Post on 13-Jul-2015
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Sea Level Affecting Marshes Model (SLAMM)
Simulates the dominant processes involved in wetland conversions during long term
sea level rise
Applied and improved since 1985
Used throughout the world
http://www.warrenpinnacle.com/prof/SLAMM/
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Sea Level Affecting Marshes Model (SLAMM)
Distance Inland
Ele
vatio
n
Tidal Flat Saltmarsh Scrub-Shrub or Brackish
Tidal Fresh and Dry Land MLW
MTL
MHW
Salt Boundary
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Sea Level Affecting Marshes Model (SLAMM)
Distance Inland
Ele
vatio
n
Tidal Flat Saltmarsh Scrub-Shrub or Brackish
Tidal Fresh and Dry Land
MLW
MTL
MHW
Salt Boundary
Water
4
Model Parameters
Accretion = 3.8 mm/yr • Observations from NBNERR
(Raposa) • Consistent with Median Value
from Literature
105 Sub-Sites • Historic SLR Trend to estimate
subsidence/lift • Direction offshore • Erosion/sedimentation • Storm Frequency • Tidal Data
• Range • Datum Adjustment
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Model Limitations
Uncertainty in Sea Level Rise Projections Ground Conditions
• Some uplands may be more suitable than others • Multiple stressors on salt marshes • Freshwater wetlands may convert to open water
Model Simplifications
• Accretion rates are variable • Salinity dynamics are simplified
Changing Coastline
• Storm events • Barrier migration
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Model Input: LiDAR 2011
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Model Input: NWI 2010
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Model Results
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Model Results
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Model Results
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Model Results
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Sea Level Affecting Marshes Model (SLAMM)
Simulates the dominant processes involved in wetland conversions during long term
sea level rise
Applied and improved since 1985
Used throughout the world
http://www.warrenpinnacle.com/prof/SLAMM/