Abstract
This paper describes three datasets of seamless bathymetry and coastal topography for Sydney Harbour (Port Jackson), Botany and Bate Bays, and the Hawkesbury River. The datasets used to form these compilations were the most recent and highest quality available to the authors and were originally collated using the software ESRI ArcGIS. The original compilation of this data was undertaken to support tsunami modelling research by the authors of this paper. Before processing, all data were adjusted and/or reprojected to conform to the vertical datum Australian Height Datum (AHD) and horizontal projection WGS84 UTM zone 56. Data resolution and density was highly variable and grid resolutions of the final datasets were selected as the highest resolutions possible using the most sparse data in the compilation in question. For areas where no data were available, the ESRI ArcGIS interpolation tool, Topo to Raster, was used to provide a best estimate. These dastasets of three important Australian waterways provide a useful tool for coastal research and scientific interest.
Highlights
Background & SummarySeamless elevation datasets comprising nearshore bathymetry and coastal elevation are extremely useful for coastal process research, including morphological studies[1] and coastal modelling[2]
The standard method of handling Digital Elevation Models (DEMs) by Geographic Information Systems (GIS) and modelling software suites is to use a single resolution for the whole DEM as opposed to a variable resolution
We present three study sites selected for the compilation of seamless, gridded elevation datasets originally compiled to support a larger tsunami modelling project[2]
Summary
Seamless elevation datasets comprising nearshore bathymetry and coastal elevation are extremely useful for coastal process research, including morphological studies[1] and coastal modelling[2]. The standard method of handling Digital Elevation Models (DEMs) by Geographic Information Systems (GIS) and modelling software suites is to use a single resolution for the whole DEM as opposed to a variable resolution This means that the most appropriate resolution selected for a single DEM is that of the more sparse datasets being compiled. The DEMs created in this study are for use in research and are not held to the standards and specifications of nautical charts published by hydrographic authorities. The study sites selected were Sydney Harbour, Botany and Bate Bay, and the Hawkesbury River (Fig. 1) These major Australian waterways were selected based on their proximity to low lying development and bathymetric data availability.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
