Marine resistivity tomography for coastal engineering applications in Greece

Apostolopoulos, G

dc.contributor.author	Apostolopoulos, G	en
dc.date.accessioned	2014-03-01T02:09:30Z
dc.date.available	2014-03-01T02:09:30Z
dc.date.issued	2012	en
dc.identifier.issn	00168033	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29858
dc.subject	Engineering	en
dc.subject	Marine	en
dc.subject	Resistivity	en
dc.subject	Tomography	en
dc.subject.other	Bedrock relief	en
dc.subject.other	Construction companies	en
dc.subject.other	Drilling data	en
dc.subject.other	Engineering applications	en
dc.subject.other	Geophysical measurements	en
dc.subject.other	High resistivity	en
dc.subject.other	Loose materials	en
dc.subject.other	Marine	en
dc.subject.other	New constructions	en
dc.subject.other	Resistivity tomography	en
dc.subject.other	Resistivity values	en
dc.subject.other	Water bottom	en
dc.subject.other	Coastal engineering	en
dc.subject.other	Construction industry	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Engineering	en
dc.subject.other	Excavation	en
dc.subject.other	Geophysics	en
dc.subject.other	Tomography	en
dc.subject.other	bathymetry	en
dc.subject.other	bedrock	en
dc.subject.other	bridge	en
dc.subject.other	coastal engineering	en
dc.subject.other	drilling	en
dc.subject.other	electrical resistivity	en
dc.subject.other	geomorphology	en
dc.subject.other	geophysics	en
dc.subject.other	tomography	en
dc.subject.other	Attica	en
dc.subject.other	Greece	en
dc.subject.other	Lavrion	en
dc.title	Marine resistivity tomography for coastal engineering applications in Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.1190/geo2011-0349.1	en
heal.identifier.secondary	http://dx.doi.org/10.1190/geo2011-0349.1	en
heal.publicationDate	2012	en
heal.abstract	The marine resistivity tomography method can be useful for coastal engineering applications through the use of immersion cables, laid on the water bottom, thus achieving a deeper and more detailed detection of the formations underneath. Careful positioning of the profiles related to the available geologic, geomorphological, bathymetric, and drilling data and to the requirements of engineers, can give thicknesses of loose material as well as the bedrock relief. The formations and their interfaces are clearly defined either by calibration with available drilling data or by high resistivity changes which indicate discontinuities with resistivity values related to permeability and saline water presence. Two case studies are under examination. The first concerns the preservation of an old iron bridge in Lavrion Port with reinforcement and new foundations. Here, the geophysical investigation detects the formation on which the bridge was founded, as well as the loose material above it. The second case study concerns geophysical investigation asked by a construction company for the marine excavation work needed in the new Mesta port. Here, the geophysical measurements with the detected formations give valuable information with respect to the volume of material, equipment, time and cost of excavation as well as where the foundations will be laid for new constructions. © 2012 Society of Exploration Geophysicists.	en
heal.journalName	Geophysics	en
dc.identifier.doi	10.1190/geo2011-0349.1	en
dc.identifier.volume	77	en
dc.identifier.issue	3	en
dc.identifier.spage	B97	en
dc.identifier.epage	B105	en