Determining the focal mechanisms of the events in the Carpathian region of Ukraine

Pavlova, A.; Hrytsai, O.; Malytskyy, D.

doi:10.5194/gi-3-229-2014

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…The Android software was designed for the hardware structure of the acquisition system, which monitored and controlled the operation and status of the acquisition system. Its design was described in Qiao et al (2018), along with a brief introduction to its structure.…”

Section: Hardware Platformmentioning

confidence: 99%

“…Seismic exploration has been valued as an important approach for geophysical exploration. As the main source for seismic exploration, acquisition stations play a central role in resource exploration and energy acquisition (Qiao et al, 2018). Microseismic monitoring is a type of seismic monitoring mainly applied to monitoring shocks caused by micromovements, such as fractures in mines.…”

Section: Introductionmentioning

confidence: 99%

“…Microseismic monitoring is a type of seismic monitoring mainly applied to monitoring shocks caused by micromovements, such as fractures in mines. A microseism is defined as the strain energy released in the form of elastic waves in the stress redistribution process caused by structural break and elongation (Mulargia et al, 2004;Kurzon et al, 2018;Pavlova et al, 2014). Locating the seismic source with the microseismic data is key to the geometric characteristic analysis of the underground primary and induced fractures, as well as techniques related to effective stimulated reservoir volume (ESRV) and the prediction of trends for future production (Thorne et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Design and implementation of the detection software of a wireless microseismic acquisition station based on the Android platform

Zhang

Qiao

Liu

2021

Geosci. Instrum. Method. Data Syst.

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Abstract. New energy acquisition devices are urgently required to address the increasing global energy consumption and increasing difficulty of energy exploitation. Devices for seismic exploration appear to be small in size, wireless and rapidly becoming more intelligent; hence, a traditional operating platform can no longer satisfy the demand of portable exploration device usage. This study investigates and develops hardware for a wireless microseismic acquisition station and then uses this hardware as a platform to address the distribution of wireless microseismic acquisition stations and deliver monitoring software based on the Android platform, which is portable, popular and has a large number of users. In large-scale field constructions, software can provide operators with visualised station layouts throughout the process, including positioning, ranging, angle measuring and network monitoring. It also offers a real-time network for monitoring small- and medium-sized microseismic acquisition station arrays under construction as well as other functions, such as intelligent control and real-time data monitoring of the status of the acquisition station. A drainage blast monitoring test is conducted on the system, showing positively monitored data and accurate results in the inverse operation. Moreover, the software and hardware are proven to be highly stable and portable through a post-construction test, which can help enhance the field construction efficiency.

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Section: Hardware Platformmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and implementation of the detection software of a wireless microseismic acquisition station based on the Android platform

Zhang

Qiao

Liu

2021

Geosci. Instrum. Method. Data Syst.

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“…Seismology is a relatively common discipline in modern geophysics and plays a pivotal role in geological exploration and disaster prediction [20]- [22]. The main source of its data is seismic records of natural or man-made events on the Earth's surface, using existing acquired data to obtain characteristic information about the various aspects of wavefield propagation properties [23]. This paper proposes the use of near-surface geophysical techniques, which have been combined with geomorphological analysis to determine the natural subsurface processes acting on the study area [24].…”

Section: Introductionmentioning

confidence: 99%

Mine Fracturing Monitoring Analysis Based on High-Precision Distributed Wireless Microseismic Acquisition Station

Qiao

Zhang

2019

IEEE Access

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A large number of shallow fossil fuel energy sources have been exhausted, including coal, oil, natural gas, and other non-renewable energy sources with rapid industrial development. The mining of fossil fuel energy has gradually shifted to the deep layers of the stratum, where safety is more difficult to guarantee. As a result, the development of a data acquisition system that can be used for microseismic monitoring and disaster prediction is imminent. In this study, in order to complete the design of a highprecision acquisition circuit, main control circuit, and other hardware circuits, the authors developed a set of high-precision distributed wireless microseismic acquisition stations, which was combined with threecomponent geophones to complete a microseismic monitoring system. This monitoring system was then verified through on-site work during the construction of a coal mine in China. This paper focuses on a detailed analysis of the data collected by the acquisition stations. Firstly, twelve sets of acquisition stations were used to conduct fixed-location blasting tests of the mine, which yielded good test results. Secondly, an analysis of microseismic monitoring data obtained during deep-well fracturing was carried out, and prefracturing static monitoring, carbon dioxide monitoring, fracturing monitoring, and post-fracturing static monitoring were also completed. This paper provides a detailed introduction to fracturing monitoring data of mines, combining discussions on the other three types of mine monitoring to reach relevant conclusions.

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Geodynamics

Kozlovskyy¹,

Maksymchuk²,

Malytskyi³

et al. 2020

JGD

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Purpose. To investigate structure-tectonic and faults features of the central part of the Transcarpathian internal depression and their relations with earthquake epicenters localization and peculiarities of seismic waves spreading on the base of instrumental observations in regime geophysical observatories of the Carpathian geodynamic polygon. Methods and results. The study developed methodology for specification of local earthquake focus depths by means of neuron-network modeling, computer processing and systematization of observation data at the Carpathian geodynamic network and adjusting areas on the basis of recent mapping and graphical information. On the examples of earthquakes registered by the regime geophysical station "Mukachevo", focal mechanisms of earthquakes were determined using first arrival polarities. Scientific novelty. The research determined the relationships between structural and tectonic features in the central part of the Carpathian backdeep, the recent geodynamics of the region's basement, peculiarities of seismic waves spreading, and formation of local earthquake focuses. It was stated that the influence of the igneous rocks of the Vyhorlat-Hutyn volcanic ridge significantly reduced the time of seismic waves passing in the sedimentary layer and partly in the basement. To determine a focal mechanism of the earthquake, the velocity of seismic waves in the layers should be taken into account on a case-by-case basis, taking into account the location of seismic stations with respect to deep and surface faults and the impact of volcanic rocks, and not using standard velocity models for seismic stations resulting from the stations that give significant results in calculations of output seismic wave angle and facilitate the selection of nodal surfaces. Practical value. Detailed investigations allow determining characteristics of earthquake epicenters, velocities and direction of seismic waves spreading in accordance with the structure of the basement and sedimentary layer. This will, in turn, provide an opportunity to supplement the data of long-term monitoring of natural and technological hazards in the region.

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Determining the focal mechanisms of the events in the Carpathian region of Ukraine

Cited by 4 publications

References 31 publications

Design and implementation of the detection software of a wireless microseismic acquisition station based on the Android platform

Design and implementation of the detection software of a wireless microseismic acquisition station based on the Android platform

Mine Fracturing Monitoring Analysis Based on High-Precision Distributed Wireless Microseismic Acquisition Station

Geodynamics

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