Authors / CoAuthors
Jones, L.E.A.
Abstract
The survey was undertaken as a collaboration between Geoscience Australia and the Australian Institute of Marine Science (AIMS). The purpose was to acquire geophysical and biophysical data on shallow (less than 100 m water depth) seabed environments within two targeted areas in the Petrel Sub-basin to support investigation for CO2 storage potential in these areas. Sub bottom profiler data were acquired using a sparker source and a 24 channel streamer, and processed as shallow, high resolution, multi-channel seismic reflection data.
Product Type
dataset
eCat Id
75061
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- Marine DataSub bottom profiles
- ( Theme )
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- CO2 capture
- ( Theme )
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- marine survey
- ( Theme )
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- seismic reflection
- ( Theme )
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- seismic sections
- ( Theme )
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- marine
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- AU-NT
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Marine Geoscience
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- Published_External
Publication Date
2012-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
Acquisition and processing of the sub bottom profiler data is summarised in the 40 card EBCDIC reel header in each SEG-Y file, according to the SEG-Y standard, and reproduced below for line GA0335_007. C1 FINAL SUB-BOTTOM PROFILER DATA PROCESSED BY GEOSCIENCE AUSTRALIA AUGUST 2012 C2 DATA ACQUIRED BY GEOSCIENCE AUSTRALIA ON AIMS RESEARCH VESSEL SOLANDER C3 SURVEY NO. : GA0335 SURVEY NAME : PETREL SUB BASIN MARINE C4 LINE NO. : GA0335_007 GPS HEADING : 235 DEGREES C5 RECORDING PARAMETERS C6 SYSTEM : GEOMETRICS MARINE DATE RECORDED : MAY 2012 C7 RECORDING GAIN: CHAN 1-16 0 dB, CHAN 17-24 12 dB C8 RECORDING FILTERS : LOW-CUT 0 HZ, HIGH-CUT 0 HZ, NOTCH OUT C9 SAMPLE RATE : 0.25 MS RECORD LENGTH : 0.5 s C10 NO. CHANNELS : 24 DATA FORMAT : SEGY Revision 0 ON DISK C11 SOURCE TYPE : SQUID 2000 SPARKER, CSP-D GENERATOR AT 2000 JOULES (Hi 10) C12 SOURCE OFFSET : 10 M PERPENDICULAR SOURCE LAYBACK : 20 M C13 SOURCE DEPTH : 0.5 M (APPROX) SP INTERVAL : 6.25 M C14 CABLE MODEL : GEOMETRICS GEOEEL GROUP INTERVAL : 3.125 M C15 CABLE LAYBACK : 40 M CABLE DEPTH : 2.5 M (APPROX) C16 NEAR CHANNEL : 1 (APPROX 22 M) FAR CHANNEL : 24 (APPROX 92 M) C17 CMP SPACING : 1.5625 METRES COVERAGE : 6 FOLD C18 FINAL PROCESSING SEQUENCE : MIGRATION 0.5 s, 0.25 ms C19 1: dummy line geom (CDP int 1.5625 m) C20 2: segy to 'disco' internal format C21 3: mute of leaked timing pulse and first arrivals C22 4: band pass filter 160/24 to 1500/72 (Hz/dB per octave) C23 5: whole trace amplitude balance C24 6: surface related multiple elimination C25 7: common midpoint sort C26 8: NMO correction (10% stretch mute), with calculated velocity function C27 9: non surface consistent trim statics using 20 ms gate around water bottom C28 10: AGC (50 ms gate) C29 11: common mid point stack C30 12: minimum entropy deconvolution C31 13: finite difference time migration using 100% stacking velocity function C32 14: band pass filter 160/24 to 1500/72 (Hz/dB per octave) C33 15: tailored water bottom mute (bytes 111-112) C34 16: application static for S & R depth and tide relative to MSL C35 17: trace amplitude scaling and SEG-Y (Revision 1) output C36 C37 Tides from interpolated GPS elevations from CNAV (M Sexton R Parums) C38 CDP coordinates in separate P190 file (M Sexton) C39 GEOPHYSICIST LEONIE JONES; COPYRIGHT COMMONWEALTH OF AUSTRALIA (GEOSCIENCE C40 AUSTRALIA) 2012, CREATIVE COMMONS ATTRIBUTE 3.0 AUSTRALIA LICENCE
Parent Information
Extents
[-13.0, -12.25, 128.75, 129.5]
Reference System
Spatial Resolution
Service Information
Associations
Source Information
Source data not available.