Brief description
This dataset is a geomorphic classification of the shelf features surrounding Lord Howe Island and Balls Pyramid. This dataset provides information on the size, extent and type of features which occur around the shelves, which can be used for a broad range of marine planning and research purposes. Shelves were classified into shelf region (inner, mid, outer) and geomorphic features. Features include an extensive submerged fossil reefs, ridges and patch reefs, sandy basins, paleochannels, modern fringing reef, shallow lagoon, shelf edge terraces and shelf break. Broad seafloor features were visually interpreted through digitisation in ArcGIS v10.1 using terminology consistent with international nomenclature and national standards. The classification of geomorphic features extends upon the interpretation of Balls Pyramid shelf undertaken by Linklater et al. (2015). Full description of methods is outlined in the following open-access publication, accessible by the following link: https://doi.org/10.3390/geosciences8010011 Version 1 of the data available from https://doi.org/10.17632/8vrtxts669.1Lineage
Maintenance and Update Frequency: notPlanned
Statement: Broad seafloor features were visually interpreted through digitisation in ArcGIS v10.1 using terminology consistent with international nomenclature and national standards. Shelves were classified into shelf region (inner, mid, outer) and geomorphic features. The inner shelf represents the zone within approximately 1 km of the shoreline to around 30–35 m depth. Inner shelf features around Lord Howe Island were defined at a 1:6000 map scale using WV2 imagery, supplemented with ADS40 (2012) (Land and Property Information, New South Wales, Australia) aerial imagery where cloud artefacts obscured the view. The middle and outer shelf zones have varying distances from the shoreline, and typically represent the seaward 50 and 130 m isobaths, respectively. For the remaining shelf, features were digitised at 1:10,000 using slope transparently (50%) displayed over the bathymetry model. The large, mid-shelf fossil reef features were sub-divided into the upper (below 35 m depth), lower (beyond 35 m depth), and intra-reef depression (localised lows within reef structure) features.
Notes
CreditFunding for this research was received by the Australian Government’s National Environmental Science Program Marine Biodiversity Hub. Funding was also provided by NSW Department of Primary Industries, Lord Howe Island Marine Park Authority and University of Wollongong (UOW) Research Partnerships Grant.
Issued: 23 11 2024
Data time period: 2018-01-02 to 2018-01-02
text: westlimit=158.935735; southlimit=-31.888551; eastlimit=159.365892; northlimit=-31.385085
Subjects
COASTAL LANDFORMS |
CORAL REEFS |
EARTH SCIENCE |
GEOMORPHIC LANDFORMS/PROCESSES |
LAND SURFACE |
Marine Planning Regions (Australia) | Marine Planning Regions (Australia) | Lord Howe |
SOLID EARTH |
geoscientificInformation |
oceans |
User Contributed Tags
Login to tag this record with meaningful keywords to make it easier to discover
Other Information
(ASSOCIATED PUBLICATION - Development of a Seamless, High-Resolution Bathymetric Model to Compare Reef Morphology around the Subtropical Island Shelves of Lord Howe Island and Balls Pyramid, Southwest Pacific Ocean)
doi :
https://doi.org/10.3390/geosciences8010011
V1 of dataset (doi: 10.17632/8vrtxts669.1)
Identifiers
- global : de9020c2-e679-4301-add2-45fd99f9d177
