Bass Basin GIS project : an output of the Western Tasmanian Regional Minerals Program - synthetic aperture radar (SAR) data

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

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Dataset citation

ANZLIC unique identifier: ANZCW0703004861

Title: Bass Basin GIS project : an output of the Western Tasmanian Regional Minerals Program - synthetic aperture radar (SAR) data

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Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia

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This is the interpretation of satellite imagery or SAR data, showing the location of natural and non-natural 'slicks/seeps' along the surface of the ocean. These shapefiles show the position of the slicks along the the top of the sea. There are polygons and general point locations of the slicks. SAR data is used to aid in identifying prime petroleum targets from natural seeps.

ANZLIC search words:

MARINE Exploration
PHOTOGRAPHY AND IMAGERY Satellite
POLLUTION Water Monitoring
WATER Hydrochemistry Classification

Spatial domain:

locality map

Geographic extent name: BASS STRAIT - BASS STRAIT - Ocean and Sea Regions - Australia

Geographic extent polygon: 143 -37, 149 -37, 149 -43, 143 -43, 143 -37,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:: North bounding latitude: -37 °; South bounding latitude: -43 °; East bounding longitude: 149 °; West bounding longitude: 143 °

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Data currency

Beginning date: 2002-02-10

Ending date: 2002-06-10

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Dataset status

Progress: Complete

Maintenance and update frequency: Not Known

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Access

Stored data format:: DIGITAL - shp ArcView shape file ArcView Geographic WGS84

Available format type:: DIGITAL - shp ArcView shape file ArcView Geographic WGS84

Access constraints:

General Geoscience Australia licence agreement and fee required

Free Data Download

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Data quality

Lineage:

All SAR data was origionally done by a contractor (Infoterra) using the SAR scenes original obtained by Geoscience Australia and are the subject of this metadata. Geoscience Australia received the raw data/interpretation in Excel format. This was then loaded into ArcView. No extra work was needed.

The interpretation of both polygon and points have overlapping areas. This is due to the fact that the interpretation was done to multiple scenes over the same areas. This is to show the changes over time, if any.

Positional accuracy:

Vector Data - No analysis of the positional accuracy of any of the vector features has been undertaken, however due to the accuracy of the interpretation it can be considered that all vector features are within 30 metres of their true position.

Attribute accuracy:

Regarding the vector data the attributes are for naming purposes only. For the actual interpretation an attribute of "slick" has been placed. This is the actual 'group' of what category each slick falls under. The naming of each slick/seep was up to the interpreter and is therefore not prone to any error.

Logical Consistency:

All vector data has been visually checked for extraneous points and value added data. Polygons have been checked for closure and dangles.

Completeness:

All vector data and details are complete and verified.

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