High energy events as a combined effect of human impact and geoenvironmental factors - the case study based on GNSS data

IF 2.2 4区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI:10.46544/ams.v28i2.20

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引用次数: 0

Abstract

In the Upper Silesian Coal Basin (USCB) mining region in Poland, coal production has been gradually reduced for many years. Nevertheless, the number of high-energy tremors remains at a similar level or decreases much slower than production. We analyze this problem in the aspect of geological setting and on the base of geodetic data. We explain the paradox by specific interaction between man-induced and natural tectonic stress as seasonal hydrological effects. Anomalous energies released during large seismic events exceeded the predetermined threshold, typical for mining tremors in the area. Further, the authors point out the seasonal occurrence of these events. Temporal variations of distances between continuously operating GNSS (Global Navigation Satellite Systems) reference stations were analyzed, and linear strain, inferred from these geodetic observations, corresponded to high-energy tremors in the area. Consequently, the seismic events usually occurred when the analyzed baseline performance demonstrated significant seasonal increases or decreases of evaluated temporal distribution of strain. The aim of the analysis was to evaluate the relationships between the characteristics of the time series of deformations and the occurrence of seismic tremors of energy E ≥ 3 x 107J occur. Seasonal occurrences of high-energy seismic events as the energy they released suggest the influence of environmental factors.

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高能事件作为人类影响和地球环境因素的综合效应——基于全球导航卫星系统数据的案例研究

在波兰的上西里西亚煤盆地(USCB)矿区，煤炭产量多年来逐渐减少。然而，高能地震的数量仍然保持在类似的水平，或者减少的速度远低于产量。本文从地质背景和大地测量资料的角度对这一问题进行了分析。我们通过人为和自然构造应力之间的特定相互作用作为季节性水文效应来解释这一悖论。在大地震事件期间释放的异常能量超过了预定的阈值，这是该地区采矿震动的典型特征。此外，作者还指出了这些事件的季节性发生。分析了连续运行的GNSS(全球导航卫星系统)参考站之间距离的时间变化，从这些大地测量观测推断出的线性应变对应于该地区的高能地震。因此，地震事件通常发生在分析的基线性能显示出应变时间分布的显著季节性增加或减少时。分析的目的是评价变形时间序列特征与能量E≥3 × 107J地震的发生之间的关系。高能量地震事件的季节性发生，其释放的能量表明环境因素的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Montanistica Slovaca 地学-地球科学综合

CiteScore

3.60

自引率

12.50%

发文量

审稿时长

30 weeks

期刊介绍： Acta Montanistica Slovaca publishes high quality articles on basic and applied research in the following fields: geology and geological survey; mining; Earth resources; underground engineering and geotechnics; mining mechanization, mining transport, deep hole drilling; ecotechnology and mineralurgy; process control, automation and applied informatics in raw materials extraction, utilization and processing; other similar fields. Acta Montanistica Slovaca is the only scientific journal of this kind in Central, Eastern and South Eastern Europe. The submitted manuscripts should contribute significantly to the international literature, even if the focus can be regional. Manuscripts should cite the extant and relevant international literature, should clearly state what the wider contribution is (e.g. a novel discovery, application of a new technique or methodology, application of an existing methodology to a new problem), and should discuss the importance of the work in the international context.