Cross validation of geotechnical and geophysical site characterization methods: near surface data from selected accelerometric stations in Crete (Greece)

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

doi:10.1117/12.2192673

19 June 2015 Cross validation of geotechnical and geophysical site characterization methods: near surface data from selected accelerometric stations in Crete (Greece)

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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Proceedings Volume 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015); 95351T (2015) https://doi.org/10.1117/12.2192673
Event: Third International Conference on Remote Sensing and Geoinformation of the Environment, 2015, Paphos, Cyprus

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.

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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, and U. Dikmen "Cross validation of geotechnical and geophysical site characterization methods: near surface data from selected accelerometric stations in Crete (Greece)", Proc. SPIE 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), 95351T (19 June 2015); https://doi.org/10.1117/12.2192673

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KEYWORDS

Associative arrays

Geology

Wave propagation

Motion estimation

Earthquakes

Electromagnetism

Environmental sensing

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