Welcome to Experimental Researches
of Geodynamic Processes Laboratory !
The laboratory of experimental researches of geodynamic processes was based
in 1985 (Geophysical observatory "Borok" UIPE RAS) for realization of experiments
on modeling of processes of destruction of mountain rocks and realization
of background observations. During activity the theme of laboratory extended,
as for statement of problems of modelling it was required better to understand
processes of evolution of a stress- deformation condition of actual geophysical
environment.
For the full information will select language or char-set (russian):
News and last update.
Real-time
monitoring of earth crust rigidity and seismic regime for Northern
and Southern California.The curves of the quantity of earthquakes for day, maximal
daily magnitude and changes of rigidity for various areas of Northern and Southern
California are submitted. All diagrams are resulted for the following intervals of
time: a) since 1980, b) for last 5 years, c) for last 200 days.Update:
Sep 13, 2007
Borok workshop schedule Oct 17-21, 2005: VII международная школа-семинар “Физические основы прогнозирования
разрушения горных пород”
Circular_2 Oct 17-21, 2005: VII международная школа-семинар “Физические основы прогнозирования
разрушения горных пород”
Circular_1 Oct 17-21, 2005: VII международная школа-семинар “Физические основы прогнозирования
разрушения горных пород”
Change of rigidity of an earth's crust before earthquake 2003.12.22 in San Simeon, California.
[English Russsian: Win1251KOI8r] (Add 24 Dec 2003)
Seismic regime of Southern California in relation to the crustal rigidity variationsThe Landers (southern California) destructive ( M = 7.3) earthquake of June 28, 1992 was a major seismic event of the period from 1985 through 2002. The present paper presents the results derived from the analysis of rigidity variations at the
preparation stage of the main shock. This analysis was based on a method developed by the authors for the monitoring of rigidity variations in
the seismically active layer of the crust. The method reduces to the possibility of discriminating between the brittle and viscous failure modes
using P wave first arrival patterns.Russian Journal of Earth Sciences
Vol.5, No.1, 2003. Add: 22 Jul 2003.
Brief report RFBR project N 02-05-64517 "A comparison stress field dynamics and Earth crust rigidity in the process of the large earthquake preparations and the results of the rock sample ruptures in the laboratory experiments."
[English Russsian: Win1251KOI8r] (Add 15 Jan 2003)
Mesozoic-Cenozoic crust deformation cycle of Baikal rift.Using integral information on 1352
tectonic movement vectors detected in Baikal graben
(recording stations were uniformly spaced around the perimeter
of the lake's water area), the authors calculated stress
characteristics for six phases Mz-Kz deformation cycle of the
rift's crust.
[English Russsian: Win1251KOI8r]. Add: 5 Nov 2002.
Project "A comparison stress field dynamics and Earth crust rigidity in the process of the large earthquake
preparations and the results of the rock sample ruptures in the laboratory
experiments" sponsored by RFBR (No 02-05-64517). Add: 5 Apr 2002.
Background Seismicity As an Indicator of a Crustal Deformational Process.
Journal of Earthquake Prediction Research 5 (1996) 535—545.
(HTML version). A method is proposed for diagnostics of the stress—strain state of the earth's crust in seismoactive regions based on destruction types (brittle or viscous), which are recognized by the character of the first arrival of P—waves of weak earthquakes. (Add 4 May 2001)
A comparison analysis of the low-frequency
seismic signal foregoing the main shock and the acoustic signal preceding
a rock rupture in laboratory experiments.
The properties of the low-frequency seismic signals foregoing the main shock (LFFS)
and similar properties of the acoustic signal preceded the main rock rupture (ASPR)
in the laboratory experiments are discussed. The LFFS parameters depend on the
regional characteristics (the oscillator size, features of the environment,
structure of the Earth crust). The ASPR parameters for the most part depend on
value and on asymmetry of the lateral compression (for the "stick-slip" model).
The instability of the occurrence of the LFFS and the ASPR is noted. The LFFS signals
are found only for 9-19 percent of large (M>5.5) earthquakes.
Post address: 152742 Geophysical observatory "Borok", Borok, Nekouz, Yaroslavl, Russia
Fax, phone: +7-(08547)-24-024
Email:ERGP laboratory
The laboratory of experimental researches of geodynamic processes was based
in 1985 (Geophysical observatory "Borok" UIPE RAS) for realization of experiments
on modeling of processes of destruction of mountain rocks and realization
of background observations. During activity the theme of laboratory extended,
as for statement of problems of modelling it was required better to understand
processes of evolution of a stress- deformation condition of actual geophysical
environment.
