Dynamics of crustal fluids in the western part of the Bohemian Massif as a probe of the stress changes

 

Grant No.:

IAA300120905

Grant Agency:

Grant Agency of the Academy of Sciences of the CR (GAAVČR)

Resolved in:

2009 - 2012

Principal investigator:

Doc. RNDr. Tomáš Fischer, Ph.D., Institute of Geophysics of the AS CR, v. v. i.
Doc. RNDr. Oldřich Novotný, CSc., Department of Seismology, IRSM AS CR, v.v.i.
doc. RNDr. Jan Vilhelm, CSc., Charles University in Prague, Faculty of Science

Co-investigators:

Mgr. Renata Gaždová, Department of Seismology, IRSM AS CR, v.v.i.

Description:

Analysis of seismogenic stress variations and their effect to crustal fluids is often complicated due to the singular and irregular occurrence of earthquakes and unknown origin of the associated stress changes, which lie deep in the crust. Utilizing external stress variations (tidal force and atmospheric pressure) whose source is known and which exert permanent load upon the rocks and induce similar changes of their permeability and other parameters seems a promising alternative. We plan to conduct monitoring of deep CO2 discharge and of groundwater level in the seismoactive western part of the Bohemian Massif and analyze the correlation and phase of the external stress field, CO2 discharge and groundwater level. We will derive numerical model of the effect of external stress field upon the fluctuations of crustal fluids. The residual anomalies will be statistically evaluated with respect to the local seismicity and passage of seismic waves from distant earthquakes.

ISVAV: (What is it?)

Project in The Research and Development and Innovation System of the Czech Republic (in Czech only)
 
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