Aerial Photography

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Scenarios and Data used in Branch Dr. Julie
Richards and Sarah Gardiner University of
Southampton, Tyndall Centre

Funded by INTERREG IIIB North West
Europe www.branchproject.org
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Aims and Objectives

• To develop a methodology to assess the potential
  impact of sea level rise on coastal habitats.
• To examine adaptation to sea level rise for
  coastal habitats.
• To apply this methodology at 6 case study sites
  in the south of England.
• To extend the methodology to Cell 5 and examine
  mitigation sites.
• To provide guidance for coastal managers

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Components of Sea-Level Change

• Global-mean change
• Ice balance/average thermal expansion,
• Ocean basin change
• Pattern of sea-level change due to thermal
  expansion, changing ocean circulation, mean wind
  fields, etc.
• Geological change
• Various components such glacial isostatic
  adjustment (GIA), tectonics, human-induced
  subsidence

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Global-mean sea-level riseIPCC Third Assessment
Report
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Uncertainty in Regional Sea-Level Change 50
thermal expansion componentIPCC Third Assessment
Report
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Sea-level trends around Britain(de la
Vega-Leinert and Nicholls)
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GeologicalObservations(from Shennan and Horton,
2002)
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Branch Atlantic sea-level scenarios for the 2080s
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Branch Atlantic sea-level scenarios for the 2080s
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Branch Atlantic sea-level scenarios for the 2080s
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Branch Atlantic sea-level scenarios
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Branch Hampshire sea-level scenarios
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Sea Level Rise Scenarios (cm)
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Terrestrial vs. Coastal Climate Change Scenarios
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Aerial Photography
Source Environment Agency Channel Coastal
Observatory
May 2001 Photography courtesy of EA
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LIDAR
Airborne mapping technique which uses lasers to
map topography with a 2 meter resolution. Source
Environment Agency Channel Coastal Observatory
March 2005 LIDAR courtesy of EA
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Aerial Photographic Interpretation
Classified by experts using aerial photographs
to identify plants and habitats Accuracy
Saltmarsh 100, Grassland and CGM 75
2005 API courtesy of EA
2005 API courtesy of EA
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Floodmaps
Map showing the extent of extreme floods, 1 (1
in 100) chance of happening each year
2005 Floodmaps courtesy of EA
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Land use
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Tidal Data
Lymington Entrance
Hurst Point
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Tidal Criteria for Habitat Distribution
HAT
MHWS
MHWN
MHW
Transitional Saltmarsh
Land
Upper/Mid Saltmarsh
Pioneer Saltmarsh
Mudflat
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Saltmarsh Erosion
Saltmarsh distribution digitised from aerial
photographs (From Coastal Squeeze, Saltmarsh
Loss and SPAs. Report to English Nature. Posford
Haskoning, 2004)
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CASI
Compact Airborne Spectrographic Imager used to
image large number of spectral wavebands to
create maps of intertidal vegetation. Accuracy
for individual species varies between 25 and
80. This accuracy increases to over 80 for
groups of similar species.
2005 CASI courtesy of EA
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A partnership project
www.branchproject.org