MIDDLE LATITUDE LF (40 KHZ) PHASE VARIATIONS ASSOCIATED WITH EARTHQUAKES FOR QUIET AND DISTURBED GEOMAGNETIC CONDITIONS
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dc.contributor.author | Rozhnoi A. | |
dc.contributor.author | Solovieva M.S. | |
dc.contributor.author | Molchanov O.A. | |
dc.contributor.author | Hayakawa M. | |
dc.date.accessioned | 2022-11-03T10:21:07Z | |
dc.date.available | 2022-11-03T10:21:07Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=13455611 | |
dc.identifier.citation | Physics and Chemistry of the Earth, Parts A/B/C, 2004, 29, 4-9, 589-598 | |
dc.identifier.issn | 1474-7065 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/39364 | |
dc.description.abstract | The phase (P) and amplitude (A) anomalies in subionospheric LF signal (40 kHz) along the path Japan–Kamchatka of 2300 km have been studied for the data observed by means of a digital OminiPAL receiver for 2 years. The empirical model of background P and A daily variations for quiet and disturbed geomagnetic conditions in the absence of seismic activity is developed. We pay special attention to the P and A features during large magnetic storms. A sensitivity threshold of LF signal to deforming influence of the geomagnetic and seismic factors is defined. Two cases of bay-like behavior of LF phase and amplitude in nighttime are described as a clear earthquake precursor of LF signal. We have found from the statistical study that LF signal effect is observed only for earthquakes with M⩾5.5 and we discuss the possible mechanisms of the effect. | |
dc.subject | earthquakes | |
dc.title | MIDDLE LATITUDE LF (40 KHZ) PHASE VARIATIONS ASSOCIATED WITH EARTHQUAKES FOR QUIET AND DISTURBED GEOMAGNETIC CONDITIONS | |
dc.type | Статья |
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