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BEWARE database: A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts

Dates

Publication Date
Time Period
2017

Citation

Pearson, S.G., Storlazzi, C.D., van Dongeren, A.R., Tissier, M.F.S., Reniers, A.J.H.M., 2017, BEWARE database: A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts: U.S. Geological Survey data release, https://doi.org/10.5066/F7T43S20.

Summary

A process-based wave-resolving hydrodynamic model (XBeach Non-Hydrostatic, ‘XBNH’) was used to create a large synthetic database for use in a “Bayesian Estimator for Wave Attack in Reef Environments” (BEWARE), relating incident hydrodynamics and coral reef geomorphology to coastal flooding hazards on reef-lined coasts. Building on previous work, BEWARE improves system understanding of reef hydrodynamics by examining the intrinsic reef and extrinsic forcing factors controlling runup and flooding on reef-lined coasts. The Bayesian estimator has high predictive skill for the XBNH model outputs that are flooding indicators, and was validated for a number of available field cases. BEWARE is a potentially powerful tool for use in early warning [...]

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BEWARE_Database_metadata.xml
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BEWARE_Database.nc 41.91 MB

Purpose

Low-lying tropical coasts fronted by coral reefs are threatened by the effects of climate change, sea-level rise, and flooding caused by waves.  However, the reefs on these coasts differ widely in their shape, size, and physical characteristics; the wave and water level conditions affecting these coastlines also vary in space and time. These factors make it difficult to predict flooding caused by waves along coral reef-lined coasts. We created a system (“BEWARE”) that estimates how different wave, water level, and reef combinations can lead to flooding. This tool tells us what information is needed to make good predictions of flooding. BEWARE can be used to make short-term predictions of flooding in early warning systems, or long-term predictions of how climate change will affect flooding caused by waves on coral reef-lined coasts. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7T43S20

NetCDF OPeNDAP Service Extension

summaryA process-based wave-resolving hydrodynamic model (XBeach Non-Hydrostatic, ‘XBNH’) was used to create a large synthetic database for use in a “Bayesian Estimator for Wave Attack in Reef Environments” (BEWARE), relating incident hydrodynamics and coral reef geomorphology to coastal flooding hazards on reef-lined coasts. Building on previous work, BEWARE improves system understanding of reef hydrodynamics by examining the intrinsic reef and extrinsic forcing factors controlling runup and flooding on reef-lined coasts. The Bayesian estimator has high predictive skill for the XBNH model outputs that are flooding indicators, and was validated for a number of available field cases. BEWARE is a potentially powerful tool for use in early warning systems or risk assessment studies, and can be used to make projections about how wave-induced flooding on coral reef-lined coasts may change due to climate change.
variables
nameID
units-
namenumComponents
units-
nameeta0
unitsOffshore water level [m]
nameH0
unitsOffshore significant wave height [m]
nameH0L0
unitsOffshore wave steepness, -
namebeta_ForeReef
unitsFore reef slope [-]
namebeta_Beach
unitsBeach slope [-]
nameW_reef
unitsReef width [m]
nameCf
unitsDimensionless friction coefficient [-]
nameetaMean_innerReefFlat
unitsmean water level at the inner reef flat [m]
nameetaMean_meanReefFlat
unitsmean water level averaged across the three reef flat observation points (reef crest, mid-reef, inner reef) [m]
nameHm0
unitsignificant wave height at the inner reef flat calculated as Hm0 = 4*sqrt(m0) of the total spectrum there [m]
nameHm0_VLF
unitssignificant wave height at the inner reef flat calculated as Hm0 = 4*sqrt(m0) of the VLF-filtered spectrum there [m]
nameHm0_IG
unitssignificant wave height at the inner reef flat calculated as Hm0 = 4*sqrt(m0) of the IG-filtered spectrum there [m]
nameHm0_LF
unitssignificant wave height at the inner reef flat calculated as Hm0 = 4*sqrt(m0) of the LF-filtered spectrum there [m]
nameHm0_SS
unitssignificant wave height at the inner reef flat calculated as Hm0 = 4*sqrt(m0) of the SS-filtered spectrum there [m]
nameTm1_0
unitsmean spectral wave period (Tm-1,0) as calculated from the m-1, m0 moments of the total spectrum at the inner reef flat [s]
nameR2pIndex
unitsrunup (2% exceedance value) on beach slope [m]
nameetaComponents
units1) - eta_offshore [m] offshore water level (should be same as WL variable) 2) - eta_setup [m] wave setup (mean water level minus offshore WL) 3) - eta_vlf2 [m] (mean of highest 2% of filtered VLF time series) 4) - eta_ig2 [m] (mean of highest 2% of filtered IG time series) 5) - eta_ss2 [m] (mean of highest 2% of filtered SS time series) 6) - eta_2p [m] (mean of highest 2% of original time series across all frequencies)
namerunupComponents
files
nameBEWARE_Database.nc
contentTypeapplication/x-netcdf
pathOnDisk__disk__e5/aa/85/e5aa858027e38175bdc9c0087ca6825760eae39c
size43941252
dateUploadedThu Sep 21 17:53:34 MDT 2017
originalMetadatatrue
checksum
valuee13224ee5039e3ef2f9de8cb4f4fca00
typeMD5
titleBEWARE_Database.nc
urlTBD

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