Strong Earthquakes in 2009–2016 in Central Italy: Tectonic Position, Seismic History, and Aftershock Processes

Lutikov, A. I.; Рогожин, Е. А.; Dontsova, G. Yu.; Kuchai, M. S.

doi:10.1134/s106935131802012x

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…The first one, with the magnitude of 6.0, occurred in Amatrice on August 24 and killed 298 people. On October 26 evening, a series of shocks with the strongest one having a magnitude of about 6, took place in approximately the same region (Lutikov et al 2018). Those sequences are actually missing from the data analysed in this paper.…”

Section: Discussionmentioning

confidence: 84%

Local spatial log-Gaussian Cox processes for seismic data

et al. 2022

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In this paper, we propose the use of advanced and flexible statistical models to describe the spatial displacement of earthquake data. The paper aims to account for the external geological information in the description of complex seismic point processes, through the estimation of models with space varying parameters. A local version of the Log-Gaussian Cox processes (LGCP) is introduced and applied for the first time, exploiting the inferential tools in Baddeley (Spat Stat 22:261–295, 2017), estimating the model by the local Palm likelihood. We provide methods and approaches accounting for the interaction among points, typically described by LGCP models through the estimation of the covariance parameters of the Gaussian Random Field, that in this local version are allowed to vary in space, providing a more realistic description of the clustering feature of seismic events. Furthermore, we contribute to the framework of diagnostics, outlining suitable methods for the local context and proposing a new step-wise approach addressing the particular case of multiple covariates. Overall, we show that local models provide good inferential results and could serve as the basis for future spatio-temporal local model developments, peculiar for the description of the complex seismic phenomenon.

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Section: Discussionmentioning

confidence: 84%

Local spatial log-Gaussian Cox processes for seismic data

et al. 2022

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Seismic Activations in Italy in the 15th–21st Centuries, from Historical Data

Ioganson

2019

Seism. Instr.

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Seismic activations in Turkey in the 17th – early 21st centuries and Kahramanmarash earthquakes on February 6, 2023

Ioganson,

Ovsyuchenko,

Dontzova

2023

RJS

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The long-term seismic regime of Turkey for the 17th - early 21st centuries are analyzed. It is shown that the fundamental feature of the seismic regime is periodic seismic activations (SA) of strong earthquakes. During the analyzed period, 14 seismic activations of various durations (from 4 to 24 years) and a different number of events (from 4 to 22) were traced. The last SA in Turkey began in 2011, and most likely did not end with the Kahramanmarash earthquake in 2023. SA, as a rule, involves the main seismically active regions of the country (the Aegean coast, the North and East Anatolian faults), but with a clear dominance a certain seismically active area with reduced activity of others. An analysis of historical seismicity shows that strong earthquakes along the North and East Anatolian faults in many cases occur in the same source zones, confirming the concept of seismic sources as inherited geological structures, which may serve as an important prognostic symptom. The Kahramanmaraş earthquakes on February 6, 2023 occurred in the framework of the seismic activation that began in 2011.The position of the Mahmaranmarash seismic source on the southern segment of the East Anatolian fault is in good agreement with displacement of seismic sources from north to south along this fault in the 20th century.

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Strong Earthquakes in 2009–2016 in Central Italy: Tectonic Position, Seismic History, and Aftershock Processes

Cited by 3 publications

References 25 publications

Local spatial log-Gaussian Cox processes for seismic data

Local spatial log-Gaussian Cox processes for seismic data

Seismic Activations in Italy in the 15th–21st Centuries, from Historical Data

Seismic activations in Turkey in the 17th – early 21st centuries and Kahramanmarash earthquakes on February 6, 2023

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