Geoscience Reference
In-Depth Information
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Azimuth
(conventional)
receivers
shots
Multi-Azimuth
Streamer
Seismic
shots
•
Efficient extension of
established techniques
•
All conventional processing
can be applied to individual
azimuths
•
Combine azimuths to
enhance illumination and S/N
Fig. A3.1
Multi-Azimuth Seismic (MAZ) consists of several (two or more) conventional marine
seismic surveys shot in different directions over the same area. This technique is suitable for short
wavelength imaging problems (small obstacles).
Offset
source vessel
shots
shots
receivers
Ocean Bottom Seismic Nodes
shots
Towed Streamer Operations
Separate Source and Receiver Vessels
Autonomous Ocean Bottom Seismic
Nodes and a source vessel
Fig. A3.2
Wide Azimuth marine seismic can be obtained through the use of additional shooting
boats with conventional towed streamer data or with ocean bottom cables or nodes. This type of
geometry is thought to be most suitable for larger wavelength imaging problems (e.g. salt bodies).
