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Proceedings Paper

Cross validation of geotechnical and geophysical site characterization methods: near surface data from selected accelerometric stations in Crete (Greece)
Author(s): C. Loupasakis; P. Tsangaratos; D. Rozos; Th. Rondoyianni; A. Vafidis; G. Kritikakis; M. Steiakakis; Z. Agioutantis; A. Savvaidis; P. Soupios; I. Papadopoulos; N. Papadopoulos; A. Sarris; M.-D. Mangriotis; U. Dikmen
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Paper Abstract

The specification of the near surface ground conditions is highly important for the design of civil constructions. These conditions determine primarily the ability of the foundation formations to bear loads, the stress – strain relations and the corresponding settlements, as well as the soil amplification and corresponding peak ground motion in case of dynamic loading. The static and dynamic geotechnical parameters as well as the ground-type/soil-category can be determined by combining geotechnical and geophysical methods, such as engineering geological surface mapping, geotechnical drilling, in situ and laboratory testing and geophysical investigations. The above mentioned methods were combined, through the Thalis ″Geo-Characterization″ project, for the site characterization in selected sites of the Hellenic Accelerometric Network (HAN) in the area of Crete Island. The combination of the geotechnical and geophysical methods in thirteen (13) sites provided sufficient information about their limitations, setting up the minimum tests requirements in relation to the type of the geological formations. The reduced accuracy of the surface mapping in urban sites, the uncertainties introduced by the geophysical survey in sites with complex geology and the 1D data provided by the geotechnical drills are some of the causes affecting the right order and the quantity of the necessary investigation methods. Through this study the gradual improvement on the accuracy of site characterization data is going to be presented by providing characteristic examples from a total number of thirteen sites. Selected examples present sufficiently the ability, the limitations and the right order of the investigation methods.

Paper Details

Date Published: 19 June 2015
PDF: 9 pages
Proc. SPIE 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), 95351T (19 June 2015); doi: 10.1117/12.2192673
Show Author Affiliations
C. Loupasakis, National Technical Univ. of Athens (Greece)
P. Tsangaratos, National Technical Univ. of Athens (Greece)
D. Rozos, National Technical Univ. of Athens (Greece)
Th. Rondoyianni, National Technical Univ. of Athens (Greece)
A. Vafidis, Technical Univ. of Crete (Greece)
G. Kritikakis, Technical Univ. of Crete (Greece)
M. Steiakakis, Technical Univ. of Crete (Greece)
Z. Agioutantis, Technical Univ. of Crete (Greece)
A. Savvaidis, Institute of Engineering Seismology and Earthquake Engineering (Greece)
P. Soupios, Technological Educational Institute of Crete (Greece)
I. Papadopoulos, Technological Educational Institute of Crete (Greece)
N. Papadopoulos, Foundation for Research and Technology - Hellas (Greece)
A. Sarris, Foundation for Research and Technology - Hellas (Greece)
M.-D. Mangriotis, Heriot-Watt Univ. (United Kingdom)
U. Dikmen, Ankara Univ. (Turkey)


Published in SPIE Proceedings Vol. 9535:
Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015)
Diofantos G. Hadjimitsis; Kyriacos Themistocleous; Silas Michaelides; Giorgos Papadavid, Editor(s)

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