JSON RDF ISO19115-3 XML

Percentage of time the Shields parameter exceeds 0.25

Created 24/06/2017

Updated 24/06/2017

JSON RDF ISO19115-3 XML

This data represents the percentage of time the Shields parameter (Shields, 1936) exceeds 0.25. The Shields parameter (non-dimensional bed shear stress) value of 0.25 is assumed to be the threshold for creating disturbed patches on the seabed. This value is several times larger than that required to initiate traction bedload transport (~0.05) and falls in the middle of the ripple and dune bedform stability field. It represents conditions when the seabed is highly mobile and where patches of disturbed habitat are likely to be created.

Shields, A. 1936. Application of similarity principles and turbulence research to bed-load movement. Mitteilunger der Preussischen Versuchsanstalt f¨ur Wasserbau und Schiffbau 26: 5-24

You can also purchase hard copies of Geoscience Australia data and other products at http://www.ga.gov.au/products-services/how-to-order-products/sales-centre.html

Files and APIs

Tags

Additional Info

Field Value
Title Percentage of time the Shields parameter exceeds 0.25
Language English
Licence Creative Commons Attribution 4.0 International
Landing Page https://devweb.dga.links.com.au/data/dataset/317bd0ba-c6e8-466c-8916-203041f322c2
Contact Point
Geoscience Australia
sales@ga.gov.au
Geospatial Coverage {"type": "Polygon", "coordinates": [[[110.0, -44.0], [156.0, -44.0], [156.0, -7.0], [110.0, -7.0], [110.0, -44.0]]]}
Data Portal data.gov.au