Parent Layer: Coastal Protection

Name: Coastal Exposure

Display Field: Coastal_Ex

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Heatmap of the category of coastal exposure (red displays highest coastal exposure to lowest in blue) The coastal exposure is defined by the Hazard Index (HI) that was calculated as follows: HI=√(7&R_hab R_geo R_rel R_win R_wav R_slr R_sur ) where the relative ranking (R) indicates parameter that affects hazard index including, the ranking of habitats (R_hab; is calculated by the habitat risk exposure function embedded in Coastal Vulnerability toolbox of InVEST model, Eq. xx), the effects of geomorphology type (R_geo) and coastal relief (R_rel), and the exposures from wind (R_win), waves (R_wav), sea level rise (R_slr), and storm surge potential (R_sur). R_hab=max(1,4.8-0.5 √((1.5 〖max〗_h^N (5-R_h ))^2+(∑_h^N▒〖(5-R_h )^2-〖max〗_h^N (5-R_h )^2 〗) )) Eq.xx Where N is the number of habitat layers within the maximum protection distance of that habitat type and R_h is the risk rank of habitat type h. The relative ranking is defined independently for each parameter to assign the level of exposures from high (rank = 5) to low (rank = 1). For almost all the parameters, except for habitats and geomorphology, the rank is calculated by classifying the values using quartile sampling distribution, from first quartile or top 20% (rank = 5) to fifth quartile (rank = 1). Meanwhile, the habitat and geomorphology ranking systems are following the methods proposed by Gornitz (1990), and also see Arkema et al. (2013).

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Spatial Reference: 102100  (3857)

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• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Coastal_Ex ( type: esriFieldTypeString, alias: Coastal_Ex, length: 10 )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )

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