This layer contains line features for depth contours (bathymetry) in Western Port.
Search Words:
Oceans
Publication Date:
23 January 2018
Dataset Status:
Layer is complete for Western Port. Note however, that contours do not exist for the area west and south west of Middle Bank which has been inadequately surveyed.
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
http://www.data.vic.gov.au/
NOTE: The depth information contained within this layer should not be used for navigational purposes.
Data Existence:
Metadata Name
Descriptions
Resource Name:
BATHYMETRY_WESTERN_PORT_ARC
Title:
Western Port Depth Contours at 1:25,000
Anzlic ID:
ANZVI0803004033
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
This layer contains line features for depth contours (bathymetry) in Western Port.
Search Words:
Oceans
Purpose:
BATHYMETRY_WESTERN_PORT_ARC is a 1:25,000 layer used for depth analysis.
Ecological research requires the type of detailed information within the BATHYMETRY_WESTERN_PORT_ARC layer relating to the nature of the sea bed. Depth models have wide ranging uses in the fisheries management, development of aquaculture and ecological research.
The depth information within this layer should not be used for navigation purposes.
Geographic Extent Polygon:
Geographic Bounding Box:
Beginning to Ending Date:
1974-09-01 - 2000-02-20
Maintainence and Update Frequency:
Not planned
Stored Data Format:
Available Format(s) Types:
DIGITAL All major formats available on request
Positional Accuracy:
Horizontal and Vertical accuracy have not been determined.
The depth information within this layer should not be used for navigation purposes.
Attribute Accuracy:
All attributes have been checked by DPI
Logical Consistency:
Attributes have been checked by DPI
Data Source:
Dataset Source: Data was digitised from Victorian Channels Authority charts (formerly Ports and Harbours). The depth contour charts digitised to create the layer are listed below. The scale for all of these charts is 1:25,000
WP425-3023. Eastern Entrance to Corinella. Surveyed Nov 1977-Oct 1984
WP426-3024. French Island East - East Arm to Tooradin. Surveyed Nov 1977-March 1983
WP427-3025. North Arm - Hanns Inlet to Blind Bight. Surveyed Sept 1974-April 1985
WP428-3026. Western Entrance to Sandy Point. Surveyed Sept 1974-Aug 1984
For all of these charts, the composites are derived from the 1:10,000 series, Ports and Harbours, the shore detail is derived from the 1:25,000 series, Lands Department, and contours are in metres and are to chart datum, which is 1.6m below the Australian Height Datum (AHD)
Dataset Originality: Primary & Derived
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2014-11-13
Additional Metadata:
History: The surveys from which the original depth contour charts were produced began in September 1974 and ended in April 1985. The digital capture of these charts for GIS commenced in December 1999 and was completed in February 2000. This layer replaced WP_BATH_25 in March 2010
Relationship to other Datasets: The BATHYMETRY_WESTERN_PORT_ARC layer draws on information stored within the SHORE25 and HYDRO25 layers. The coastline is subject to change especially in areas subject to erosion or mass movement of coastal sediments.
Current Design Issues: Bathymetric information is initially 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 base line data set and future design considerations will be limited.
Related Documents: None