Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/750

Authors: Pankratov, O. V.*
Kuvshinov, A. V.*
Avdeev, D. B.*
Shneyer, V. S.*
Trofimov, I. L.*
Title: Ez-response as a monitor of a Baikal rift fault electrical resistivity: 3D modelling studies
Issue Date: 2004
Series/Report no.: 47 (1)
URI: http://hdl.handle.net/2122/750
Keywords: Baikal rift zone
electromagnetic monitoring
transfer functions
resistivity changes ofthe fault
Abstract: 3D numerical studies have shown that the vertical voltage above the Baikal deep-water fault is detectable and that respective transfer functions, Ez-responses, are sensitive to the electrical resistivity changes of the fault, i.e. these functions appear actually informative with respect to the resistivity «breath» of the fault. It means that if the fault resistivity changed, conventional electromagnetic instruments would be able to detect this fact by measurement of the vertical electric field, Ez, or the vertical electric voltage just above the fault as well as horizontal magnetic field on the shore. Other electromagnetic field components (Ex, Ey, Hz) do not seem to be sensitive to the resistivity changes in such a thin fault (as wide as 500 m). On the other hand, such changes are thought to be able to indicate a change of a stress state in the earthquake preparation zone. Besides, the vertical profile at the bottom of Lake Baikal is suitable for electromagnetic monitoring of the fault electrical resistivity changes. Altogether, the vertical voltage above the deep-water fault might be one of earthquake precursors.
Appears in Collections:04.05.05. Main geomagnetic field
Annals of Geophysics

Files in This Item:

File SizeFormatVisibility
17Pankratov.pdf910.39 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA