Publication detail

Differentiating between artificial and natural sources of electromagnetic radiation at a seismogenic fault

BAROŇ, I. KOKTAVÝ, P. MELICHAR, R. MACKŮ, R. TRČKA, T. MATT, R. JOSEF, S. BALEK, J. LUKAŠ, P. DIENDORFER, G. ŠKARVADA, P.

Original Title

Differentiating between artificial and natural sources of electromagnetic radiation at a seismogenic fault

Type

journal article in Web of Science

Language

English

Original Abstract

Ultralow frequency (ULF) to low frequency (LF) electromagnetic radiation represents one of the most promising effects of brittle rock strain and microcracking that might be potentially helpful for short term earthquake forecasting. In this study the results of a six month monitoring campaign are presented from Obir Cave in the eastern Alps. Direct experimental observations of electromagnetic radiation have been made using a customised broadband data logger installed next to the Obir Fault -this seismogenic fault near the Periadriatic Lineament is known to be related to at least three large prehistoric earthquakes. On the basis of these measurements it has been possible to characterise a number of distinct signals: artificial constant narrowband signals at discrete frequencies; short serial broadband impulses; high energy broadband impulses; and low energy broadband im-pulses. The narrowband artificial signals were removed from the electromagnetic radiation time series analysis so that the natural signals were enhanced and could be compared more easily to meteorological parameters and rock strain indicators. Critically, the high energy broadband impulses show a strong correlation with lightning activity across much of central Europe and the eastern Mediterranean while the low energy broadband impulses appear to be associated with local rock strain in and around Obir Cave. Unfortunately, it seems certain that some of the essential strain related impulses are likely to have been overprinted by the larger lightning related impulses.

Keywords

Electromagnetic radiation; Brittle rock strain; Microcracking; Seismogenic fault; Eastern Alps

Authors

BAROŇ, I.; KOKTAVÝ, P.; MELICHAR, R.; MACKŮ, R.; TRČKA, T.; MATT, R.; JOSEF, S.; BALEK, J.; LUKAŠ, P.; DIENDORFER, G.; ŠKARVADA, P.

Released

28. 11. 2022

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

0013-7952

Periodical

ENGINEERING GEOLOGY

Year of study

311

Number

11

State

Kingdom of the Netherlands

Pages from

1

Pages to

10

Pages count

15

URL

https://www.webofscience.com/wos/woscc/full-record/WOS:000886066300001

BibTex

@article{BUT180337,
  author="Ivo {Baroň} and Pavel {Koktavý} and Rostislav {Melichar} and Robert {Macků} and Tomáš {Trčka} and Rowberry {Matt} and Stemberk {Josef} and Jan {Balek} and Plan {Lukaš} and Gerhard {Diendorfer} and Pavel {Škarvada}",
  title="Differentiating between artificial and natural sources of electromagnetic radiation at a seismogenic fault",
  journal="ENGINEERING GEOLOGY",
  year="2022",
  volume="311",
  number="11",
  pages="1--10",
  doi="10.1016/j.enggeo.2022.106912",
  issn="0013-7952",
  url="https://www.webofscience.com/wos/woscc/full-record/WOS:000886066300001"
}