Characteristics of marine seismic survey sounds in the Beaufort Sea

1988 ◽  
Vol 83 (6) ◽  
pp. 2246-2254 ◽  
Author(s):  
Charles R. Greene ◽  
W. John Richardson
Keyword(s):  
Beaufort Sea ◽  
Seismic Survey ◽  
Marine Seismic

On the reconstruction of the shape of a seismic streamer

Geophysics ◽  
2010 ◽  
Vol 75 (1) ◽  
pp. H1-H6
Author(s):  
Bruno Goutorbe ◽  
Violaine Combier
Keyword(s):  
A Priori ◽  
Synthetic Data ◽  
Seismic Survey ◽  
Random Errors ◽  
Generalized Inversion ◽  
Reconstruction Methods ◽  
Seismic Acquisition ◽  
Marine Seismic ◽  
Gps Devices ◽  
Vessel Reconstruction

In the frame of 3D seismic acquisition, reconstructing the shape of the streamer(s) for each shot is an essential step prior to data processing. Depending on the survey, several kinds of constraints help achieve this purpose: local azimuths given by compasses, absolute positions recorded by global positioning system (GPS) devices, and distances calculated between pairs of acoustic ranging devices. Most reconstruction methods are restricted to work on a particular type of constraint and do not estimate the final uncertainties. The generalized inversion formalism using the least-squares criterion can provide a robust framework to solve such a problem — handling several kinds of constraints together, not requiring an a priori parameterization of the streamer shape, naturally extending to any configuration of streamer(s), and giving rigorous uncertainties. We explicitly derive the equations governing the algorithm corresponding to a marine seismic survey using a single streamer with compasses distributed all along it and GPS devices located on the tail buoy and on the vessel. Reconstruction tests conducted on several synthetic examples show that the algorithm performs well, with a mean error of a few meters in realistic cases. The accuracy logically degrades if higher random errors are added to the synthetic data or if deformations of the streamer occur at a short length scale.

Marine Seismic Survey, Lake Ontario

1967 ◽  
Author(s):  
G D Hobson ◽  
E Holzl
Keyword(s):  
Lake Ontario ◽  
Seismic Survey ◽  
Marine Seismic

No evidence of damage to the soft tissue or skeletal integrity of mesophotic corals exposed to a 3D marine seismic survey

2018 ◽  
Vol 129 (1) ◽  
pp. 8-13 ◽  
Author(s):  
Andrew Heyward ◽  
Jamie Colquhoun ◽  
Edward Cripps ◽  
Denise McCorry ◽  
Marcus Stowar ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Seismic Survey ◽  
Marine Seismic ◽  
Skeletal Integrity

GEOPHYSICAL EXPLORATION IN TORRES STRAIT

1965 ◽  
Vol 5 (1) ◽  
pp. 188
Author(s):  
E. W. Vind ◽  
C. R. Harwood
Keyword(s):  
Seismic Survey ◽  
Survey Area ◽  
The South ◽  
North East ◽  
The North ◽  
Geophysical Surveys ◽  
Arafura Sea ◽  
Cape York ◽  
Torres Strait ◽  
Marine Seismic

Torres Strait is the narrow waterway on the Continental Shelf which connects the Arafura Sea to the Coral Sea and separates the Cape York Peninsula from South-western Papua. Within Torres Strait and the Arafura Sea the marine seismic survey area specifically discussed here covers the north-western part of Authority to Prospect 104P held by Marathon Petroleum Australia Ltd. Except for a few small islands this area is covered by a shallow tropical sea not more than 160 feet deep which is studded with coral reefs.Four regional structural features influence the area. These are the Cape York-Oriomo Ridge to the east, the Carpentaria Basin to the south and the Morehead and Papuan Basins to the north. These features are indicated by regional geology and have been confirmed by the combined interpretations of reconnaissance geophysical surveys conducted by various exploration organisations during the past 30 years.The A.T.P. 104P (West) Marine Seismic Survey, consisting of 618 miles of subsurface coverage, was carried out for Marathon between November 8 and November 28, 1964.Several operational problems prevented completion of the survey as originally planned. Shallow water and reefing prevented shooting in the north-east portion of the proposed area.Shooting 300 per cent subsurface coverage commenced in the south-eastern part of the survey area, but, due to shallow basement at less than one second, multiple coverage was not feasible. Production shooting which gave 100 per cent subsurface coverage on the short spreads was continued throughout the remainder of the survey.Two reflection horizons and a resultant isochron were mapped in the area. A "deep" reflector is interpreted as originating from granitic basement, while a "shallow" reflector is tentatively correlated with a horizon in the Cretaceous section.The "shallow" horizon mapped is essentially conformable with the "deep" horizon. Both show a regional west dip with thinning of section to the east. Some north and south components of the regional west dip are established. The resultant isochron comparisons based on this work appear too limited in scope to establish any definite local structural control of deposition.

Modelled and measured sound levels from a seismic survey in the Canadian Beaufort Sea

2013 ◽  
Vol 133 (5) ◽  
pp. 3398-3398 ◽  
Author(s):  
Marie-Noël R. Matthews ◽  
Alexander O. MacGillivray
Keyword(s):  
Beaufort Sea ◽  
Seismic Survey ◽  
Sound Levels

First Broadband, Full Azimuth Marine Seismic Survey in Malaysia: Deployment of Two Cutting Edge Acquisition Techniques

2013 ◽  
Author(s):  
Sandeep K. Chandola ◽  
Michelle Tham ◽  
Koon Hong Ho ◽  
Low Cheng Foo ◽  
Tayallen Velayatham ◽  
...  
Keyword(s):  
Cutting Edge ◽  
Seismic Survey ◽  
Marine Seismic
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