial lake, where the largest values are observed for the second and the third period. The coincident increase in the number of earthquakes and in the PGA values may be attributed to the impoundment of the Polyphyto Dam.The maximum expected magnitude is calculated by the extreme values method and Gumbel's third asymptotic distribution. The results reveal similar values of maximum expected magnitudes (M max = 6.5), independent of the seismicity rate, indicating that the 13 May 1995 earthquake was not an "unexpected" event, since the magnitude of an oncoming earthquake depends mainly on the tectonics of the region and the characteristics of the active faults.

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Section: Seismic Hazard Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (Ms = 6.5, NW Greece)

Pavlou

Κaviris

Chousianitis

et al. 2013

Nat. Hazards Earth Syst. Sci.

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“…Among these, the NTP model is judged to be most reasonable because it is designed explicitly for Greek seismicity and its results are quite similar to the NEAK seismic estimation (Burton et al, 2003b). Our common estimation suggests that there are three main zones likely to be detected within the Shield regional working area.…”

Section: Discussionmentioning

confidence: 58%

“…Equation (17b) is calculated with depth control using r 2 = d 2 + h 2 (r is slant distance to the source using focal depth h; there is no h o ) and in M S magnitude range 5.0-7.3. Equations (17a) and (17b) may be appropriate to analyze horizontal PGA seismic hazard by our extreme value approach, since magnitudes < 5 M S are unlikely to cause damage and be of engineering concern (Burton et al, 2003b The curves ah tp and ah ntp obtained directly from Greek data are quite similar to the curve ah mb derived from other areas outside Greece, while the curve ah am1 derived from European data without depth control is close to ah am2 derived from European data without depth control. The PGA values represented by the curves ah tp and ah mb are quite similar to the corresponding values in the NEAK map, but those represented by the curves ah am1 and ah am2 are much smaller than those in the NEAK map.…”

Section: Peak Ground Acceleration Attenuation Modelmentioning

confidence: 99%

Regional seismic hazard for Revithoussa, Greece: an earthquake early warning Shield and selection of alert signals

Burton

Tselentis

2003

Nat. Hazards Earth Syst. Sci.

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Abstract. The feasibility of an earthquake early warning Shield in Greece is being explored as a European demonstration project. This will be the first early warning system in Europe. The island of Revithoussa is a liquid natural gas storage facility near Athens from which a pipeline runs to a gas distribution centre in Athens. The Shield is being centred on these facilities. The purpose here is to analyze seismicity and seismic hazard in relation to the Shield centre and the remote sensor sites in the Shield network, eventually to help characterize the hazard levels, seismic signals and ground vibration levels that might be observed or create an alert situation at a station. Thus this paper mainly gives estimation of local seismic hazard in the regional working area of Revithoussa by studying extreme peak ground acceleration (PGA) and magnitudes.Within the Shield region, the most important zone to be detected is WNW from the Shield centre and is at a relatively short distance (50 km or less), the Gulf of Corinth (active normal faults) region. This is the critical zone for early warning of strong ground shaking. A second key region of seismicity is at an intermediate distance (100 km or more) from the centre, the Hellenic seismic zone south or southeast from Peloponnisos. A third region to be detected would be the northeastern region from the centre and is at a relatively long distance (about 150 km), Lemnos Island and neighboring region. Several parameters are estimated to characterize the seismicity and hazard. These include: the 50-year PGA with 90% probability of not being exceeded (pnbe) using Theodulidis & Papazachos strong motion attenuation for Greece, PGA NTP ; the 50-year magnitude and also at the 90% pnbe, M 50 and M P50 , respectively. There are also estimates of the earthquake that is most likely to be felt at a damaging intensity level, these are the most perceptible earthquakes at intensities VI, VII and VIII with magnitudes M VI , M VII and M VIII . Example results (from many) include the corresponding parameters describing the hazard for Revithoussa as follows: PGA NTP : 203 cm s −2 , M 50 : 6.5, M p50 : 6.9, M VI : 5.8, Correspondence to: Y. Xu (y.b.xu@uea.ac.uk) M VII : 6.1 and M VIII : 6.4. These data are also useful in selecting expected alert-signals i.e. examples of strong ground vibration histories that might be expected at a Shield station in the alert situation.

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“…This seismogenic free-zone method, independent of any Euclidean zoning assumptions, has been applied in various parts of the world [9,10].…”

Section: Seismic Hazardmentioning

confidence: 99%

Seismic hazard and risk in Shanghai and estimation of expected building damage

Cole

Burton

2008

Soil Dynamics and Earthquake Engineering

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The People's Republic of China is in the process of rapid demographic, economic and urban change including nationwide engineering and building construction at an unprecedented scale. The mega-city of Shanghai is at the centre of China's modernisation. Rapid urbanisation and building growth have increased the exposure of people and property to natural disasters. The seismic hazard of Shanghai and its vicinity is presented from a seismogenic free-zone methodology. A PGA value of 49 cm s À2 and a maximum intensity value of VII for the Chinese Seismic Intensity Scale (a scale similar to the Modified Mercalli) for a 99% probability of non-exceedance in 50 years are determined for Shanghai city. The potential building damage for three independent districts of the city centre named Putuo, Nanjing Road and Pudong are calculated using damage vulnerability matrices. It is found that old civil houses of brick and timber are the most vulnerable buildings with potentially a mean probability value of 7.4% of this building structure type exhibiting the highest damage grade at intensity VII. Crown

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Strong ground acceleration seismic hazard in Greece and neighboring regions

Cited by 34 publications

References 30 publications

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (<i>M</i><sub>s</sub> = 6.5, NW Greece)

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (<i>M</i><sub>s</sub> = 6.5, NW Greece)

Regional seismic hazard for Revithoussa, Greece: an earthquake early warning Shield and selection of alert signals

Seismic hazard and risk in Shanghai and estimation of expected building damage

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Strong ground acceleration seismic hazard in Greece and neighboring regions

Cited by 34 publications

References 30 publications

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the &quot;unexpected&quot; earthquake of 13 May 1995 (&lt;i&gt;M&lt;/i&gt;&lt;sub&gt;s&lt;/sub&gt; = 6.5, NW Greece)

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the &quot;unexpected&quot; earthquake of 13 May 1995 (&lt;i&gt;M&lt;/i&gt;&lt;sub&gt;s&lt;/sub&gt; = 6.5, NW Greece)

Regional seismic hazard for Revithoussa, Greece: an earthquake early warning Shield and selection of alert signals

Seismic hazard and risk in Shanghai and estimation of expected building damage

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Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (<i>M</i><sub>s</sub> = 6.5, NW Greece)

Seismic hazard assessment in Polyphyto Dam area (NW Greece) and its relation with the "unexpected" earthquake of 13 May 1995 (<i>M</i><sub>s</sub> = 6.5, NW Greece)