Evidence of seismicity induced by water level changes at the Mosul Dam reservoir and implications on the hydraulic diffusivity

Nabeel Hameed Al-Saigh

Abstract


The relationship between Reservoir level and earthquake frequency at Mosul Dam's Reservoir shows an evident increases in seismicity following the yearly maxima in water level, with growths of epicentral area (hydraulic diffusivity), at about 9.3x104 cm2/sec. This value corresponds to permeability of about 8.4 x 10-11 cm2. Seismicity concentration with time and space of their occurrences was obvious. A trend of 75.71 m/km of seismicity concentration towards the east and 9.676 m/km with depth was observed.


Keywords


Keywords: Reservoir, seismicity, diffusivity, permeability

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References


­Al-Saigh N.H. 2008. Seismicity of Mosul dam reservoir. Iraqi Journal of Earth Sciences: 8, 11-16.

Al-Saigh N.H. 2010. The Mechanism of Induced Seismicity at Mosul Reservoir Based on the First Motion Analysis. Journal Geological Society of India: 76, 399-402.

Bell M.L., Nur A. 1978. Strength changes due to reservoir-induced pore pressure and stresses an application to Lake Oroville. Journal Geophysical Research: 83, 4469-83.

Brace W.F. 1980. Permeability of crystalline and argillaceous rocks. International Journal of Rock Mechanics. Mining Science and Geomechanics Abstract: 17, 241-251.

Chen L., Talwani P. 2001. Renewed seismicity near Monticello reservoir, south Carolina, 1996-1999. Bulletin of the Seismological Society of America: 91, 94-101.

Do Nascimento A.F., Cowie P.A., Lunn R.J., Pearce R.G. 2004. Spatio-temporal evolution of induced seismicity at Acu reservoir, NE Brazil. Geophysical Journal International: 158, 1041-1052.

Hirata T. 1987. Omori's power law aftershock sequences of microfracturing in rock                       fracture experiment. Journal of Geophysical Research: 92, 6215-6221.

 Hirata T., Imoto M. 1991. Multifractal analysis of spatial distribution of microearthquakes in the Kanto region. Geophysical Journal International: 107, 155-162.

Kassab I.M., Abbas M.J. (Edit). 1987. The Regional Geology of Iraq Tectonism Magnatism and Metamorphism. Internal Report Directorate of Geological Survey and Mineral Investigation Baghdad.

Mukhopadhyay B., Acharyya A., Mukhopadhyay M., Dasgupta S. 2010. Relation between earthquake swarm, rifiting history, magmatism and pore pressure diffusion-An example from south Andaman Sea, India. Journal Geological Society of India: 76, 164-170.

Pandey A.P. 2006. Triggering earthquakes of Koyna-Warna region. PhD thesis, Osmania University, India, 144pp.

Scholz C.H., Sykes L.R., Aggarwal Y.P. 1973. Earthquake prediction: A physical basis. Science New York: 181, 803-810.

Simpson D.W., Leith W.S., Scholz C.H. 1988. Two types of reservoir –induced seismicity. Bulletin Seismological Society of America: 78 (6), 2025-2040.

Talwani P., Acree S. 1985. Pore pressure diffusion and the mechanism of reservoir-induced seismicity.  Pure and Applied Geophysics: 122, 947-965.

Talwani P. 1997. On the nature of reservoir induced seismicity. Pure and Applied Geophysics: 150, 473-492.

Tawfiq J.M., Domas J. 1977. The regional geological mapping of Dohuk-Ainzalah area. Unpublished Report State Organization of Mineral Library Baghdad, Report 837.

Wang J.H., Lee C.W. 1996. Multifractal measures of earthquakes in west Taiwan. Pure and Applied Geophysics: 146, 131-145.                                                        


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