This layer contains line features which represent depth contours (bathymetry) in Mallacoota Inlet.
Search Words:
Oceans
Publication Date:
23 January 2018
Dataset Status:
This layer is complete for Mallacoota Inlet
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
http://www.data.vic.gov.au/
The depth information contained within this layer should not be used for navigational purposes.
Data Existence:
Metadata Name
Descriptions
Resource Name:
BATHYMETRY_MALLACOOTA_ARC
Title:
Mallacoota Inlet Depth Contours at 1:10,000
Anzlic ID:
ANZVI0803004021
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
This layer contains line features which represent depth contours (bathymetry) in Mallacoota Inlet.
Search Words:
Oceans
Purpose:
BATHYMETRY_MALLACOOTA_ARC is a 1:10,000 layer used for depth analysis.
Marine ecological research requires the type of detailed information contained within the BATHYMETRY_MALLACOOTA_ARC layer. Depth models have wide ranging uses in fisheries management, development of aquaculture and ecological research.
The depth information within this layer should not be used for navigational purposes.
Geographic Extent Polygon:
Geographic Bounding Box:
Beginning to Ending Date:
1981-08-01 - 2000-03-30
Maintainence and Update Frequency:
As needed
Stored Data Format:
Available Format(s) Types:
DIGITAL All major formats available on request
Positional Accuracy:
The 1:10,000 contours were derived manually from a visual interpretation of the depth points by a draughtsman.
The depth information within this layer should not be used for navigation purposes.
Attribute Accuracy:
All attributes have been checked by DPI Queenscliff, and are complete.
Logical Consistency:
Not known.
Data Source:
Dataset Source: Data was digitised from Victorian Channels Authority (formerly the Port of Melbourne Authority) charts. Depth contours that had been manually interpreted and drafted on the charts by Port of Melbourne Authority were digitised as arcs. The depth charts used to create the layer are listed below.
Depth Contours
VCA Chart 3675. Lower Lake - Entrance to Kingfisher Point. Scale 1:10,000. Surveyed Aug 1981,1982-Feb 1990.
VCA Chart 3676. Entrance to Upper Lake - Snapper Point to Quambie Point. Scale 1:10,000. Surveyed Feb 1991.
VCA Chart 3677. Upper Lake - Gravelly Point to Gipsy Point. Scale 1:10,000. Surveyed Feb 1991.
VCA Chart 3678. Lower Lake - Allan Head to Harrison Creek. Scale 1:10,000. Surveyed Feb 1990.
Datum for contours on all of above charts is 1.380 metres below the P.M. on the masonary sea wall at the Eastern end of Mallacoota wharf.
Dataset Originality: Primary & Derived
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2014-11-13
Additional Metadata:
History: This layer replaced MALL_BATHYM in March 2010
Relationship to other Datasets: The BATHYMETRY_MALLACOOTA_ARC layer draws on information stored within the SHORE25 and HYDRO25 layer. 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 through hydrographic surveys. 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