Earth-prints: Some results of tectonomagnetic monitoring in the epicentral zone of the M7.5 Altay earthquake, September 27, 2003

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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3510

Authors:	Djadkov, P. G.^* Mikheev, O. A.^* Minenko, M. I.^* Sobolev, O. A.^*
Title:	Some results of tectonomagnetic monitoring in the epicentral zone of the M7.5 Altay earthquake, September 27, 2003
Issue Date:	Feb-2007
Series/Report no.:	1/50 (2007)
URI:	http://hdl.handle.net/2122/3510
Keywords:	tectonomagnetic monitorng piezomagnetic model aftershock process stress change
Abstract:	We report tectonomagnetic results from the epicentral area of the 27 September 2003 Ms=7.5 earthquake in the Altay mountains, southern West Siberia. The results were obtained in the first three survey campaigns in early October 2003, late November 2003, and latest May-early June 2004 using an array of one continuous-measurement station and fifteen repeated-survey sites. Changes in total geomagnetic field associated with seismic activity were mostly of regional scale and usually did not exceed 1.5 nT. The M=4.5 aftershock of 31 May 2004 was accompanied by an anomaly of 1-2 nT. The location of the anomaly within highly magnetic rocks can be evidence of its piezomagnetic origin.
Appears in Collections:	04.06.06. Surveys, measurements, and monitoring Annals of Geophysics