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)...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2003
|
Subjects: | |
Online Access: | http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/article/96ea222fedb74af69fff44020d025e54 |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:96ea222fedb74af69fff44020d025e54 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:96ea222fedb74af69fff44020d025e54 2023-05-15T16:58:46+02:00 Preseismic ULF electromagnetic effect from observation at Kamchatka O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev 2003-01-01 http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/article/96ea222fedb74af69fff44020d025e54 en eng Copernicus Publications 1561-8633 1684-9981 http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/article/96ea222fedb74af69fff44020d025e54 undefined Natural Hazards and Earth System Sciences, Vol 3, Iss 3/4, Pp 203-209 (2003) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2003 fttriple 2023-01-22T18:10:55Z 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 Ks 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 Kp 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 Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir O. Molchanov A. Schekotov E. Fedorov G. Belyaev E. Gordeev Preseismic ULF electromagnetic effect from observation at Kamchatka |
topic_facet |
geo envir |
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 Ks 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 Kp 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 |
http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf 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 |
1561-8633 1684-9981 http://www.nat-hazards-earth-syst-sci.net/3/203/2003/nhess-3-203-2003.pdf https://doaj.org/article/96ea222fedb74af69fff44020d025e54 |
op_rights |
undefined |
_version_ |
1766050860454903808 |