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

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Frequently anticipated questions:


What does this data set describe?

Title:
BEWARE database: A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts
Abstract:
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 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.
These data accompany the following publication: Pearson, S.G., Storlazzi, C.D., van Dongeren, A.R., Tissier, M.F.S., and Reniers, A.J.H.M., 2017, A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts: Journal of Geophysical Research—Oceans, https://doi.org/10.1002/2017JC013204.
  1. How might this data set be cited?
    Pearson, Stuart G., Storlazzi, Curt D., Ap R. van Dongeren, Tissier, Marion F.S., and Reniers, Ad J.H.M., 2017, BEWARE database: A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts: data release DOI:10.5066/F7T43S20, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -180.00000000
    East_Bounding_Coordinate: 180.00000000
    North_Bounding_Coordinate: 90.00000000
    South_Bounding_Coordinate: -90.00000000
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2017
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: NetCDF files
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      The model results presented are not for a particular geographic areas.
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    NetCDF files are self-contained and attribute information may be found in the header of the file itself.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Stuart G. Pearson
    • Curt D. Storlazzi
    • Ap R. van Dongeren
    • Marion F.S. Tissier
    • Ad J.H.M. Reniers
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Curt Storlazzi
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Research Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7521 (voice)
    831-427-4748 (FAX)
    cstorlazzi@usgs.gov

Why was the data set created?

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.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 2017 (process 1 of 1)
    The following steps were used in development of the model. For an in-depth discussion of processing, see Pearson and others (2017). 1. Schematize the reef and forcing conditions, and formulate a range of input parameters based on field measurements and typical values. 2. Simulate nearshore hydrodynamics for the full range of parameters using the validated process-based wave and water level XBeach Non-Hydrostatic (XBHN) model to create a synthetic database of hydrodynamic responses to extrinsic forcing and intrinsic coral reef geomorphology. 3. Develop a Bayesian network and train with model results. 4. Validate the Bayesian network by comparing predictions to field observations. 5. Assess the performance of the Bayesian network using techniques such a Log-Likelihood ratios and confusion matrices.
  3. What similar or related data should the user be aware of?
    Pearson, Stuart G., Storlazzi, Curt D., Ap R. van Dongeren, Tissier, Marion F.S., and Reniers, Ad J.H.M., 2018, A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts: Journal article Journal of Geophysical Research-Oceans, American Geophysical Union, Washington, DC.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    See Pearson and others (2017) for an in-depth discussion of accuracy.
  2. How accurate are the geographic locations?
    No formal positional accuracy tests were conducted, nor are they applicable
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted, nor are they applicaple
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted. See Pearson and others (2017) for additional information.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge Deltares, the U.S. Geological Survey, and TU Delft as the originators of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable data in NetCDF format.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 10-Oct-2017
Metadata author:
Curt Storlazzi
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Research Geologist
2885 Mission Street
Santa Cruz, CA
United States of America

831-460-7521 (voice)
cstorlazzi@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/BEWARE_Database_metadata.faq.html>
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