Опыт Регистрации Вариаций Уровня И Физико-Химических Параметров Подземных Вод В Пьезометрических Скважинах, Вызванных Сильными Землетрясениями (На Примере Камчатки)

doi:10.21455/si2016.4-4

Cited by 5 publications

(4 citation statements)

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“…The instruments are manufactured by OOO Polinom, Khabarovsk. The water level measurement instruments are described in (Kopylova and Boldina et al, 2016;. During the entire observation period, the sensitivity of water level measurements was 0.1 cm and of atmospheric pressure measurements, 0.1 hPa.…”

Section: Initial Data and Study Methodsmentioning

confidence: 99%

“…The data on the YuZ-5 well are presented in (Kopylova, 2006;Kopylova et al, 2016;. The well is located at 53.169° N, 158.414° E and has a depth of 800 m. In the depth interval 0-310 m, the wellbore is cased with a metal Their transmissivity T = 7.8 m 2 /day was estimated from pumping data (Kopylova and Boldina, 2007).…”

Section: Initial Data and Study Methodsmentioning

confidence: 99%

“…On Taiwan, during the the Chi-Chi earthquake of 1999 with M w = 7.5, observations were conducted on a network of several hundred wells (Wang et al, 2001;Chia et al, 2008). Water level variations in individual wells were monitored in the USA (Woodcook and Roeloffs, 1996;Roeloffs, 1998), in Japan (Matsumoto and Roeloffs, 2003), in the Caucasus (Georgia) (Chelidze et al, 2019), in Russia on the East European platform (Kocharyan et al, 2011), in the Kamchatka Peninsula (Kopylova et al, 2016;Kopylova and Boldina, 2019), and in other seismically active regions . Studying the specificity of HGSV manifestations in individual wells makes it possible to investigate hydrogeodynamic processes initiated in the well-water-bearing rock system by seismic waves and to track the changes in the state of the water-saturated medium with time.…”

Section: Introductionmentioning

confidence: 99%

“…This division of the postseismic HGSVs seems to be quite adequately substantiated by the empirical data except for their strict limitation by the cited time boundaries which may vary for the individual wells depending on the construction of the latter and on the filtration properties of water-bearing rocks. The examples of sustained post-seismic water level changes in wells are presented in (Roeloffs, 1998;Kopylova, 2001;Zhang et al, 2018); the short-term post-seismic changes in water level are described in (Kopylova et al, 2016;.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Seismic Waves in Water Level Changes in a Well: Empirical Data and Models

Копылова

Болдина

2020

Izv., Phys. Solid Earth

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The high-precision water level measurements with a sampling interval of 5-10 min were carried out in 1996-2017 in the YuZ-5 well, Kamchatka. In the obtained time series, water level variations caused by the passage of seismic waves (hydrogeoseismic variations-HGSV) during 19 earthquakes with М w = 6.8-9.1 which occurred at epicentral distances of 80-14.6 thousand km are revealed. Based on the HGSV morphological features, four main types of these variations are distinguished: oscillations (I); short (up to tens of hours) water level rises (II) superimposed on oscillations; short rises (III); and long (1.5-3 months) drawdowns (IV). The dependence of the occurrence of the revealed GHSV types on earthquake parameters (magnitude and distance), specific energy density and maximum seismic wave velocity, and the amplitude-frequency content of ground motion is analyzed based on the records at a nearest seismic station. Based on several case studies, hydrogeodynamic processes of HGSV formation are investigated using numerical modeling. It is shown that the forced and free amplitude fluctuations in the water level (types I and II) can arise due to the enhancement of groundwater pressure variations in the well-water-bearing rock system during the passage of surface seismic waves with periods corresponding to the resonant frequency of the well (τ = 44.6 s). The rise in the water level in well lasting for tens minutes to hours (types II and III of HGSV variation) is caused by the short increase in pressure under violation of the steady water flow in the direct vicinity of the well; strong local earthquakes accompanied by ground shaking with intensity I msk-64 ≥ 5 cause sustained drawdowns (type IV) due to pressure drop with the amplitudes up to 0.1 bar within a radius of up to a few hundred meters from the well.

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Section: Initial Data and Study Methodsmentioning

confidence: 99%

Section: Initial Data and Study Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Seismic Waves in Water Level Changes in a Well: Empirical Data and Models

Копылова

Болдина

2020

Izv., Phys. Solid Earth

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Hydrogeoseismological Research in Kamchatka: 1977–2017

Копылова

Болдина

2019

J. Volcanolog. Seismol.

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This paper is concerned with the main stages in the setting-up and technical development of a system specializing in physical and chemical parameters of groundwater at a network of wells and springs in the Petropavlovsk Geodynamic Test Area, Kamchatka. The focus is on a description of hydrogeochemical and hydrogeodynamic precursors to Kamchatka earthquakes (М w = 6.6-7.8) that occur a few weeks to a few months before a seismic event, manifesting themselves in anomalous changes in chemical composition and groundwater level. The precursors are discussed in application to their use at specialized councils on earthquake prediction. It is shown that the system of automated observation of groundwater parameters at wells as developed at the Kamchatka Branch of the Geophysical Survey of the Russian Academy of Sciences (KB GS RAS) is capable of identifying hydrogeodynamic precursors of water level in near real time and of providing, in some particular cases, quantitative estimates of pre-seismic and coseismic of deformation in water-saturated rocks. This can be useful in geophysical monitoring and intermediate-term prediction of strong earthquakes for the Kamchatka region.

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Study of the "aquifer-well" geotechnogenic system using precision observations at the water intakes of Tyumen region

Курчиков

Kozyrev

2020

Izvestiâ vysših učebnyh zavedenij. Neftʹ i gaz

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An express research method is presented for studying the geotechnogenic system "aquifer-well" in solving problems of hydrogeology. The express method is based on the use of precision water level measurements. The scope of its application and relevance in modern conditions аre shown. Express pumping was performed at water bodies of Tyumen region, where an assessment (revaluation) of fresh underground water reserves was carried out. A comparative analysis of the results of express and traditional methods showed good convergence. The use of express pumping in the practice of hydrogeological research on small water bodies is the only tool for obtaining raw materials for the calculation (recalculation) of fresh groundwater reserves and makes it possible to reduce material costs when performing pilot filtration work. The recording of changes in the values of the conductivity coefficient by means of precision measurements of the water level during express pumping in monitoring studies allows you reliable and timely detection of changes in the filtration medium.

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Cited by 5 publications

References 1 publication

Effects of Seismic Waves in Water Level Changes in a Well: Empirical Data and Models

Effects of Seismic Waves in Water Level Changes in a Well: Empirical Data and Models

Hydrogeoseismological Research in Kamchatka: 1977–2017

Study of the "aquifer-well" geotechnogenic system using precision observations at the water intakes of Tyumen region

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