The NSW government has acquired extensive aerial imagery of the coastline. Using stereo-photogrammetric techniques, around 10,000 survey transects have been extracted to-date along NSW’s 990 km sandy beach coastline, dating back to the 1930s at some locations. Recent advances in survey technology, such as airborne LiDAR, UAV surveys and ground laser surveys are reducing the cost and the difficulties of obtaining large-scale beach surveys. As these technologies evolve, surveys are becoming more frequent, highlighting the need to move to a structured, accessible database.
Along the NSW coast, the photogrammetry profiles provide the raw data from which long-term trends of beach change can be assessed. However, this data has only been available when individually requested from Office of Environment and Heritage (OEH). To make this data more accessible and to promote its wider use, the statewide dataset of beach profiles is available via the new ‘NSW Beach Profile Database’ online interface and toolbox. This online database incorporates a user-friendly interface to access profile data as well as a range of visualisation and analysis tools. These include the visualisation of changes in beach cross-sections and some commonly used coastal analysis tools, such as timeseries analysis of the crossshore location at any beach elevation contour and sand volume changes at any profile along the NSW coastline. It is anticipated that bringing this information into a user-friendly, internet-based format will better facilitate easy access and analysis of beach trends that can inform coastal management and planning decision-making along the NSW coastline. This paper provides examples of data visualisation and analysis tools that are available, along with an overview of the underlying data structure of the new beach profile survey database.
Alice Harrison, Water Research Laboratory, UNSW Sydney
Alice started at WRL in 2016 after completing a Bachelor of Engineering and Bachelor of Commerce from UNSW in 2015. She is routinely involved in large coastal analysis and engineering projects at WRL, and her experience includes numerical modelling of coastal and estuarine systems, coastal hazard assessments and design of coastal structures.
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