0f36564d-3560-43d7-aa21-f659c76cb5c7 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T12:02:36 creation ISO 19115 2016 The integrated Shields parameter exceeding 0.25 divided by the integrated total Shields parameter 0f36564d-3560-43d7-aa21-f659c76cb5c7 This data represents the integrated Shields (Shields, 1936) parameter exceeding 0.25 divided by the integrated total Shields parameter. The Shields parameter (non-dimensional bed shear stress) value of 0.25 is assumed to be the threshold for creating disturbed patches. 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 {"type": "Polygon", "coordinates": [[[110.0, -44.0], [156.0, -44.0], [156.0, -7.0], [110.0, -7.0], [110.0, -44.0]]]} 110.0 156.0 -44.0 -7.0 Marine Data Marine Geoscience NERP NERP Marine Biodiversity Hub Published_External marine oceanography seabed File download documentDigital Download the data (ArcGIS-grid) ZIP Unnamed resource documentDigital HTML