Preseismic ULF electromagnetic effect from observation at Kamchatka
Some results of ULF magnetic field observation at Karimshino site (Kamchatka, Russia) since June 2000 to September 2001 are presented here. Using case study we have found an effect of suppression of ULF intensity about 2–6 days before rather strong and nearby seismic shocks (magnitude M = 4.0 – 6.2)...
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ftdoajarticles:oai:doaj.org/article:96ea222fedb74af69fff44020d025e54 2023-05-15T16:58:49+02:00 Preseismic ULF electromagnetic effect from observation at Kamchatka O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev 2003-01-01T00:00:00Z https://doaj.org/article/96ea222fedb74af69fff44020d025e54 EN eng Copernicus Publications http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 1561-8633 1684-9981 https://doaj.org/article/96ea222fedb74af69fff44020d025e54 Natural Hazards and Earth System Sciences, Vol 3, Iss 3/4, Pp 203-209 (2003) Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 article 2003 ftdoajarticles 2022-12-31T14:07:39Z Some results of ULF magnetic field observation at Karimshino site (Kamchatka, Russia) since June 2000 to September 2001 are presented here. Using case study we have found an effect of suppression of ULF intensity about 2–6 days before rather strong and nearby seismic shocks (magnitude M = 4.0 – 6.2). It is revealed for nighttime and horizontal component of ULF field ( G ) in the frequency range 0.01 – 0.1 Hz. Then we prove the reliability of the effect by computed correlation between G (or 1/ G ) and specially calculated seismic indexes K s for the whole period of observation. Basing on the simple criteria we conclude that reliability of seismo-associated ULF suppression effect is comparable with well-known effect of connection between ULF variation and K p index of global magnetic activity. It seems the reason of suppression is located at the atmosphere or ionosphere but not in the ground medium. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev Preseismic ULF electromagnetic effect from observation at Kamchatka |
topic_facet |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Some results of ULF magnetic field observation at Karimshino site (Kamchatka, Russia) since June 2000 to September 2001 are presented here. Using case study we have found an effect of suppression of ULF intensity about 2–6 days before rather strong and nearby seismic shocks (magnitude M = 4.0 – 6.2). It is revealed for nighttime and horizontal component of ULF field ( G ) in the frequency range 0.01 – 0.1 Hz. Then we prove the reliability of the effect by computed correlation between G (or 1/ G ) and specially calculated seismic indexes K s for the whole period of observation. Basing on the simple criteria we conclude that reliability of seismo-associated ULF suppression effect is comparable with well-known effect of connection between ULF variation and K p index of global magnetic activity. It seems the reason of suppression is located at the atmosphere or ionosphere but not in the ground medium. |
format |
Article in Journal/Newspaper |
author |
O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev |
author_facet |
O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev |
author_sort |
O. Molchanov |
title |
Preseismic ULF electromagnetic effect from observation at Kamchatka |
title_short |
Preseismic ULF electromagnetic effect from observation at Kamchatka |
title_full |
Preseismic ULF electromagnetic effect from observation at Kamchatka |
title_fullStr |
Preseismic ULF electromagnetic effect from observation at Kamchatka |
title_full_unstemmed |
Preseismic ULF electromagnetic effect from observation at Kamchatka |
title_sort |
preseismic ulf electromagnetic effect from observation at kamchatka |
publisher |
Copernicus Publications |
publishDate |
2003 |
url |
https://doaj.org/article/96ea222fedb74af69fff44020d025e54 |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Natural Hazards and Earth System Sciences, Vol 3, Iss 3/4, Pp 203-209 (2003) |
op_relation |
http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 1561-8633 1684-9981 https://doaj.org/article/96ea222fedb74af69fff44020d025e54 |
_version_ |
1766050929179623424 |