2000 to 2009 seismic lines
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SARIG Metadata
Citation
Description
Data currency
Dataset status
Access
Data quality
Contact information
Metadata information
Supplementary information
Responsible party
Description
Usage
Dataset associations
Origin
Metadata management
Citation
Unique record ID:
Title: Seismic Line
Originator:
Custodian: Petroleum Group - Office of Minerals and Energy Resources, South Australia.
Jurisdiction: South Australia
Description
Abstract:
Location of ground traverses along which seismic surveys have been carried out as part of geophysical exploration for petroleum resources and research studies.
The dataset contains in excess of 17700 seismic lines in 617 surveys representing over 340,000 line kilometres of data.
ANZLIC search words:
seismic, geophysics, seismic line, seismic survey, survey, petroleum, hydrocarbon, oil, gas, exploration, geophysics, shotpoints
Spatial domain:
Geographic extent name: South Australia
Geographic extent polygon: 129 -38.5, 129 -26, 141 -26, 141 -38.5, 129 -38.5
Bounding coordinates:
North Bounding Coordinate: -26
South Bounding Coordinate: -38.5
East Bounding Coordinate: 141
West Bounding Coordinate: 129
Data currency
Beginning date: 01JAN1955
Ending date: Current
Dataset status
Progress: In progress
Maintenance and update frequency: As required
Access
Stored data format:
Digital ArcInfo, vector data, geographicals GDA94
Available format type:
Digital ARC/INFO
Digital ArcView Shapefiles
Digital ASCII (eg. UKOOA format)
Non-Digital Plotted maps
Access constraints:
Restricted to viewing only. Coordinate data available upon request.
Data quality
Lineage:
Source Data History: PIRSA receives seismic line location data from exploration companies as part of their statutory reporting requirements, from Government and Academic institutions and information collected by Office of Minerals and Energy Resources and its predecessors. Data is received digitally in ASCII code and UKOOA format. The data files contain surveyed and/or interpolated seismic shotpoints which define the position of the seismic line. Shotpoint locations from some of the earliest surveys recorded during the 1950s, 1960s and 1970s were not available digitally and were digitised from best available maps. Prior to 1966, the spheroid in general use was Clarke 1858. Many of the surveys from this period were digitised from existing maps and were not converted to the datum currently in use, GDA94, and may therefore be in error by up to 200 metres.
Processing Steps: Data received in digital form were checked and corrected as necessary before being committed to the database. The original shotpoint data were processed to filter out and reduce the number of points so that only those points required to define near-straight line segments are retained in the database.
Positional accuracy:
The accuracy of the surveyed data is dependant on the survey techniques used to acquire the data and the quality of the horizontal and vertical control to which the seismic shotpoints were connected. The relative accuracy between points, rather than absolute accuracy, is the main criteria in seismic surveying methodology. The absolute accuracy is defined to be within the minimum specifications of (2.5*sqrt(kilometres length of line)) metres for horizontal accuracy and (10*sqrt(kilometres length of line)) centimetres for vertical accuracy. Generally, this accuracy is a factor of 5 times better than the minimum survey specifications. The relative accuracy between points is generally better than a couple of centimetres. The data is stored in the database to 1m precision. The original data is archived in its native format including the original precision which may be quoted to two decimal places.
Attribute accuracy:
The seismic line and survey attributes are derived from operational survey reports. Validation checks are performed periodically, resulting in an estimated 95% accuracy. These checks include comparisons between reports from the spatial dataset and other supporting data.
Logical consistency:
Highly consistent internally with the exception of a small number (< 5%) of lines which are duplicated and/or have been incorrectly labelled. The majority of these are pre-1970’s lines which were digitised.
Completeness:
95% complete. Receipt of data is generally 3-6 months after a survey is completed.
Contact information
Contact organisation: Petroleum Group - Office of Minerals and Energy Resources, South Australia.
Contact position: Senior Geophysicist
Postal address: GPO Box 1671
City: Adelaide
State: South Australia
Country: Australia
Postcode: 5001
Telephone: +61 8 8463 3204
Facsimile: +61 8 8463 3229
Electronic mail address: pirsa.petroleum@sa.gov.au
Metadata information
Metadata date: 01AUG2002
Metadata reference:
Supplementary information
Refer to additional user information on our web site.
Responsible party
Responsible: Custodian / Steward
Description
Dataset classification: Derived
Spatial representation type: Vector
Feature type: Arc
Dimension: x, y
Sample graphic:
Usage
Purpose:
To display the location of and basic data for seismic lines
Use:
Geophysical and prospectivity assessment
Use limitation:
None
Dataset associations
Dependant dataset title:
None.
Attribute information:
Attribute table type: Vector - Line
| Attribute name | SARIG attribute name | Description |
|---|---|---|
| LINE | Line | Seismic line name |
| SURVEY | Survey | Survey code |
| OPERATOR | Operator | Company that manages survey operations within the licenced area |
| CONTRACTOR | Contractor | Company that carries out the seismic recording |
| ENVELOPE | Company report | Company report reference (PIRSA Envelope number); linked to company report in reference database |
| LINE_LENGTH_KM | Line length (km) | Length of seismic line (km) |
| NAME | Survey name | Survey name |
| SPVPPTS | Shotpoint range | Range of shotpoints along the line |
| GEOMETRY | Geometry | Seismic line configuration used for the survey (one of source, receiver or observation) |
| FOLD | Fold | The multiplicity of common-midpoint data |
| RECORDING_METHOD | Recording format | Recording technique (one of reflection or refraction) |
| YEAR_RECORDED | Year recorded | Year that survey was carried out |
| DIMENSION | Dimension | Refers to how survey data is collected; either along a line or over an area (one of 2D, 2.5D or 3D) |
| TENEMENT | Tenement | Licensed areas where the survey was carried out |
| PROVINCE | Province | Sedimentary basin or petroleum province within which the survey is carried out |
| SITUATION | Situation | Indicates whether the survey is an onshore or offshore survey |
| DATEBEG | Survey start | The date on which the seismic survey was commenced |
| DATEEND | Survey end | The date on which the seismic survey was completed |
| ENERGY_SOURCE | Energy source | Device which releases energy for seismic recording |
| RECMODE | Recording mode | Nature of the seismic recording (one of D (Digital) or A (Analogue)) |
| INSTRUMENT | Instrument | Seismic recording instrument |
| CHANNELS | Channels | The number of geophone groups that are recorded simultaneously |
| GROUP_INTERVAL | Group interval | The number of geophones in a group that collectively feed a single channel |
| SPVP_INTERVAL | Shotpoint interval | The distance (m) between geophone groups |
| LINEKMS | Survey line (kms) | Length (km) of all seismic lines which have been recorded for the survey |
| REPORTBOOK | Reportbook | Additional comments that clarify survey details |
| SECURITY | Security | The status of the seismic survey (one of Open File or Confidential) |
| REFERENCES | References | PIRSA documents that provide associated survey information |
| COMMENTS | Comments | Additional comments that clarify survey details |
Origin
Dataset size: 45Mb (ArcView shapefile).
Projection: Geographicals
Datum: Geocentric Datum of Australia (GDA94)
Metadata management
Date modified: 26AUG2002
Modified officer: Dragan Ivic, Senior Geophysicist
Date authorised:
Authorisation officer:
- Page URL: http://www.pir.sa.gov.au/minerals/sarig/metadata/seismic_lines/2000_to_2009_seismic_lines
- Page Last Modified: November 8, 2011