Seabed environments and shallow geology of the Leveque Shelf, Browse Basin, Western Australia - Processed multichannel sub bottom profiler data

Geoscience Australia undertook a marine survey of the Leveque Shelf (survey number SOL5754/GA0340), a sub-basin of the Browse Basin, in May 2013. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir). This dataset comprises sparker sub bottom profiles processed as shallow, high resolution, multichannel seismic reflection data (SEG-Y format), navigation files (P190) and stacking velocities.

Simple

Identification info

Date (Publication)
2014-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/78880

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Geoscience Australia

 Canberra
Author

Jones, L.E.A.

 1
Point of contact
Role Organisation / Individual Name Details
Custodian

ED
Owner

Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

 Voice
Topic category
  • Geoscientific information

Extent

N
S
E
W


Maintenance and update frequency
Not planned

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Keywords

  • Marine Data

  • Sub bottom profiles

Theme

  • geological storage of CO2

Theme

  • marine survey

Theme

  • seismic reflection

Theme

  • seismic sections

Theme

  • marine

Keywords

  • WA

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

 Voice
OnLine resource

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

OnLine resource

Download the data (seg y)

Download the data (seg y)

Resource lineage

Statement

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 GA0340_019.


C1 FINAL SUB-BOTTOM PROFILER DATA PROCESSED BY GEOSCIENCE AUSTRALIA JUNE 2013

C2 DATA ACQUIRED BY GEOSCIENCE AUSTRALIA ON AIMS RESEARCH VESSEL SOLANDER

C3 SURVEY NO. : GA0340 SURVEY NAME : BROWSE BASIN MARINE

C4 LINE NO. : GA0340_019 GPS HEADING : 305 DEGREES

C5 RECORDING PARAMETERS

C6 SYSTEM : SEISMODULE DATE RECORDED : MAY 2013

C7 RECORDING GAIN: CHAN 1-24 0 dB

C8 RECORDING FILTERS : LOW-CUT 0 HZ, HIGH-CUT 0 HZ, NOTCH OUT

C9 SAMPLE RATE : 0.125 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 : 6.5 M PERPENDICULAR SOURCE LAYBACK : 20 M

C13 SOURCE DEPTH : 0.5 M (APPROX) SP INTERVAL : 6.25 M

C14 CABLE MODEL : GEOMETRICS MICROEEL GROUP INTERVAL : 3.125 M

C15 CABLE LAYBACK : 45 M CABLE DEPTH : 2.5 M (APPROX)

C16 NEAR CHANNEL : 1 (APPROX 26 M) FAR CHANNEL : 24 (APPROX 97 M)

C17 CMP SPACING : 1.5625 METRES COVERAGE : 6 FOLD

C18 FINAL PROCESSING SEQUENCE : STACK 0.5 s, 0.25 ms

C19 1: Dummy line geom (CDP int 1.5625 m), corrected for missing SP as needed

C20 2: SEGY to 'disco' internal format

C21 3: Mute of leaked timing pulse and first arrivals

C22 4: Band pass filter 80/30 to 1500/72 (Hz/dB per octave)

C23 5: Whole trace amplitude balance

C24 6: Offset calculation, with lateral offset & yaw correction

C25 7: Dip based offset regularisation to integer values of offset

C26 8: Surface related multiple elimination (SRME)

C27 9: Common midpoint sort

C28 10: NMO correction (20% stretch mute), velocity function hung from WB

C29 11: Trim statics on window keyed to strongest reflectors

C30 12: AGC (25 ms gate)

C31 13: Common mid point stack

C32 14: Tailored water bottom mute (bytes 111-112)

C33 15: FX-decon and run mix

C34 16: Trace amplitude scaling (20 ms gate AGC, 50% whole trace weighting)

C35 17: Resample at 0.25 ms

C36 18: Application static for S & R depth and tide relative to MSL

C37 19: SEG-Y (Revision 1) output

C38 CDP coordinates in P190 file; navigation and tides derived from CNAV

C39 GADA, ENERGY DIVISION; COPYRIGHT COMMONWEALTH OF AUSTRALIA (GEOSCIENCE

C40 AUSTRALIA) 2013, CREATIVE COMMONS ATTRIBUTE 3.0 AUSTRALIA LICENCE

Hierarchy level
Dataset
Description

Unknown

Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/f0b03e3b-8b42-01ed-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Dataset
Name

dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/78880

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f0b03e3b-8b42-01ed-e044-00144fdd4fa6

Date info (Revision)
2018-04-22T08:53:01
Date info (Creation)
2014-01-24T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

geological storage of CO2 marine marine survey seismic reflection seismic sections

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Associated resources

Not available