Research output: Contribution to journal › Article › peer-review
Correction of the electromagnetic monitoring data for tidal variations of apparent resistivity. / Saraev, Alexander K.; Pertel, Mikhail I.; Malkin, Zinovy M.
In: Journal of Applied Geophysics, Vol. 49, No. 1-2, 01.01.2002, p. 91-100.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Correction of the electromagnetic monitoring data for tidal variations of apparent resistivity
AU - Saraev, Alexander K.
AU - Pertel, Mikhail I.
AU - Malkin, Zinovy M.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - The use of the ELF (extremely low frequency) radio station "Zevs" for the study of the stress-strain state of geological media is considered. Analysis of prior research on the connection between tidal phenomena and apparent resistivity ρa variations at earthquake prediction sites are made. In the ELF range experimental measurements of artificial electromagnetic field impedance and the results of calculation of tidal deformations are considered. A high degree of correlation of ρa values and vertical deformations of the Earth surface △H are noted. Diurnal ρa changes of 7% due to tidal phenomena, were recorded with measurements accuracy of ±0.6%. To increase the reliability of earthquake prediction it is necessary to correct the electromagnetic monitoring data for tidal effects using correlation equations between ρa and △H.
AB - The use of the ELF (extremely low frequency) radio station "Zevs" for the study of the stress-strain state of geological media is considered. Analysis of prior research on the connection between tidal phenomena and apparent resistivity ρa variations at earthquake prediction sites are made. In the ELF range experimental measurements of artificial electromagnetic field impedance and the results of calculation of tidal deformations are considered. A high degree of correlation of ρa values and vertical deformations of the Earth surface △H are noted. Diurnal ρa changes of 7% due to tidal phenomena, were recorded with measurements accuracy of ±0.6%. To increase the reliability of earthquake prediction it is necessary to correct the electromagnetic monitoring data for tidal effects using correlation equations between ρa and △H.
KW - Apparent resistivity
KW - Electromagnetic soundings
KW - Tide
UR - http://www.scopus.com/inward/record.url?scp=0036112554&partnerID=8YFLogxK
U2 - 10.1016/S0926-9851(01)00101-X
DO - 10.1016/S0926-9851(01)00101-X
M3 - Article
AN - SCOPUS:0036112554
VL - 49
SP - 91
EP - 100
JO - Journal of Applied Geophysics
JF - Journal of Applied Geophysics
SN - 0926-9851
IS - 1-2
ER -
ID: 35942119