Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka
A new method is presented for statistical analysis of long-term time series of water level observations aimed at distinguishing short-term disturbances; observation data from the YuZ-5 well, located in the Petropavlovsk Geodynamic Test Area, eastern Kamchatka, are considered. These data (from July 2...
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ftinstvs:oai:repo.kscnet.ru:3716 2023-05-15T16:59:06+02:00 Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka Kopylova G.N. Lyubushin A.A. Boldina S.V. 2019 text http://repo.kscnet.ru/3716/ http://repo.kscnet.ru/3716/1/SEIN507.pdf https://doi.org/10.3103/S0747923919050086 en eng http://repo.kscnet.ru/3716/1/SEIN507.pdf Kopylova G.N. <http://repo.kscnet.ru/view/creators/Kopylova=3AG=2EN=2E=3A=3A.html>, Lyubushin A.A. <http://repo.kscnet.ru/view/creators/Lyubushin=3AA=2EA=2E=3A=3A.html>, Boldina S.V. <http://repo.kscnet.ru/view/creators/Boldina=3AS=2EV=2E=3A=3A.html> (2019) Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka // Seismic Instruments. Vol. 55, No. 5. pp. 507-523. doi:10.3103/S0747923919050086 <http://doi.org/10.3103/S0747923919050086>. 37.01.73 Статистика 37.31.19 Сейсмология 38.61.15 Динамика и режим подземных вод Статья PeerReviewed 2019 ftinstvs https://doi.org/10.3103/S0747923919050086 2022-08-09T17:06:32Z A new method is presented for statistical analysis of long-term time series of water level observations aimed at distinguishing short-term disturbances; observation data from the YuZ-5 well, located in the Petropavlovsk Geodynamic Test Area, eastern Kamchatka, are considered. These data (from July 27, 2012, to February 1, 2018) are remarkable for their degree of detail: the sampling rate of the water level and atmospheric pressure measurements was 5 min and the sensitivity (accuracy) was ±0.1 cm for water level recording and ±0.1 hPa for atmospheric pressure. Also, five strong earthquakes with Mw = 6.5–8.3 occurred at epicentral distances of de = 80–700 km during the observation period. A thorough analysis of the hydrodynamic regime of the observation well over a long period and the high quality of observation data, together with the data on strong seismic events, allow us to consider the possibility of using formalized statistical methods of water level data processing for diagnostics of anomalous conditions. As a result of factor and cluster analysis applied to the sequence of multidimensional vectors of the statistical properties of water level time series in successive one-day-long time windows, after adaptive compensation for atmospheric pressure, four different statistically significant states of time series, replacing each other in time, are distinguished. Geophysical interpretation of the anomalous conditions of the water level time series (with a probability of 0.013) is carried out in comparison to strong earthquakes, technical conditions of observations, and seasonal features of the hydrodynamic regime in the observation well. It is shown that this method of water level data processing can detect short-term anomalies in the hydrogeodynamic regime of a well, significantly supplementing traditional processing of water level data aimed mostly at finding low-frequency trends in water level changes. This method can be applied in geophysical monitoring and prediction of earthquakes from online processing of ... Text Kamchatka Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository Petropavlovsk ENVELOPE(158.626,158.626,53.067,53.067) Seismic Instruments 55 5 507 523 |
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Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository |
op_collection_id |
ftinstvs |
language |
English |
topic |
37.01.73 Статистика 37.31.19 Сейсмология 38.61.15 Динамика и режим подземных вод |
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37.01.73 Статистика 37.31.19 Сейсмология 38.61.15 Динамика и режим подземных вод Kopylova G.N. Lyubushin A.A. Boldina S.V. Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
topic_facet |
37.01.73 Статистика 37.31.19 Сейсмология 38.61.15 Динамика и режим подземных вод |
description |
A new method is presented for statistical analysis of long-term time series of water level observations aimed at distinguishing short-term disturbances; observation data from the YuZ-5 well, located in the Petropavlovsk Geodynamic Test Area, eastern Kamchatka, are considered. These data (from July 27, 2012, to February 1, 2018) are remarkable for their degree of detail: the sampling rate of the water level and atmospheric pressure measurements was 5 min and the sensitivity (accuracy) was ±0.1 cm for water level recording and ±0.1 hPa for atmospheric pressure. Also, five strong earthquakes with Mw = 6.5–8.3 occurred at epicentral distances of de = 80–700 km during the observation period. A thorough analysis of the hydrodynamic regime of the observation well over a long period and the high quality of observation data, together with the data on strong seismic events, allow us to consider the possibility of using formalized statistical methods of water level data processing for diagnostics of anomalous conditions. As a result of factor and cluster analysis applied to the sequence of multidimensional vectors of the statistical properties of water level time series in successive one-day-long time windows, after adaptive compensation for atmospheric pressure, four different statistically significant states of time series, replacing each other in time, are distinguished. Geophysical interpretation of the anomalous conditions of the water level time series (with a probability of 0.013) is carried out in comparison to strong earthquakes, technical conditions of observations, and seasonal features of the hydrodynamic regime in the observation well. It is shown that this method of water level data processing can detect short-term anomalies in the hydrogeodynamic regime of a well, significantly supplementing traditional processing of water level data aimed mostly at finding low-frequency trends in water level changes. This method can be applied in geophysical monitoring and prediction of earthquakes from online processing of ... |
format |
Text |
author |
Kopylova G.N. Lyubushin A.A. Boldina S.V. |
author_facet |
Kopylova G.N. Lyubushin A.A. Boldina S.V. |
author_sort |
Kopylova G.N. |
title |
Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
title_short |
Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
title_full |
Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
title_fullStr |
Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
title_full_unstemmed |
Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka |
title_sort |
statistical analysis of precision water level data from observations in a seismoactive region: case study of the yuz-5 well, kamchatka |
publishDate |
2019 |
url |
http://repo.kscnet.ru/3716/ http://repo.kscnet.ru/3716/1/SEIN507.pdf https://doi.org/10.3103/S0747923919050086 |
long_lat |
ENVELOPE(158.626,158.626,53.067,53.067) |
geographic |
Petropavlovsk |
geographic_facet |
Petropavlovsk |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
http://repo.kscnet.ru/3716/1/SEIN507.pdf Kopylova G.N. <http://repo.kscnet.ru/view/creators/Kopylova=3AG=2EN=2E=3A=3A.html>, Lyubushin A.A. <http://repo.kscnet.ru/view/creators/Lyubushin=3AA=2EA=2E=3A=3A.html>, Boldina S.V. <http://repo.kscnet.ru/view/creators/Boldina=3AS=2EV=2E=3A=3A.html> (2019) Statistical Analysis of Precision Water Level Data from Observations in a Seismoactive Region: Case Study of the YuZ-5 Well, Kamchatka // Seismic Instruments. Vol. 55, No. 5. pp. 507-523. doi:10.3103/S0747923919050086 <http://doi.org/10.3103/S0747923919050086>. |
op_doi |
https://doi.org/10.3103/S0747923919050086 |
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Seismic Instruments |
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55 |
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