9c635e53-2e62-4b13-a4e9-e390e82e3ddc urn:uuid en UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-25T22:12:22 creation ISO 19115 2016 VCMP Sites - Shoreline Trends 9c635e53-2e62-4b13-a4e9-e390e82e3ddc VCMP Sites - Shoreline Trends The Shoreline Trends dataset features short-term and long-term shoreline trends across sites monitored by the Victorian Coastal Monitoring Program (VCMP) along Victoria's coastline, spatially represented as point data. The VCMP drone survey short-term outputs include shorelines for each survey, taking the ‘shoreline’ as the +1 m AHD contour for Open Coast sites, and +0.5 m AHD contour for large bay sites. Drone survey data collection is performed as described in Pucino et al., 2021 and Ierodiaconou et al., 2022, and outlined as: - Data processing and quality control conducted within the Propeller platform (https://vcmp.prpellr.com), with additional manual quality control checks, to achieve a horizontal-vertical uncertainty of 0.1 m or better (Pucino et al., 2021), with output products of Digital Surface Models (DSM) and ortho-mosaics. - Analysis is conducted using a statewide framework of 30-m spaced transects Shoreline change trends are determined for each transect, defining a ‘short-term trend’ as being based on the last 2-years of data. Long-term shoreline trends are obtained for the period 1988 to 2021 (34 years) using the satellite extracted, annually averaged shorelines from Digital Earth Australia (DEA) coastlines (Bishop-Taylor et al., 2021). All shoreline data (short-term VCMP drone and long-term DEA satellite) are interpolated to the same set of 30-m spaced transects, based on the Digital Earth Australia 2019 product. Aerial images are hosted and geo-rectified by DEECA's Coordinated Imagery Program. Based on control point checks by VCMP, newer images (approx. post-2000) are estimated to have horizontal uncertainty of 3-m or less. Older images (pre-2000) can have greater uncertainty, estimated at up to 10-m. Older images (<1960) may have larger errors (unconstrained) and should be treated with caution. For all shoreline data sources (UAV, DEA, aerial), trends are calculated as a simple linear regression across the full dataset, at each transect, for each data source. Standard deviations and 95% confidence intervals are also included for each data point. Vertical uncertainty for the output digital surface model (DSM) is estimated at 0.1 m More information about the Shoreline trend dataset and other datasets generated from the Victorian Coastal Monitoring Program can be found at https://www.marineandcoasts.vic.gov.au/__data/assets/pdf_file/0041/688397/VCMP_Sites_MetadataReport_Oct2023.pdf environment VCMPSITESSHORELINETRENDS DWG documentDigital DWG VCMPSITESSHORELINETRENDS DXF documentDigital DXF VCMPSITESSHORELINETRENDS GDB documentDigital GDB VCMPSITESSHORELINETRENDS SHP documentDigital SHP VCMPSITESSHORELINETRENDS MIF documentDigital MIF VCMPSITESSHORELINETRENDS TAB documentDigital TAB VCMPSITESSHORELINETRENDS Extended TAB documentDigital Extended TAB