Chilean Earthquakes: Aquifer Responses at the Russian Platform

Besedina, A. N.; Vinogradov, E. A.; Горбунова, Е. М.; Svintsov, I. S.

doi:10.1007/s00024-016-1256-5

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…The results of such studies were summarized in monographs [1,2]. In these monographs and in many other works [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], it was shown that during observations in piezometric wells equipped with level gauges or pressure sensors, various changes in the groundwater level and pressure were detected, mainly influenced by the seismic waves from the earthquakes. To a lesser degree, such studies investigated the changes in the groundwater pressure before the earthquakes (hydrogeodynamic precursors, HPs) as well as the effects of changes in the static stress state of water-bearing rocks during the ruptures in the earthquake sources (coseismic effects, CSEs).…”

Section: Introductionmentioning

confidence: 98%

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

Копылова

Болдина

2023

Water

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Seismo-hydrogeodynamic effects (SHGEs) in groundwater level (pressure) variations in a range of periods from minutes to hours and days during local and teleseismic earthquakes were considered based on the data of precision observations in a deep piezometric well located in a seismically active region. With the use of the tidal analysis and frequency dependence of the barometric response of the water level, a static confined response of groundwater pressure in a range of periods from hours to the first tens of days was established. The annual water level trend was characterized by the seasonal function of a hydrostatic head change in the well. In the groundwater pressure, changes were detected due to several types of seismo-hydrogeodynamic effects: 1—the coseismic fluctuations during the first tens of seconds and minutes after the arrival of seismic waves from the earthquakes with magnitudes of 5.3–9.1 at epicentral distances of 80–700 km; 2—the supposed hydrogeodynamic precursors of the two strongest events; 3—the four types of variations under the vibration impact of seismic waves from Mw = 6.8–9.1 earthquakes at epicentral distances of 80–14,600 km. The dependence of the distinguished types of SHGEs on the earthquake parameters, the intensity of the seismic impact in the well area and the amplitude-frequency composition of seismic waves were considered.

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Section: Introductionmentioning

confidence: 98%

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

Копылова

Болдина

2023

Water

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“…За последние десятилетия в связи с широким использованием высокоточных датчиков уровня и давления подземных вод в разных регионах мира зарегистрированы разнообразные гидрогеологические эффекты от землетрясений [Kopylova, Boldina, 2020;Besedina et al, 2016;Brodsky et al, 2003;Shalev et al, 2016;Shi et al, 2015;Xiang et al, 2019]. Реакция системы «пластскважина» на сейсмическое воздействие рассматривается в качестве индикатора динамического деформирования водонасыщенного коллектора.…”

Section: Introductionunclassified

A Response of the "Reservoir-Well" System to Distant Earthquakes

Горбунова

Besedina

Санина

et al. 2022

Geodin. tektonofiz.

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The results of joint processing of hydrogeological and seismic data obtained at the Large-Scale Research Facilities "Mid-Latitude Geophysical Observation Complex "Mikhnevo" for a 12-year observation period are presented in the article. Responses of the "reservoir-well" system to the passage of seismic waves from distant earthquakes with magnitudes of 6.3-9.0, recorded at the epicentral distances from 1863 to 16507 km, have been identified in the database. Maximum values of groundwater level variations and ground velocity under seismic impact have been determined. The power-law dependence of the levels amplitudes of confined and weakly confined aquifers on the maximum vertical ground velocity has been established. A spectral analysis of 6-hour intervals (3 hours before and 3 hours after earthquakes) of seismic and hydrogeological data was performed. The frequencies corresponding to the maximum values of ground velocity and groundwater level variations were determined in the normalized spectra. The intervals within which the extremes of the hydrogeological responses are traced at background values of the ground velocity are identified in the low-frequency range. The amplitude-frequency characteristics of the "reservoir-well" systems differ under seismic impacts at epicentral distances up to 4901 km. The responses of the systems to earthquakes at epicentral distances of 11024-14026 km are similar.

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“…Earthquakes are known to induce groundwater level changes with varying amplitude, duration, and polarity of response (e.g., [18][19][20]). Earthquake-induced static and dynamic stresses (e.g., [21]) and local hydrogeological factors [22] influence groundwater level responses. In this first report on the Kaikōura earthquake's hydrogeological effects, we document an extensive dataset of groundwater level responses in order to assess the level to which earthquakedriven and local hydrogeological factors contributed to the national scale groundwater level response.…”

Section: Introductionmentioning

confidence: 99%

Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 M_w7.8 Kaikōura Earthquake

et al. 2019

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The 2016 Mw7.8 Kaikōura earthquake induced groundwater level changes throughout New Zealand. Water level changes were recorded at 433 sites in compositionally diverse, young, shallow aquifers, at distances of between 4 and 850 km from the earthquake epicentre. Water level changes are inconsistent with static stress changes but do correlate with peak ground acceleration (PGA). At PGAs exceeding ~2 m/s2, water level changes were predominantly persistent increases. At lower PGAs, there were approximately equal numbers of persistent water level increases and decreases. Shear-induced consolidation is interpreted to be the predominant mechanism causing groundwater changes at accelerations exceeding ~2 m/s2, whereas permeability enhancement is interpreted to predominate at lower levels of ground acceleration. Water level changes occur more frequently north of the epicentre, as a result of the fault’s northward rupture and resulting directivity effects. Local hydrogeological conditions also contributed to the observed responses, with larger water level changes occurring in deeper wells and in well-consolidated rocks at equivalent PGA levels.

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Chilean Earthquakes: Aquifer Responses at the Russian Platform

Cited by 9 publications

References 12 publications

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

A Response of the "Reservoir-Well" System to Distant Earthquakes

Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 M_w7.8 Kaikōura Earthquake

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Chilean Earthquakes: Aquifer Responses at the Russian Platform

Cited by 9 publications

References 12 publications

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

Seismo-Hydrogeodynamic Effects in Groundwater Pressure Changes: A Case Study of the YuZ-5 Well on the Kamchatka Peninsula

A Response of the "Reservoir-Well" System to Distant Earthquakes

Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 Mw7.8 Kaikōura Earthquake

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Seismological and Hydrogeological Controls on New Zealand-Wide Groundwater Level Changes Induced by the 2016 M_w7.8 Kaikōura Earthquake