Marine resistivity tomography prior excavation works in port construction

Apostolopoulos, G; Amolochitis, G; Stamataki, S

dc.contributor.author	Apostolopoulos, G	en
dc.contributor.author	Amolochitis, G	en
dc.contributor.author	Stamataki, S	en
dc.date.accessioned	2014-03-01T02:51:07Z
dc.date.available	2014-03-01T02:51:07Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35380
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-55849148990&partnerID=40&md5=fbfea0b27ddff0cb92f0b1b354c696d1	en
dc.subject.other	Bed-rocks	en
dc.subject.other	Electrode configurations	en
dc.subject.other	Electrode distances	en
dc.subject.other	Marine cables	en
dc.subject.other	Port constructions	en
dc.subject.other	Resistivity tomographies	en
dc.subject.other	Resistivity values	en
dc.subject.other	RMS errors	en
dc.subject.other	Schlumberger	en
dc.subject.other	Sea bottoms	en
dc.subject.other	Signal-to-Noise ratios	en
dc.subject.other	Sudden changes	en
dc.subject.other	Well datums	en
dc.subject.other	Diagnostic radiography	en
dc.subject.other	Electrolysis	en
dc.subject.other	Excavation	en
dc.subject.other	Exhibitions	en
dc.subject.other	Medical imaging	en
dc.subject.other	Poles	en
dc.subject.other	Ports and harbors	en
dc.subject.other	Signal to noise ratio	en
dc.subject.other	Tomography	en
dc.subject.other	Ocean structures	en
dc.title	Marine resistivity tomography prior excavation works in port construction	en
heal.type	conferenceItem	en
heal.publicationDate	2007	en
heal.abstract	The detection of bedrock relief under the sea bottom is of great importance for the excavation works in port construction as well as for the foundation of various installations. Marine resistivity tomography profiles, properly positioned to cover the area under investigation and to avoid various obstacles, can provide this information. Precise knowledge of bathymetry is required in order to give reliable results. Well data for reference are valuable in defining and verifying the sudden changes of resistivity values in the sections. The Schlumberger electrode configuration is preferred with its more efficient signal-to-noise ratio. Pole-Pole can give information which is less accurate in horizontal layering but offers deeper detection. The RMS error in interpretation takes higher values when the sea bottom is deeper. Marine cable with 3m electrode distance and 32 lead takeouts is easily elaborated and effective to detect bedrock relief for depths of sea bottom: 5-15m and depth of investigation for Schlumberger array 20m and polepole 40m.	en
heal.journalName	Society of Petroleum Engineers - 69th European Association of Geoscientists and Engineers Conference and Exhibition 2007 - ""Securing the Future""	en
dc.identifier.volume	1	en
dc.identifier.spage	345	en
dc.identifier.epage	349	en