Extreme Earthquake and Earthquake Perceptibility Study in Greece and its Surrounding Area

Burton, PW; Qin, CY; Tselentis, G‐Akis; Sokos, Efthimios

doi:10.1023/b:nhaz.0000035545.89097.0d

Cited by 19 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1). This fact in conjunction with the underlying geology, causes intense neotectonic deformation and high seismicity, 41,42 clearly associated with the Ionian subduction. [43][44][45] Additionally, the site is an easily-accessible flat area far from artificial strain and irrigation but near a city.…”

Section: Area Of Study 21 Geological and Tectonic Settingmentioning

confidence: 99%

Environmental monitoring of radon in soil during a very seismically active period occurred in South West Greece

et al. 2012

View full text Add to dashboard Cite

This paper focuses on the environmental monitoring of radon in soil as a potential trace gas in the search of earthquake precursors. The paper reports the following: (a) Pre-monitoring experiments. (b) Set-up of methods and devices. (c) Active and passive monitoring results concentrating on two extremely-strong radon anomalies (~ 500 kBq m(-3)). (e) Discussion regarding the employed ± 2σ technique for identifying radon disturbances. (f) Application of wavelet-power-spectrum fractal analysis for detecting power-law behaviour. The strong anomalies exhibited anti-persistent power-law-beta-values (b = (1.8 ± 0.2), b = (1.8 ± 0.3)) significantly higher than those of the baseline. Persistent b-values were also detected. The findings comply with a self-organised-critical pre-earthquake state. (h) Discussion on models that interpret the radon anomalies focusing on the recently-proposed asperity-model. (i) Application of a recent technique which showed that the two strong disturbances were proportional to the strain change. It was concluded that the strong radon disturbances may be linked to the strong earthquake of 8/6/2008, M = 6.5, occurred 29 km away from the installed instrumentation.

show abstract

Section: Area Of Study 21 Geological and Tectonic Settingmentioning

confidence: 99%

Environmental monitoring of radon in soil during a very seismically active period occurred in South West Greece

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The maps of results for the Revithoussa working area are focused results stemming from a much more general analysis for Greece (Burton et al, 2003a) and are examined here in detailed resolution. The main results are as follows.…”

Section: Discussionmentioning

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.

View full text Add to dashboard Cite

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.

show abstract

“…It is a very active region, meaning that tectonics has played a very significant role in the changes of the sea level over the last thousand years. Therefore, the coastal zone and other features of the gulf offer several pieces of evidence regarding active tectonic movements, such as uplifted shorelines and earthquake-driven landslides [53,55,[77][78][79].…”

Section: Sea-level Markersmentioning

confidence: 99%

Late Quaternary Relative Sea-Level Changes and Vertical GNSS Motions in the Gulf of Corinth: The Asymmetric Localization of Deformation Inside an Active Half-Graben

Evelpidou,

Ganas,

Karkani

et al. 2023

Geosciences

View full text Add to dashboard Cite

Remains of past sea levels such as tidal notches may provide valuable information for the investigation of relative sea-level changes (RSL) of eustatic/tectonic origin. In this review, we focus on case studies of coastal changes from the Corinth Gulf, where impacts of past earthquakes can be traced through various indicators. The southern coast has undergone a tectonic uplift during the Holocene, whereas the northern coast has undergone subsidence. The magnitude of RSL fall in the south Corinth Gulf is larger than RSL rise in the north. Exploiting previous measurements and datings, we created a geodatabase regarding the relative sea-level changes of the whole gulf, including geodetic data based on permanent GNSS observations. The combination of geomorphological (long-term) and geodetic (short-term) data is a key advance for this area, which is characterized by fast rates of N-S crustal extension and strong earthquakes. The joint dataset fits the tectonic model of an active half-graben where the hanging wall (northern coast) subsides and the footwall (southern coast) is uplifted. The highest uplift rates (3.5 mm/year) are near Aigion, which indicates an asymmetric localization of deformation inside this active rift.

show abstract

Extreme Earthquake and Earthquake Perceptibility Study in Greece and its Surrounding Area

Cited by 19 publications

References 23 publications

Environmental monitoring of radon in soil during a very seismically active period occurred in South West Greece

Environmental monitoring of radon in soil during a very seismically active period occurred in South West Greece

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

Late Quaternary Relative Sea-Level Changes and Vertical GNSS Motions in the Gulf of Corinth: The Asymmetric Localization of Deformation Inside an Active Half-Graben

Contact Info

Product

Resources

About