This layer contains line features which represent isobaths (lines of equal depth) for Bass Strait.
Search Words:
Oceans
Publication Date:
23 January 2018
Dataset Status:
Bass Strait
This layer is complete for Bass Strait.
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
http://www.data.vic.gov.au/
The bathymetric information contained within this layer is not to be used for navigation purposes
Data Existence:
Metadata Name
Descriptions
Resource Name:
BATHYMETRY_BASS_STRAIT_ARC
Title:
Bass Strait Depth Zone Contour Lines at 1:250,000
Anzlic ID:
ANZVI0803004018
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
This layer contains line features which represent isobaths (lines of equal depth) for Bass Strait.
Search Words:
Oceans
Purpose:
BATHYMETRY_BASS_STRAIT_ARC is a 1:250,000 line layer which represents subtidal relief (bathymetry). This layer will serve as a Digital Terrain Model (DTM) until more depth data can be obtained from which DTMs can be generated using automated techniques. Common uses for depth zone information include comparative analysis with fisheries catch data and representing the movement of commercial species in three dimensions.
The depth information contained within this layer should not be used for navigation purposes.
Vertical datum is mean sea level. The 10 m contour was interpolated by DPI Queenscliff (formerly MAFRI) using the coastline and 20 m contour.
Geographic Extent Polygon:
Geographic Bounding Box:
Beginning to Ending Date:
1995-02-01 - 1995-03-31
Maintainence and Update Frequency:
As needed
Stored Data Format:
Available Format(s) Types:
DIGITAL - All major formats available
Positional Accuracy:
Precision of source data (1:250,000 Natioinal Bathymetric Map Series): Horizontal accuracy 100m to 1km of well defined points. Vertical accuracy 10cm to 1m in elevation. Depths are relative to Mean Sea Level.
Digital precision: Any departure between the digital and source material (measured between centre lines) will not exceed 1mm at map scale (i.e. 250m at 1:250,000)
Determination: Positional accuracy is only an estimate and has not been subject to any test.
The depth information within this layer should not be used for navigation purposes.
Attribute Accuracy:
There has been no assessment of attribute accuracy.
Logical Consistency:
This layer exists as a single entity for Bass Strait.
Data Source:
Dataset Source: Division of National Mapping - 1:250,000 National Bathymetric Map Series (1977-1986)
Dataset Originality: Primary
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2014-11-13
Additional Metadata:
History: This layer replaced DEPTH250_ARC in March 2010
Relationship to other Datasets: A subset of these isobaths were used to bound depth zones in the BATHYMETRY_BASS_STRAIT_POLY layer. The landward boundary is the 1:250,000 coastal trace. The coastal trace is subject to change especially in areas subject to erosion or mass movement of coastal sediments.
This layer does not include depths for bays and inlets with the exception of coarse scale contours for Port Phillip. Depth information is available in separate 1:25,000 layers for the main bays and inlets in Victoria.
Current Design Issues: All bathymetric information is collected as point features or spot depths. Isobaths are interpreted either by visual manual methods or by automated techniques. As more data becomes available the positional accuracy of isobaths should be revised. Each acquisition of depth information needs to be documented and assessed before it is incorporated in the layer.
Future Design Issues: This layer is a baseline data set and future design considerations will be limited.
Related Documents: None