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Non-stationarity and internal correlations of the occurrence process of mining-induced seismic events

Non-stationarity and internal correlations of the occurrence process of mining-induced seismic events
Non-stationarity and internal correlations of the occurrence process of mining-induced seismic events
A point process, e.g., the seismic process, is potentially predictable when it is non-stationary, internally correlated or both. In this paper, an analysis of the occurrence process of mining-induced seismic events from Rudna copper mine in Poland is presented. Stationarity and internal correlation are investigated in complete seismic time series and segmentally in subseries demonstrating relatively stable seismicity rates. It is shown that the complete seismic series are non-stationary; however, most of their shorter subseries become stationary. In the stationary subseries, the distribution of interevent time is closer to the exponential distribution, which is characteristic for the Poisson process. However, in most of these subseries, the differences between the interevent time and Poisson distributions are still significant, revealing correlations among seismic events.
1895-6572
507-515
Olszewska, D.
1dfef07e-b4fa-4ae7-a2c9-bcc915dc1622
Lasocki, S.
11307633-b5dc-4ecf-b060-6630eb76ae6f
Leptokaropoulos, K.
6176f4d8-7af0-4575-bf2c-5aaba3d182ce
Olszewska, D.
1dfef07e-b4fa-4ae7-a2c9-bcc915dc1622
Lasocki, S.
11307633-b5dc-4ecf-b060-6630eb76ae6f
Leptokaropoulos, K.
6176f4d8-7af0-4575-bf2c-5aaba3d182ce

Olszewska, D., Lasocki, S. and Leptokaropoulos, K. (2017) Non-stationarity and internal correlations of the occurrence process of mining-induced seismic events. Acta Geophysica, 65, 507-515. (doi:10.1007/s11600-017-0024-y).

Record type: Article

Abstract

A point process, e.g., the seismic process, is potentially predictable when it is non-stationary, internally correlated or both. In this paper, an analysis of the occurrence process of mining-induced seismic events from Rudna copper mine in Poland is presented. Stationarity and internal correlation are investigated in complete seismic time series and segmentally in subseries demonstrating relatively stable seismicity rates. It is shown that the complete seismic series are non-stationary; however, most of their shorter subseries become stationary. In the stationary subseries, the distribution of interevent time is closer to the exponential distribution, which is characteristic for the Poisson process. However, in most of these subseries, the differences between the interevent time and Poisson distributions are still significant, revealing correlations among seismic events.

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Published date: 17 March 2017

Identifiers

Local EPrints ID: 448091
URI: http://eprints.soton.ac.uk/id/eprint/448091
ISSN: 1895-6572
PURE UUID: dc5e0d83-62aa-4817-a7ca-01387dbd81b8
ORCID for K. Leptokaropoulos: ORCID iD orcid.org/0000-0002-7524-0709

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Date deposited: 01 Apr 2021 15:58
Last modified: 17 Jul 2021 02:09

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Contributors

Author: D. Olszewska
Author: S. Lasocki

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