Seismic Permanent Marks
|
PRIMARY INDUSTRIES AND RESOURCES SOUTH AUSTRALIA |
SARIG Metadata |
Seismic Permanent Survey Mark
Citation
Unique Record ID:
Title: Seismic Permanent Survey Mark
Originator:
Custodian: Petroleum Group - Office of Minerals and Energy Resources, South Australia.
Jurisdiction: South Australia
Description
Abstract:
Data set contains locations of Permanent Survey Marks (PSM’s) located along seismic lines which have been carried out as part of geophysical exploration for petroleum resources. Data set contains some 41000 points mainly from Cooper-Eromanga Basin, Otway and Officer Basin areas. Points are generally marked with a Star dropper and a tag detailing seismic line references plus a half star dropper driven into the ground with top now level to ground surface.
Permanent Survey Marks are generally placed at line ends, intersections with other lines and at approx 5 km interval along survey lines.
ANZLIC Search Words:
Petroleum exploration, Seismic, Geophysics, Seismic line, Seismic survey, Seismic, Geophysics, Seismic line, Seismic survey, Exploration, Surveying
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: 01JAN1970
Ending Date: 31DEC2002
Dataset Status
Progress: 75 % complete.
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:
None.
Data Quality
Lineage:
Source Data History: Historical data was sourced from survey reports and field data submitted by exploration companies as part of their statutory requirements when operating under Petroleum Exploration Licences. Since the gazettal of the new Petroleum Act in Sept2000 these data are required to be submitted in digital form. Attribute data associated with permanent Survey Marks includes Seismic line reference, seismic shot point nos., coordinates and elevation.
Processing Steps: Hard copy data was manually input into PEPS data base and positional accuracy validated against accepted seismic line locations via Mapinfo Mapping package. Similarly digital data files are entered into PEPS once data lists have been reviewed for completeness and integrity.
Positional Accuracy:
The accuracy of the surveyed data is totally dependent on the survey techniques used to acquire the seismic line data and the quality of the horizontal and vertical control to which the survey was connected. Survey accuracy for seismic operations is defined to be better than 10*sqrt(traverse length in kilometres) expressed as centimetres for vertical accuracy and 2.5*sqrt(traverse length in kilometres) expressed as metres for horizontal coordinate accuracy.This is typical 3rd Order survey accuracy.
Data has not been adjusted on account of subsequent surveys. Data is as it was originally presented.
Attribute Accuracy:
Attributes for each permanent marker have been sourced from field acquisition reports and digital files. This data has been accepted as presented and very little validation is possible except for positional accuracy of the points.
Logical Consistency:
The data set contains no duplicate points, is highly consistent and all points have a seismic line and shot point reference.
Completeness:
Data set is approximately 75% complete with only Pedirka Basin area to be populated. This will require back interpolation/transformation in Petroseis of original listing files which are based on Clarke 1858 spheroid onto the current GDA94 mapping system.
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: SA
Country: Australia
Postcode: 5001
Telephone: 08 8463 3204
Facsimile: 08 8463 3229
Electronic Mail Address: pirsa.petroleum@saugov.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: Point
Dimension: x, y
Sample Graphic:
Usage
Purpose:
To provide survey control for subsequent activities such as seismic surveys in areas where very little other control is available.
Use:
Data to be made available to all parties requiring survey control data.
Use Limitation:
To be used on the understanding that accuracies of coordination are determined by the survey techniques used to establish the point and the fact that seismic surveying is at best of 3rd Order status.
Dataset Associations
Dependant Dataset Title:
Seismic Line
Attribute Information:
Attribute Table Type: Vector - Point
| Attribute Name | Attribute Type | Attribute Description | Attribute Completeness % | Attribute Reliability % |
| LINE | Character | Seismic line name | 100 | 100 |
| STATION | Number | The station number is an identifier along a seismic line which represents the location where seismic energy is released during a seismic survey. This is also used as a reference for the closest location to the permanent mark. | 99 | 100 |
| ELEVATION | Number | Surface elevation of the permanent mark (metres above mean sea level) | 87 | 100 |
| EASTING | Number | Location of permanent mark expressed as GDA94 easting (metres) | 100 | 100 |
| NORTHING | Number | Location of permanent mark expressed as GDA94 northing (metres) | 100 | 100 |
| ZONE | Number | GDA94 MGA Zone | 100 | 100 |
| LATITUDE | Number | Location of permanent mark expressed as GDA94 latitude | 100 | 100 |
| LONGITUDE | Number | Location of permanent mark expressed as GDA94 longitude | 100 | 100 |
| REMARKS | Character | Notes which provide additional information about the permanent mark. | 100 | 100 |
Origin
Dataset Size: 16Mb( ArcView shapefile).
Projection: Geographicals
Datum: Geocentric Datum of Australia (GDA94)
Metadata Management
Date Modified: 26AUG2002
Modified Officer: Peter Hough, Senior Geophysicist
Date Authorised:
Authorisation Officer:
- Page URL: http://www.pir.sa.gov.au/minerals/sarig/metadata/seismic_lines/seismic_permanent_marks
- Page Last Modified: November 8, 2011