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Tidal height and water velocity from PIES: Processing of shallow and deep water examples

Authors
Carsten Udengaard (FairfieldNodal) | Kenneth Craft (FairfieldNodal)
Document ID
SEG-2018-2993385
Publisher
Society of Exploration Geophysicists
Source
2018 SEG International Exposition and Annual Meeting, 14-19 October, Anaheim, California, USA
Publication Date
2018
Document Type
Conference Paper
Language
English
Copyright
2018. Society of Exploration Geophysicists
Keywords
Oceanography, Shallow, Velocity analysis, Time-lapse, Deepwater
Downloads
1 in the last 30 days
10 since 2007
Show more detail
Price: USD 21.00

Processing of Ocean Bottom Node (OBN), or any other marine acquisition type, surveys requires accurate knowledge of tidal height and acoustic water velocity variations. Pressure Inverted Echo Sounder (PIES) units are used in many OBN surveys to provide direct in field measurements to needed to compute tides and acoustic water velocity on a predetermined time interval. In order to determine these values accurately additional information is required, such as barometric pressure, depth dependent water pressure, temperature and conductivity. Combining the information from multiple field measurements allows for accurate determination of tide height and water velocity. Deep water and shallow water examples are used to illustrate the processing similarities and differences required due to proximity differences to the sea surface.

Presentation Date: Monday, October 15, 2018

Start Time: 1:50:00 PM

Location: 204C (Anaheim Convention Center)

Presentation Type: Oral

File Size  846 KBNumber of Pages   5

Craft,K.,C.Udengaard,C.Keller,M.Harkness,D.Gore,S.Chakraborty,P.Ariston,J.van Gestel, andQ.Li,2016,4D compliant processing of OBN data: Case histories of the Atlantis and Thunder Horse fields, deepwater Gulf of Mexico:86th Annual International Meeting, SEG,Expanded Abstracts,5495–5499,10.1190/segam2016-13870135.1.

Fofonoff,N. P., andR. C.Millard,1983,Algorithms for computations of fundamental properties of seawater.UNESCO Technical Papers in Marine Science,44,53.

Udengaard,C. R., andK.Craft,2012,Analysis of water column complexity in OBN data:74th Annual International Conference and Exhibition, EAGE,Extended Abstracts,10.3997/2214-4609.20148387.

Wang,K.,S.Dunn,J.Ward, andP.Hatchell,2015,Direct measurement of water velocity and tidal variations for improved 4D repeatability in marine seismic acquisition.First Break,33,73–79.

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