AllScenarios_Initial_and_Final_Bed_Elevations: Modeling the Effects of Interior Headland Restoration on Estuarine Sediment Transport Processes in a Marine-Dominant Estuary: Delft3D Model Output

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Frequently anticipated questions:

What does this data set describe?

Title:
AllScenarios_Initial_and_Final_Bed_Elevations: Modeling the Effects of Interior Headland Restoration on Estuarine Sediment Transport Processes in a Marine-Dominant Estuary: Delft3D Model Output
Abstract:
The effects of interior headland restoration on estuarine sediment transport processes are assessed through process-based numerical modeling. Three proposed interior headland restoration scenarios in the Grand Bay estuary (Mississippi/Alabama) are modeled using Delft3D (developed by Deltares) to understand impacts on suspended sediment concentrations, bed level morphology and sediment fluxes under present-day conditions and a sea level rise of 0.5 meters (m). Delft3D model output of suspended sediment concentrations (SSC), sediment fluxes, initial and final bed levels, and hydrodynamic data are included in this dataset. Model output from six scenarios (comprised of three restoration (R) alternatives and two sea level (SL) conditions) as forced by 18 climatological wind and wave forcing conditions are included in this data release (Jenkins and others, 2023a). For further information regarding model input generation, set up, and analysis, refer to Jenkins and others (2023b).
  1. How might this data set be cited?
    Jenkins, Robert L. III, Passeri, Davina L., Smith, Christopher G., and Thompson, David M., 20230810, AllScenarios_Initial_and_Final_Bed_Elevations: Modeling the Effects of Interior Headland Restoration on Estuarine Sediment Transport Processes in a Marine-Dominant Estuary: Delft3D Model Output:.

    This is part of the following larger work.

    Jenkins, Robert L. III, Passeri, Davina L., Smith, Christopher G., and Thompson, David M., 20230810, Modeling the Effects of Interior Headland Restoration on Estuarine Sediment Transport Processes in a Marine-Dominant Estuary: Delft3D Model Output: U.S. Geological Survey data release doi:10.5066/P986ZR6B, U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL.

    Online Links:

    Other_Citation_Details: 2023a
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -88.7000
    East_Bounding_Coordinate: -87.7000
    North_Bounding_Coordinate: 30.5000
    South_Bounding_Coordinate: 30.0000
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 01-Jan-2020
    Ending_Date: 01-Jan-2021
    Currentness_Reference:
    model simulation
  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?
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 16
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -87.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 5
      Ordinates (y-coordinates) are specified to the nearest 5
      Planar coordinates are specified in meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.25722210100002.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Resolution: 0.01
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?
    AllScenarios_Initial_Final_BedLevels.zip
    Zipped file containing the NetCDF files (.nc) of the Initial and resultant final bed levels (meters; positive down) as produced by a one-year Delft3D mormerge simulation (Roelvink, 2006) along with grid coordinates. (Source: U.S. Geological Survey)
    Entity_and_Attribute_Overview:
    The Climate and Forecast (CF)-compliant metadata (version CF-1.6) in the header of the NetCDF files provides spatial information for projecting the data into a geographic information system (GIS). It also provides information about the conventions used for attributes in the dataset
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. 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)
    • Robert L. Jenkins III
    • Davina L. Passeri
    • Christopher G. Smith
    • David M. Thompson
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Robert L Jenkins
    U.S. Geological Survey, SOUTHEAST REGION
    Physical Scientist
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8138 (voice)
    727-502-8182 (FAX)
    rljenkins@usgs.gov

Why was the data set created?

Data were generated by the Delft3D model as output to assess effects of interior headland restoration. Appropriate use of this data includes the assessment of morphological, sediment process, and hydrodynamic differences due to the placement of restored features and sea level for the Grand Bay estuary. The AllScenarios_Initial_Final_BedLevels.zip is a dataset that consists of Federal Geographic Data Committee (FGDC) metadata record (.txt and .xml) and Network Common Data Form (NetCDF, .nc) files (under six scenarios: three restoration alternatives (R0, R1, and R2) and two sea level conditions (S0 and S1), as forced by 18 climatological wind and wave forcing conditions) containing the following variables: coordinates of the model grid (Easting and Northing) and model elevations at the initial (initial_depth) and final (final_depth) time steps of a one-year Delft3D mormerge (Roelvink, 2006) run (meters; positive down).

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: 22-Feb-2023 (process 1 of 2)
    The Delft3D model simulated process-based probabilistic morphological change resultant from hydrodynamic action (including waves) and sediment transport. Model setup is outlined in Jenkins and others (2023b). Boundary conditions in the form of a wind and wave climatology and harmonic water level boundary forcing are also outlined in Jenkins and others (2023b). The model was initialized with a given bathymetry dependent upon restoration alternatives (see Jenkins and others, 2023b) which is the initial bed level (intial_depth; meters; positive down). In the course of a one-year Delft3D run, a final resultant bed level (final_depth) was produced as a weighted average of all forcing bins, under six scenarios: three restoration alternatives (R0, R1, and R2) and two sea level conditions (S0 and S1). Model convention is positive values "down" (below mean water level) and negative values "up" (above mean water level). Person who carried out this activity:
    Robert L Jenkins
    U.S. Geological Survey, SOUTHEAST REGION
    Physical Scientist
    600 4Th Street South
    St. Petersburg, FL
    US

    727-502-8138 (voice)
    727-502-8182 (FAX)
    rljenkins@usgs.gov
    Date: 22-Feb-2023 (process 2 of 2)
    Model initial and final bed levels were extracted in MathWorks MATLAB (R2015a) with functions included in the OpenEarth toolbox (provided by Deltares; https://publicwiki.deltares.nl/display/OET/Tools). The resulting hydrodynamic variables from the model grid were then packaged into a NetCDF file (.nc) using the functions available in MATLAB for inclusion in this data release (Jenkins and others, 2023a). This step was completed for six scenarios: three restoration alternatives (R0, R1, and R2) and two sea level conditions (S0 and S1) and were packaged into a zipped file. Please see the Resource_Description section for more information. Person who carried out this activity:
    Robert L Jenkins
    U.S. Geological Survey, SOUTHEAST REGION
    Physical Scientist
    600 4Th Street South
    St. Petersburg, FL
    US

    727-502-8138 (voice)
    727-502-8182 (FAX)
    rljenkins@usgs.gov
    Data sources produced in this process:
    • AllScenarios_Initial_Final_BedLevels.zip
  3. What similar or related data should the user be aware of?
    Jenkins, R.L., Passeri, D.P., Smith, C.G., Thompson, D.M., and Smith, K.E.L., 2023, Modeling the effects of interior headland restoration on estuarine sediment transport processes in a marine-dominant estuary: Frontiers in Marine Science Unknown.

    Online Links:

    Other_Citation_Details: 2023b
    Roelvink, J.A., 200602, Coastal morphodynamic evolution techniques: Coastal Engineering Volume 53, Issues 2-3, Elsevier BV, Online.

    Online Links:

    Other_Citation_Details: Pages 277-287

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

  1. How well have the observations been checked?
    A deterministic validation simulation was run for the period of 2017/01/03 through 2017/01/23. Model output was evaluated against observed waves and water levels during that time-period and the model results accurately predicted the observed conditions. More information about model accuracy and validation is outlined in Jenkins and others (2023b)
  2. How accurate are the geographic locations?
    Within the Delft3D model, the horizontal coordinates were projected to the North American Datum of 1983 (NAD83) Universal Transverse Mercator (UTM) Zone 16 North (16N) coordinate system with an approximate resolution of 5 m.
  3. How accurate are the heights or depths?
    Within the Delft3D model, the vertical positions were projected to the North American Vertical Datum of 1988 (NAVD88) with an estimated resolution of 0.01 m.
  4. Where are the gaps in the data? What is missing?
    These are the complete initial and resultant final bed levels (meters; positive down) from the mormerge Delft3D run simulating the period 2020/01/01 through 2021/01/01 (Roelvink, 2006). This dataset is considered complete for the information presented, as described in the abstract section. 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?
    The initial and resultant final bed levels are the mormerge Delft3D run simulating the period 2020/01/01 through 2021/01/01 for each model cell (Roelvink, 2006).

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 Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center as the originator of these data in future products or derivative research.
  1. Who distributes the data set? (Distributor 1 of 1)
    Robert L Jenkins
    U.S. Geological Survey, SOUTHEAST REGION
    Physical Scientist
    600 4Th Street South
    St. Petersburg, FL
    US

    727-502-8138 (voice)
    727-502-8182 (FAX)
    rljenkins@usgs.gov
  2. What's the catalog number I need to order this data set? SL0_R0_Initial_Final_BottomDepths_grid_cell_centers.nc, SL0_R1_Initial_Final_BottomDepths_grid_cell_centers.nc, SL0_R2_Initial_Final_BottomDepths_grid_cell_centers.nc, SL1_R0_Initial_Final_BottomDepths_grid_cell_centers.nc, SL1_R1_Initial_Final_BottomDepths_grid_cell_centers.nc, and SL1_R2_Initial_Final_BottomDepths_grid_cell_centers.nc
  3. What legal disclaimers am I supposed to read?
    This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 10-Aug-2023
Metadata author:
Robert L Jenkins
U.S. Geological Survey, SOUTHEAST REGION
Physical Scientist
600 4th Street South
St. Petersburg, FL
US

727-502-8138 (voice)
727-502-8182 (FAX)
rljenkins@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/AllScenarios_Initial_and_Final_Bed_Elevations_metadata.faq.html>
Generated by mp version 2.9.51 on Wed Aug 16 13:01:43 2023