![Page 1: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/1.jpg)
COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION,
ROCHES BEACH, LAUDERDALECLARENCE CITY, TASMANIA
James CarleyWater Research Laboratory
University of New South Wales
![Page 2: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/2.jpg)
WRL -THE ORGANISATION• Part of UNSW• Established at Manly Vale 1959• Birthplace of coastal engineering in Australia
ACTIVITIES• Teaching• Research• Commercial consulting by full time project staff
PROJECT METHODS• Physical Modelling• Numerical Modelling• Fieldwork• Desktop Design
![Page 3: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/3.jpg)
Coastal hazards are not new
Lauderdale CanalEntrance1924 to 2008
![Page 4: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/4.jpg)
Roches Beach Studies
![Page 5: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/5.jpg)
Roches Beach Studies
WRL studies• 1988: Pitt+Sherry and Prof Doug Foster• 2008: Clarence coastal study incl adaptation• 2009: Beach scraping for Cremorne & Roches• 2011: Hazard line reassessment• 2011: Trial groyne investigation• 2011: Storm damage assessment
![Page 6: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/6.jpg)
Roches Beach Studies
Other studies• 1959: Prof J L Davies• 2006: Chris Sharples (Tasmania wide)• 2006: Gerry Byrne• 2006: Bill Cromer• 2007: Chris Sharples (Roches Beach)• 2007: John Hunter (Hobart extreme sea levels)• Ongoing: Chris Sharples UTAS
![Page 7: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/7.jpg)
WRL 2008 studyCoastal hazard lines and options for entire Clarence LGA developed coast
Technical reference group:Mark Hemer (CSIRO)John Hunter (UTAS)Chris Sharples (UTAS)
![Page 8: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/8.jpg)
Key Coastal Hazardsand Processes
Key hazards (out of ~10)• Erosion• Inundation
• Groundwater
Key coastal processes (out of ~10)• Waves• Water levels
![Page 9: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/9.jpg)
9
Wave buoys
CAPESORELLWAVE BUOY
EDENWAVEBUOY
![Page 10: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/10.jpg)
OCEAN WAVES – Cape Sorell TAS
![Page 11: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/11.jpg)
ERA-40 DIRECTIONALWAVE CLIMATE
0
45
90
135
180
225
270
315
WAVE DIRECTION
5 6 7 8 9 10 11 12 13Hs (m)
TASMANIAHs from C-ERA-40DIRECTION from ERA-40ERA40 142.5E 47.5S1957 to 2002 (45 years)
![Page 12: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/12.jpg)
SWAN Wave Modelling
Ocean swell waves
![Page 13: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/13.jpg)
13
Technical assessment: SWAN wave modelling fine grid
![Page 14: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/14.jpg)
SWAN output
![Page 15: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/15.jpg)
Wind waves
0.1 1 10 100 1000 10000AVERAGE RECURRENCE INTERVAL (years)
0
10
20
30
40
50
60
70
80
90
100
WIN
D S
PE
ED
(m/s
for 3
sec
ond
gust
)
AS 1170-2:2002DIRECTIONAL MULTIPLIER = 1
HOBART REGION A - ANY DIRECTION
0
20
40
60
80
100
120
140
160
180
knot
s
![Page 16: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/16.jpg)
Present day water levelsTide, storm surge, but not local waves
![Page 17: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/17.jpg)
Historical events
![Page 18: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/18.jpg)
Historical events
![Page 19: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/19.jpg)
IPCC (NCCOE, 2004) Sea level rise projections
SEA LEVEL RISE for ~21000.9 m from NCCOE (2004) SLR curves based on IPCC (2001)7 m IPCC (2007) for total melting of the Greenland ice sheet 70 m if all the world’s ice sheets were to melt (GACGC, 2006)
![Page 20: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/20.jpg)
Sea level rise scenarios adoptedMost states (QLD, NSW, VIC, SA, WA) have adoptedSea level rise for planning to 2100 of 0.8 to 1.0 m
Year and Sea Level Rise relative to 1990 (m)
SLR Scenario 2050 2100
“Mid” range scenario 0.2 0.4
“High” range scenario 0.3 0.9
![Page 21: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/21.jpg)
WRL 2008 coastal hazard lines and areasDue to the study covering most of Clarence coast,Single values were used for setback lines and inundation for Roches Beach
![Page 22: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/22.jpg)
Hazard line reassessment (2011)Long term change from photogrammetry
![Page 23: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/23.jpg)
Wave climate along beach
![Page 24: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/24.jpg)
Sand transport (northward)
![Page 25: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/25.jpg)
Sand transport
![Page 26: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/26.jpg)
Components of inundation
• Tide• Barometric setup• Wind setup• Wave setup• Wave runup
![Page 27: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/27.jpg)
Inundation components
![Page 28: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/28.jpg)
Inundation levels
![Page 29: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/29.jpg)
Erosion and recession setbacks
![Page 30: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/30.jpg)
S1: Storm Erosion modelling
![Page 31: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/31.jpg)
S1: Erosion modelling
![Page 32: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/32.jpg)
Photogrammetry lines
![Page 33: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/33.jpg)
S2: Underlying recession
![Page 34: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/34.jpg)
S2: Long term change from photogrammetry
![Page 35: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/35.jpg)
S4: Dune stability
![Page 36: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/36.jpg)
Erosion Hazard Linesfor coastal setback
![Page 37: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/37.jpg)
S5: Recession due to sea level rise
![Page 38: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/38.jpg)
2011 Detailed summary of setback allowances
![Page 39: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/39.jpg)
2011 Hazard lines and areas
![Page 40: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/40.jpg)
2011 storms8 June 20119-10 July 2011
1 hour wave height Hs = 10.0 mapproximately a 4 year ARI;
48 hour wave height: Hs = 7.0 m, approximately a 40 year ARI.
Site visit by Dr Tom ShandFrom WRL
![Page 41: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/41.jpg)
2011 storms
![Page 42: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/42.jpg)
2011 storms
![Page 43: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/43.jpg)
2011 storms
![Page 44: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/44.jpg)
2011 storms9-10 July 2011
1 hour wave height Hs = 10.0 m
48 hour wave height: Hs = 7.0 m,
![Page 45: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/45.jpg)
Storm waves 9-10 July9-10 July 2011•1 hour wave height Hs = 10.0 m•approximately a 4 year ARI;
•48 hour wave height: Hs = 7.0 m,
•approximately a 40 year ARI.
![Page 46: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/46.jpg)
Water levels 9-10 July 2011
Predicted tide 1.54 m CDMeasured Port of Hobart 1.72 m CD, 0.89 m AHD< 1 year ARI ~0.2 m “storm surge”
![Page 47: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/47.jpg)
Summary / conclusions / discussion
•Rigorous contemporary coastal engineering studies have been undertaken.
•Roches Beach has receded over the last 50 years.
•Erosion, recession, inundation and potential sea level rise are the dominant coastal hazards to consider for planning.
•Numerous feasible adaptation options are available.
![Page 48: COASTAL HAZARDS, CLIMATE CHANGE AND ADAPTATION, … · Coastal hazard lines and options for ... EDEN WAVE BUOY. ... Microsoft PowerPoint - A655965.pptx [Read-Only] Author: dbellamy](https://reader030.vdocument.in/reader030/viewer/2022032713/5cd77e2288c993dc268cab25/html5/thumbnails/48.jpg)
The end