Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami velocity model of Half Moon Bay, California

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Frequently anticipated questions:

What does this data set describe?

Title:
Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami velocity model of Half Moon Bay, California
Abstract:
A high-resolution raster dataset of simulated maximum tsunami velocities in Half Moon Bay, California, based on the Science Application for Risk Reduction (SAFRR) tsunami scenario.
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
  1. How might this data set be cited?
    Lynett, Patrick J., Henry, Kevin D., and Ross, Stephanie L., 20221115, Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source - Maximum tsunami velocity model of Half Moon Bay, California: data release DOI:10.5066/P9X1MGE7, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Lynett, Patrick J., Henry, Kevin D., and Ross, Stephanie L., 2022, Simulation and visualization of coastal tsunami impacts from the SAFRR tsunami source: data release DOI:10.5066/P9X1MGE7, 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: -122.5000
    East_Bounding_Coordinate: -122.46490
    North_Bounding_Coordinate: 37.50800
    South_Bounding_Coordinate: 37.49000
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: Oct-2022
    Currentness_Reference:
    publication date (YYYYMM) of this data release
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: raster digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Raster data set. It contains the following raster data types:
      • Dimensions 312 x 606, type Pixel
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 5.786599999999223e-05. Longitudes are given to the nearest 5.786600000000328e-05. Latitude and longitude values are specified in Decimal seconds. The horizontal datum used is WGS_1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    MaximumVelocity
    Maximum simulated tsunami wave velocity, in knots, within a given grid cell (Source: Producer Defined)
    Value
    Floating-point value of simulated maximum tsunami wave velocity within a given grid cell (Source: Producer Defined)
    Range of values
    Minimum:0
    Maximum:11.5617
    Units:knots
    Resolution:.000001

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Patrick J. Lynett
    • Kevin D. Henry
    • Stephanie L. Ross
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

This dataset was created to further extend the scope of the SAFRR project by creating detailed hydrodynamic simulations at three harbor locations in California. For the locations of 1) Oakland/Alameda, 2) Half Moon Bay, and 3) Santa Cruz, simulations at approximately 5-m resolution were performed using the high-order Boussinesq-type model COULWAVE. The Oakland/Alameda simulation area focuses on the major port facilities in the area and the Half Moon Bay and Santa Cruz simulations focus on Pillar Point Harbor and Santa Cruz Harbor, respectively.

How was the data set created?

  1. From what previous works were the data drawn?
    SAFRR Tsunami Source Scenario (source 1 of 3)
    Porter, K., Jones, L., Ross, S., Borrero, J., Bwarie, J., Dykstra, D., Geist, E.L., Johnson, L., Kirby, S., Long, K., Lynett, P., Miller, K., Mortensen, C., Perry, S., Plumlee, G., Real, C., Ritchie, L., Scawthorn, C., Thio, H. K., Wein, A., Whitmore, P., Wilson, R., and Wood, N., 2013, The SAFRR Tsunami Scenario: United States Geological Survey, Reston, VA.

    Online Links:

    Type_of_Source_Media: Digital and/or Hardcopy Resource
    Source_Contribution:
    Provides source tsunami scenario modeling parameters used for further modeling
    SF Bathymetric/Topographical Data (source 2 of 3)
    NOAA National Centers for Environmental Information, NESDIS, and National Geophysical Data Center, 2009, San Francisco Bay, California 1/3 arc-second NAVD 88 Coastal Digital Elevation Model: NOAA, Online.

    Online Links:

    Type_of_Source_Media: Digital and/or Hardcopy Resource
    Source_Contribution: Used as inputs to the COMCOT model for Half Moon Bay
    COULWAVE Users Guide (source 3 of 3)
    Lynett, Patrick, and Liu, Phillip, 2002, Modeling Wave Generation, Evolution, and Interaction with Depth-Integrated, Dispersive Wave Equations COULWAVE Code Manual Cornell University Long and Intermediate Wave Modeling Package: NOAA, Online.

    Online Links:

    Type_of_Source_Media: Digital and/or Hardcopy Resource
    Source_Contribution: User manual for Processing Step #2
  2. How were the data generated, processed, and modified?
    Date: 01-Jan-2014 (process 1 of 2)
    An open-ocean propagation simulation of the entire Pacific Ocean basin was performed using the COMCOT model (Liu and others, 1998), forced with the initial condition of the SAFRR tsunami source scenario as described in Ross and others, 2013. Person who carried out this activity:
    Lynett, Patrick
    University of Southern California
    Professor
    3620 South Vermont Ave.
    Los Angeles, CA

    213-740-3133 (voice)
    lynett@usc.edu
    Data sources used in this process:
    • SF Bathymetric/Topographical Data
    Data sources produced in this process:
    • Open-ocean propagation simulation Bathymetric/Topographical Data
    Date: 01-Jan-2014 (process 2 of 2)
    A weakly-dispersive and rotational “Boussinesq-type” modeling approach was used to simulate tsunami wave propagation to determine maximum wave amplitude and velocity using the COULWAVE model (Lynett and Liu, 2002). Person who carried out this activity:
    Lynett, Patrick
    University of Southern California
    Professor
    3620 South Vermont Ave.
    Los Angeles, CA

    213-740-3133 (voice)
    lynett@usc.edu
    Data sources used in this process:
    • Open-ocean propagation simulation Bathymetric/Topographical Data
  3. What similar or related data should the user be aware of?
    Lynett, Patrick J., Liu, Phillip L.-F., Sitanggang, Khairil I., and Kim, Dae-Hong, 2008, Modeling Wave Generation, Evolution, and Interaction with Depth-Integrated, Dispersive Wave Equations COULWAVE Code Manual Cornell University Long and Intermediate Wave Modeling Package.

    Online Links:

    Other_Citation_Details:
    Lynett, P.J., and Liu, P.L.-F., Sitanggang, K.I., and Kim, D, 2008, Modeling Wave Generation, Evolution, and Interaction with Depth-Integrated, Dispersive Wave Equations COULWAVE Code Manual Cornell University Long and Intermediate Wave Modeling Package v.2.0
    Liu, Phillip L.-F., Woo, Seung-Buhm, and Cho, Yong-Sik, 1998, Computer programs for tsunami propagation and inundation..

    Porter, K., Jones, L., Ross, S., Borrero, J., Bwarie, J., Dykstra, D., Geist, E.L., Johnson, L., Kirby, S., Long, K., Lynett, P., Miller, K., Mortensen, C., Perry, S., Plumlee, G., Real, C., Ritchie, L., Scawthorn, C., Thio, H. K., Wein, A., Whitmore, P., Wilson, R., and Wood, N., 2013, The SAFRR Tsunami Scenario.

    Online Links:

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

  1. How well have the observations been checked?
    Data on tsunami wave velocity represent a simulated scenario tsunami, therefore true values are unavailable for testing accuracy, and no logical accuracy tests were conducted. Results were examined by the modeler using ArcGIS 10.3.1 visualization methods to verify that simulation results were sensical and within expected boundaries.
  2. How accurate are the geographic locations?
    Horizontal accuracy of coordinates was performed using ArcGIS Pro visualization methods. Data were viewed in conjunction with satellite imagery to verify horizontal positioning of modeled data.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has not been conducted
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete based on the scope of the study area as described in the abstract.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

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 the U.S. Geological Survey as the originator(s) 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? These data are available in TIFF format (HMB_MaxVelocity.tif).
  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?
  5. What hardware or software do I need in order to use the data set?
    These data can be viewed with GIS software.

Who wrote the metadata?

Dates:
Last modified: 15-Nov-2022
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9X1MGE7/HMB_MaxVelocity.faq.html>
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