Shannon Entropy Analysis of Reservoir-Triggered Seismicity at Song Tranh 2 Hydropower Plant, Vietnam

Telesca, Luciano; Thai, Anh Tuan; Lovallo, Michele; Cao, Dinh Trong; Nguyen, Le-Minh

doi:10.3390/app12178873

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…The fractal and multifractal character of such time-series has been studied by Telesca et al [67] and Telesca and Lapenna [68], revealing new properties of seismicity. Recently, the fractal characteristics of seismicity identified by the interevent times have found useful applications to cases of induced seismicity [69], see also [70], as well as in the case of the Anatolian region with implications for seismic hazards before and during the 2023 Kahramanmaraş seismic sequence [71]. Additionally, in forecasting fractal studies, see, e.g., [72,73], declustered catalogs are used.…”

Section: Introductionmentioning

confidence: 99%

Identifying the Occurrence Time of the Destructive Kahramanmaraş-Gazientep Earthquake of Magnitude M7.8 in Turkey on 6 February 2023

Sarlis,

Skordas,

Christopoulos

et al. 2024

Applied Sciences

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Here, we employ natural time analysis of seismicity together with non-extensive statistical mechanics aiming at shortening the occurrence time window of the Kahramanmaraş-Gazientep M7.8 earthquake. The results obtained are in the positive direction pointing to the fact that after 3 February 2023 at 11:05:58 UTC, a strong earthquake was imminent. Natural time analysis also reveals a minimum fluctuation of the order parameter of seismicity almost three and a half months before the M7.8 earthquake, pointing to the initiation of seismic electrical activity. Moreover, before this earthquake occurrence, the detrended fluctuation analysis of the earthquake magnitude time-series reveals random behavior. Finally, when applying earthquake nowcasting, we find average earthquake potential score values which are compatible with those previously observed before strong (M≥7.1) earthquakes. The results obtained may improve our understanding of the physics of crustal phenomena that lead to strong earthquakes.

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Section: Introductionmentioning

confidence: 99%

Identifying the Occurrence Time of the Destructive Kahramanmaraş-Gazientep Earthquake of Magnitude M7.8 in Turkey on 6 February 2023

Sarlis,

Skordas,

Christopoulos

et al. 2024

Applied Sciences

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show abstract

“…The impact of the stress field, caused by reservoir load on the fault plane, was investigated to gain insights into the causative mechanisms of earthquakes in this region [18,19]; previous research was conducted to explore the connection between changes in the water level of the reservoir and seismic activity by using robust statistical techniques [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Fractal and Spectral Analysis of Seismicity in the Lai Chau Area (Vietnam)

Telesca,

Thai,

Cao

et al. 2023

Fractal Fract

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The time dynamics of the instrumental seismicity recorded in the area of the Lai Chau reservoir (Vietnam) between 2015 and 2021 were analyzed in this study. The Gutenberg–Richter analysis of the frequency–magnitude distribution has revealed that the seismic catalog is complete for events with magnitudes larger or equal to 0.6. The fractal method of the Allan Factor applied to the series of the occurrence times suggests that the seismic series is characterized by time-clustering behavior with rather large degrees of clustering, as indicated by the value of the fractal exponent α≈0.55. The time-clustering of the time distribution of the earthquakes is also confirmed by a global coefficient of variation value of 1.9 for the interevent times. The application of the correlogram-based periodogram, which is a robust method used to estimate the power spectrum of short series, has revealed three main cycles with a significance level of p<0.01 (of 10 months, 1 year, and 2 years) in the monthly variation of the mean water level of the reservoir, and two main periodicities with a significance level of p<0.01 (at 6 months and 2 years) in the monthly number of earthquakes. By decomposing the monthly earthquake counts into intrinsic mode functions (IMFs) using the empirical decomposition method (EMD), we identified two IMFs characterized by cycles of 10 months and 2 years, significant at the 1% level, and one cycle of 1 year, significant at the 5% level. The cycles identified in these two IMFs are consistent with those detected in the water level, showing that, in a rigorously statistical manner, the seismic process occurring in the Lai Chau area might be triggered by the loading–unloading operational cycles of the reservoir.

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Information theory and earthquakes: Depth propagation seismicity in northern Chile

Pastén

Saravia²,

Vogel

et al. 2022

Chaos, Solitons & Fractals

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Shannon Entropy Analysis of Reservoir-Triggered Seismicity at Song Tranh 2 Hydropower Plant, Vietnam

Cited by 6 publications

References 30 publications

Identifying the Occurrence Time of the Destructive Kahramanmaraş-Gazientep Earthquake of Magnitude M7.8 in Turkey on 6 February 2023

Identifying the Occurrence Time of the Destructive Kahramanmaraş-Gazientep Earthquake of Magnitude M7.8 in Turkey on 6 February 2023

Fractal and Spectral Analysis of Seismicity in the Lai Chau Area (Vietnam)

Information theory and earthquakes: Depth propagation seismicity in northern Chile

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