Precursory seismicity pattern before strong earthquakes in Greece

Baskoutas, I.; Papadopoulos, G. A.

doi:10.4081/rg.2014.4899

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…Despite all these difficulties, the eminent seismologist, [ 13 ], pointed out that some common physical mechanisms beneath the generation processes may act, although controlled by the local geodynamic forces and heterogeneities of the lithology [ 14 ]: this thought encourages the efforts towards a deeper knowledge of the physics behind such a complex phenomenon as the EQ.…”

Section: Introductionmentioning

confidence: 99%

Geosystemics View of Earthquakes

Santis

Abbattista

Alfonsi

et al. 2019

Entropy

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Earthquakes are the most energetic phenomena in the lithosphere: their study and comprehension are greatly worth doing because of the obvious importance for society. Geosystemics intends to study the Earth system as a whole, looking at the possible couplings among the different geo-layers, i.e., from the earth’s interior to the above atmosphere. It uses specific universal tools to integrate different methods that can be applied to multi-parameter data, often taken on different platforms (e.g., ground, marine or satellite observations). Its main objective is to understand the particular phenomenon of interest from a holistic point of view. Central is the use of entropy, together with other physical quantities that will be introduced case by case. In this paper, we will deal with earthquakes, as final part of a long-term chain of processes involving, not only the interaction between different components of the Earth’s interior but also the coupling of the solid earth with the above neutral or ionized atmosphere, and finally culminating with the main rupture along the fault of concern. Particular emphasis will be given to some Italian seismic sequences.

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Section: Introductionmentioning

confidence: 99%

Geosystemics View of Earthquakes

Santis

Abbattista

Alfonsi

et al. 2019

Entropy

View full text Add to dashboard Cite

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“…1). This behaviour was formulated as a precursory seismicity pattern Baskoutas and Popandopoulos, 2014). The open rectangular parallelogram denotes the first low probability stage, since the prognostic anomaly beginning, followed by a second higher probability stage, which concludes with the strong earthquake occurrence.…”

Section: Methodsmentioning

confidence: 99%

“…The open rectangular parallelogram denotes the first low probability stage, since the prognostic anomaly beginning, followed by a second higher probability stage, which concludes with the strong earthquake occurrence. Vertical red arrow shows the earthquake origin time from Baskoutas and Popandopoulos (2014).…”

Section: Methodsmentioning

confidence: 99%

Study of the seismicity temporal variation for the current seismic hazard evaluation in Val d'Agri, Italy

Baskoutas

D’Alessandro

2014

Nat. Hazards Earth Syst. Sci.

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Abstract. This study examines the temporal variation of the seismicity in the Val d'Agri (southern Italy) and adjacent areas, for the current seismic hazard evaluation. The temporal variation of the seismicity is expressed as time series of the number of earthquakes, b value of Gutenberg-Richter relationship or b value of the frequency-magnitude distribution and the seismic energy released in the form of logE 2/3 . The analysis was performed by means of a new research tool that includes visualizing techniques, which helps the interactive exploration and the interpretation of temporal variation changes. The obtained time series show a precursory seismicity pattern, characterized by low and high probability periods, which preceded earthquakes of magnitude M ≥ 4.0. The 75 % of the examined cases were successfully correlated with a change in seismicity pattern. The average duration of the low and the high probability periods is 10.6 and 13.8 months respectively. These results indicate that the seismicity temporal variation monitoring in a given area and the recognition of the low and high probability periods can contribute to the evaluation, in regular monthly intervals, of current seismic hazard status.

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“…1). This behaviour was formulated as a precursory seismicity pattern (Baskoutas et al 2011;Baskoutas and Popandopoulos, 2014). Based on the above consideration, the methodology for the current seismic hazard evaluation consists of the following: first in the construction, by means of FastBEE tool, of the temporal variation series of a set of seismicity parameters, like the number of earthquakes N, b value and the seismic energy released in the form logE 2/3 ; and second in the correlation of the observed temporal variation series changes with the significance of the area earthquakes.…”

Section: Methodsmentioning

confidence: 99%

Study of the seismicity temporal variation for the current seismic hazard evaluation in Val d'Agri, Italy

Baskoutas¹,

Papadopoulos²,

D’Alessandro³

2014

Preprint

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Abstract. This study examines the temporal variation of the seismicity in the Val d'Agri (Southern Italy) and adjacent areas, for the current seismic hazard evaluation. The temporal variation of the seismicity is expressed as time series of the number of earthquakes, the b value of the frequency magnitude distribution of Gutenberg-Richter relationship and the seismic energy released in the form of log E2/3. The analysis was performed by the means of a new research tool that includes visualizing techniques, which helps the interactive exploration and the interpretation of temporal variation changes. The obtained time series show a precursory seismicity pattern, characterized by low and high, probability periods, which preceded earthquakes of magnitude M ≥ 4.0. 75% of the examined cases were successfully correlated and 25 of them resulted false. The average duration of the low and the high probability periods is 10.6 and 13.8 months long respectively. These results indicate that the seismicity temporal variation monitoring in given area and the recognition of the low and high probability periods, can contribute to the evaluation, in regular monthly intervals, of the current status seismic hazard.

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Precursory seismicity pattern before strong earthquakes in Greece

Cited by 5 publications

References 13 publications

Geosystemics View of Earthquakes

Geosystemics View of Earthquakes

Study of the seismicity temporal variation for the current seismic hazard evaluation in Val d'Agri, Italy

Study of the seismicity temporal variation for the current seismic hazard evaluation in Val d'Agri, Italy

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