Reference Document - Coastal Hazard Assessment - MCU24 0094 · MCU24/0094

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List of Figures
Figure 2-1 Site Location .................................................................................................................................................................... 2
Figure 2-2 Toe of frontal dune location (21 March 2024).................................................................................................................. 3
Figure 3-1 1972 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 4
Figure 3-2 1974 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 5
Figure 3-3 1981 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 5
Figure 3-4 1988 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 6
Figure 3-5 1994 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 6
Figure 3-6 1999 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 7
Figure 3-7 2004 Aerial Photograph (qimagery.information.qld.gov.au) ............................................................................................ 7
Figure 3-8 November 2018 Aerial Photograph ................................................................................................................................. 8
Figure 3-9 DEA recession analysis near the site. ............................................................................................................................. 9
Figure 3-10 DEA Annual Coastlines near the site .......................................................................................................................... 10
Figure 3-11 CoastSat shoreline position timeseries approximately 10m south of the site.............................................................. 10
Figure 4-1 Coastal Management District (source: SARA DA Mapping System)............................................................................. 11
Figure 4-2 Erosion Prone Area (source: SARA DA Mapping System) ........................................................................................... 12
Figure 5-1 Wave Rose for Sunshine Beach (BMT, 2013)............................................................................................................... 16
Figure 5-2 Offshore Significant Wave Height Design Curves (BMT, 2013) .................................................................................... 16
Figure 6-1 Sketch of pre-storm and predicted post-storm profiles based on Vellinga (1983) ......................................................... 20
Figure 6-2 storm profile (Vellinga, 1983) at ETA596 for a 1.79m AHD storm tide level.................................................................. 22
Figure 6-3 storm profile (Vellinga, 1983) at 33 Ross Crescent for a 1.79m AHD storm tide level .................................................. 23
Figure 6-4 storm profile (Vellinga, 1983) at ETA602 for a 1.79m AHD storm tide level.................................................................. 23
Figure 6-5 Conceptualisation of recession due to sea level rise due to Bruun Rule (Bruun, 1962)................................................ 24
Figure 6-6 Dune slumping for 33 Ross Crescent, Sunshine Beach................................................................................................ 26
Figure 6-7 2100 Extent of the reassessed erosion prone area ....................................................................................................... 27
Figure 6-8 Erosion cut profile for 33 Ross Crescent, Sunshine Beach ........................................................................................... 28
Figure 6-9 Beach profile and storm profile ETA 602 (BMT, 2018) .................................................................................................. 30
Figure 6-10 Dune heights and beach profile ................................................................................................................................... 31
Figure 6-11 North Sea storm surge hydrograph (Vellinga, 1983) ................................................................................................... 32
Figure 6-12 BMT (2018) conceptual illustration of the erosion prone area components ................................................................ 33
Figure 6-13 ETA596 Velinga calculation (BMT, 2018).................................................................................................................... 34
Figure 6-14 ETA602 Velinga calculation (BMT, 2018).................................................................................................................... 34
Figure 6-15 Global mean sea level rise from 2006 to 2100 (IPCC, 2014) ...................................................................................... 35




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