Spectral Evidence for Reservoir-Triggered Seismicity at Song Tranh 2 Reservoir (Vietnam)

Telesca, Luciano; Thai, Anh Tuan; Cao, Dinh Trong; Ha, Thi Giang

doi:10.1007/s00024-021-02858-0

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…In this study, we investigated the seismicity that occurred around Song Tranh 2 reservoir only the earthquakes with a magnitude larger or equal to 1.7, which, according to Telesca et al [ 35 ], is the completeness magnitude of whole seismicity of the area (ST-W). Figure 2 a shows the time distribution of ST2-W seismicity.…”

Section: The Seismic Cataloguementioning

confidence: 99%

Visibility Graph Analysis of Reservoir-Triggered Seismicity: The Case of Song Tranh 2 Hydropower, Vietnam

Telesca

Thai

Lovallo

et al. 2022

Entropy

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In this study, the visibility graph analysis of seismicity triggered by Song Tranh 2 hydropower (Vietnam) is performed. The relationship between the seismic (the Gutenberg–Richter b-value) and topological (the k–M slope) parameters of seismicity is analysed. Our findings indicate that the relationship between the Gutenberg–Richter b-value and the k–M slope of the investigated seismicity is in agreement with that characterising the tectonic seismicity. The results obtained from analysing the reservoir-triggered seismicity of Song Tranh 2 area could contribute to better characterisation of the relationship between the seismological and topological parameters of seismicity, strengthening the universal character of the relationship between the b-value and the k–M slope.

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Section: The Seismic Cataloguementioning

confidence: 99%

Visibility Graph Analysis of Reservoir-Triggered Seismicity: The Case of Song Tranh 2 Hydropower, Vietnam

Telesca

Thai

Lovallo

et al. 2022

Entropy

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“…A final hazard with increasing attention in Vietnam relates to the potential for large reservoirs to induce seismic activities through the interaction of changing water levels and natural seismic processes in the area. Although not conclusive, some research suggests that small earthquakes occurring in the vicinity of some HPFs may have been triggered by periodic loading-unloading of reservoir water, for example at the Sông Tranh 2 and Sơn La HPFs [131,132].…”

Section: Natural and Anthropogenic Hazardsmentioning

confidence: 99%

We Have Eaten the Rivers: The Past, Present, and Unsustainable Future of Hydroelectricity in Vietnam

Sasges

Ziegler

2023

Sustainability

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Vietnam has one of the most intensively energy-exploited riverscapes in Asia with at least 720 hydropower facilities of various capacities currently in operation or in some stage of construction. These facilities represent about 26 GW of installed capacity. This degree of domestic exploitation is often overshadowed by the geopolitically contested manipulation of the waters of the international Mekong River. In contrast, the utilization of Vietnam’s hydropower resources has unfolded gradually and largely unremarked for more than half a century. This perspective argues that the harnessing of rivers and streams for electricity generation is the result of not only the country’s abundant hydrologic resources, but also its history, culture, and (geo)politics. The paper traces the processes that have produced this high level of river exploitation, its ambiguous history, and the uncertain future of hydropower in Vietnam in the context of sustainability. Further, the renewed interest in dam-building in recent years is part of a “theater of decarbonization” that masks the operation of powerful domestic and international lobbies with an interest in “heavy engineering” projects that will do little to meet the nation’s rapidly growing electricity needs but will likely incur detrimental ecological and sociological impacts. The paper ends by positing that rather than forging ahead with the construction of additional small hydropower facilities, a more ecologically and socially equitable policy could instead critically examine the sustainability of existing capabilities, resolve the factors limiting the development of other renewable sources of energy, and face the fundamental challenge of curbing energy use.

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“…Typically associated with additional static loading, such as the weight of the water reservoir and its seasonal variations, as well as factors like tectonic faults, liquefaction, and pore pressure variations, reservoir-triggered seismicity has been the subject of numerous investigations [10][11][12][13][14][15][16][17][18][19][20][21][22]. The consensus from these studies is that the filling of reservoirs has a discernible impact on the Earth's crust, influencing the seismicity in areas already prone to earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Spectral Investigation of the Relationship between Seismicity and Water Level in the Enguri High Dam Area (Georgia)

Telesca,

Tsereteli,

Chelidze

et al. 2024

Geosciences

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A spectral analysis of the time dynamics of seismicity occurring in the Enguri area of Georgia from 1978 to 2021 is performed by means of Schuster’s spectrum analysis, periodogram analysis, and empirical mode decomposition. The results of our analysis suggest that earthquakes around the reservoir (within a 50 km radius from the center of the dam) may be due to changes in water level, featured by the yearly cycle of loading and unloading operations of the reservoir. It is observed that the impacts of water fluctuations are more pronounced in shallower strata (down to 10 km) than deeper ones (down to 20 km); this could indicate that earthquakes occurring at deeper levels may primarily result from tectonic forces, whereas those at shallower depths may be predominantly triggered by reservoir-induced factors.

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Spectral Evidence for Reservoir-Triggered Seismicity at Song Tranh 2 Reservoir (Vietnam)

Cited by 7 publications

References 35 publications

Visibility Graph Analysis of Reservoir-Triggered Seismicity: The Case of Song Tranh 2 Hydropower, Vietnam

Visibility Graph Analysis of Reservoir-Triggered Seismicity: The Case of Song Tranh 2 Hydropower, Vietnam

We Have Eaten the Rivers: The Past, Present, and Unsustainable Future of Hydroelectricity in Vietnam

Spectral Investigation of the Relationship between Seismicity and Water Level in the Enguri High Dam Area (Georgia)

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