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Geotechnical, Geophysical and Geodetical Surveys

 
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The objective is to provide a 3D detailed description of the large-scale soil structure of the whole basin, in terms of precise determination of the geometry of sediments/bedrock interface, lateral soil and geology variation, and dynamic soil properties for all soil formations.

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Geotechnical Survey: 4 or 6 new geotechnical boreholes in the EW direction with in situ (SPT, CPT, CH, DH) and laboratory (CTX, RC) tests and measurements.

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Geophysical Survey: in order to complete the 3D soil structure, the post surveys performed in N-S direction are extended to the EW direction with geoelectrical tomographies, refraction, spectral analysis of surface waves and microtremor measurements.  

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Geodetical Survey: The geodetic control network already established in the Mygdonian Graben will be remeasured using  high precision GPS technology. The existing network consists of 20 geodetic stations covering the whole area and was measured with GPS in 1994 and 1997. 3D-adjustments of the network will be used for the computation of point coordinates that will then be compared to the 1994 and 1997 data.

 

 

Cross-section in NS axis of the valley. Detailed description of the stratigraphy and the dynamic properties of soil layers may be found in http://geo.civil.auth.gr/euroseis

Layout of the measurements to be performed early in the second year along the E-W axis of the basin

 


 

 

20 point geodetical network.

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 Copyright 2003-2004 by Aristotle University Thessaloniki, Dept. of Civil Eng., Lab. of Soil Mechanics and Foundation Eng.. All rights reserved.
Last Update: 27/02/04.