Seismological Exploration Of The Milos Geothermal Reservoir, Greece

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Journal Article: Seismological Exploration Of The Milos Geothermal Reservoir, Greece

Abstract
Monitoring the natural seismicity of Milos island over a four month period led to the conclusion that the microseismic activity is concentrated mainly in the central-eastern part of the island in the depth range from 5 - 8 km. Tomographic inversion of 90 selected events led to a refined velocity-depth distribution. The fluctuation of velocities appears to be depth-dependent; a remarkable horizontal change of velocities was found for the upper few kilometres of the crust, while at greater depths the crustal velocity is more homogeneous. Minima of the vp/vp-ratio coincide with the locations of the production wells in the Zefyria Plain and close to Adamas, thus indicating higher temperatures in these areas. Faultplane solutions indicate that tensional stress in a NE-SW direction is the actual cause of the seismic activity. The frequency-magnitude relation indicates tectonic activities rather than volcanic.

Authors 
N. Ochmann, D. Hollnack and J. Wohlenberg








Published Journal 
Geothermics, 1989





DOI 
10.1016/0375-6505(89)90057-6


 

Citation

N. Ochmann,D. Hollnack,J. Wohlenberg. 1989. Seismological Exploration Of The Milos Geothermal Reservoir, Greece. Geothermics. (!) .