oahu_slp - Coastal Slope along the coastal zone of Oahu, Hawaii

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Frequently anticipated questions:

What does this data set describe?

Title: oahu_slp - Coastal Slope along the coastal zone of Oahu, Hawaii
Abstract: Coastal Slope along the coastal zone of Oahu, Hawaii
Supplemental_Information:
Data included here were derived from the technical hazard maps published in the 'Atlas of Natural Hazards in the Hawaiian Coastal Zone' (Fletcher et al., 2002) The atlas reports on a program of research that assigns a relative ranking scale to seven natural coastal hazards. The ranking is based on the historical trends and natural factors influencing site vulnerability and hazard intensity in the Hawaiian coastal zone. Information contained within the Atlas is largely based on previous investigations by scientific and engineering researchers and county, state, and federal offices and agencies. The unique aspect of this report is that, to the extent possible, it assimilates prior efforts in documenting Hawaiian coastal hazards and combines existing knowledge into a single comprehensive coastal hazard data set. It is by no means the final word on coastal hazards in Hawaii. Every hazardous phenomenon described, and others such as slope failure and rocky shoreline collapse, need to be more carefully quantified, forecast, and mitigated. The technical hazard maps were constructed for the entire shorelines of the islands of Kauai, Oahu, Molokai, Lanai, Maui, and Hawaii at a scale of 1:50,000 (1 inch on the map equals approximately 0.8 miles). The technical map series displays the nominal relative intensity (on a ranked scale of 1 to 4, where 4 is most intense; overall hazard assessment is on a ranked scale of 1 to 7, where 7 is most intense) of each of the seven hazards following a set of specific definitions.
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?
    Fletcher, C.H., Grossman, E.E., Richmond, B.M., and Gibbs, A.E., 2002, oahu_slp - Coastal Slope along the coastal zone of Oahu, Hawaii: U.S. Geological Survey, CMG, Menlo Park, California.

    Online Links:

    Other_Citation_Details: none
    This is part of the following larger work.

    Fletcher, C.H., Grossman, E.E., Richmond, B.M., and Gibbs, A.E., 2002, Atlas of Natural Hazards in the Hawaiian Coastal Zone: U.S. Geological Survey Geologic Investigations Series I-2761, U.S. Geological Survey, Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -158.31
    East_Bounding_Coordinate: -157.62
    North_Bounding_Coordinate: 21.82
    South_Bounding_Coordinate: 21.14
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1994
    Ending_Date: 2002
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • String (592)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 4
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -159.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using Coordinate pair
      Planar coordinates are specified using distance and bearing values. Resolution of distance values: 0.1
      Resolution of bearing values: 0.1
      Bearing is specified in units of Decimal seconds
      Bearing is measured North
      Bearing is measured from the Assumed meridian
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80 (GRS 80).
      The semi-major axis of the ellipsoid used is 6378137.0000000.
      The flattening of the ellipsoid used is 1/298.26.
  7. How does the data set describe geographic features?
    .dbf (table)
    attribute information for shapefiles are contained in tables, or spreadsheets, in .dbf format (Source: operator)
    Shape
    the type of shapefile (Source: Arcview)
    Formal codeset
    Codeset Name:PolylineM
    Codeset Source:Arcview
    From
    point where measured polyline begins (Source: dynamic segmentation extention)
    Range of values
    Minimum:0.0000
    Maximum:191969.8354
    Units:meters
    To
    point where measured polyline ends (Source: dynamic segmentation extention)
    Range of values
    Minimum:0.0000
    Maximum:191969.8354
    Units:meters
    CoastSlope
    the percent slope associated with the angle of the coastal plain in the elevation range of 0 to 200 feet above sea level (Source: 'Atlas of Natural Hazards in the Hawaiian Coastal Zone' (Fletcher et al., 2002))
    ValueDefinition
    <20%indicates a gentle slope with a gradient less than or equal to 20 percent (less than or equal to 11.5 degrees)
    >20%, <45%indicates a moderate slope with a gradient greater than 20 percent and less than or equal to 45 percent (greater than 11.5 degrees and less than or equal to 26.7 degrees)
    >45%indicates a steep slope with a gradient greater than 45 percent (greater then 26.7 degrees)
    island
    indicates the island being assessed (Source: operator)
    Formal codeset
    Codeset Name:island_oahu
    Codeset Source:operator
    Entity_and_Attribute_Overview:
    A measured polyline (PolylineM), containing the Coastal Slope attribute information for the coastline of Oahu.
    Entity_and_Attribute_Detail_Citation: none

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Fletcher, C.H.
    • Grossman, E.E.
    • Richmond, B.M.
    • Gibbs, A.E.
  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
    US

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

Why was the data set created?

The purpose of this dataset is to provide, in digital format, the information included in the technical hazard maps published in the 'Atlas of Natural Hazards in the Hawaiian Coastal Zone' (Fletcher et al., 2002) for use by citizens, scientists, and regulatory agencies.

How was the data set created?

  1. From what previous works were the data drawn?
    none (source 1 of 1)
    State of Hawaii, Office of Planning, 199706, Coastline: State of Hawaii, Office of Planning, Honolulu, Hawaii.

    Online Links:

    Other_Citation_Details: none
    Type_of_Source_Media: coastline
    Source_Contribution: na
  2. How were the data generated, processed, and modified?
    Date: 2002 (process 1 of 6)
    The original data used to create this shapefile was converted to an ARCVIEW polyline shapefile from an ARC/INFO .e00 coverage of the Hawaiian Islands distributed by the State of Hawaii via the web. The line file was subset into separate lines for each island, and the topology was then "cleaned up" using an ESRI sample script. The line was then dynamically segmented according to the existing coastal hazard atlas. Person who carried out this activity:
    Bruce Richmond
    USGS Pacific Coastal and Marine Science Center
    Geologist
    2885 Mission St.
    Santa Cruz, CA
    USA

    831-427-4731 (voice)
    brichmond@usgs.gov
    Data sources used in this process:
    • coastline
    Data sources produced in this process:
    • none
    Date: 15-Jun-2016 (process 2 of 6)
    Metadata changes: updated online linkages in Citation Information; added Standard Order Process to Distribution Information. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 25-Jan-2017 (process 3 of 6)
    Metadata changes: Originator name (Richmond, B.M.) corrected in Larger Work Citation Information; Keywords section optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 26-Apr-2018 (process 4 of 6)
    Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 27-Nov-2019 (process 5 of 6)
    General edits were made to metadata file to bring it up to current PCMSC standards. Typos were corrected; originator tag in citation was changed from USGS to specific people; xml coding of attributes were refined; Point of Contact and Metadata Contact were changed to static PCMSC contact information; statements of access, use, and liability were updated. No data or data information were changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 19-Oct-2020 (process 6 of 6)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    All attributes created during the creation process were verified by displaying the lines in both the database and the spatial coverage, but no formal tests were performed.
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
  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?
    none
  5. How consistent are the relationships among the observations, including topology?
    These data are believed to be logically consistent, though no tests were performed. Line geometry is topologically clean.

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 the U.S. Geological Survey (USGS), University of Hawaii School of Ocean, Earth Science, and Technology (UH-SOEST), State of Hawaii Office of Planning, and the National Oceanic and Atmospheric Administration (NOAA) as the collective sources of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: Bruce Richmond
    Geologist
    2885 Mission St.
    Santa Cruz, CA
    USA

    831-427-4731 (voice)
    brichmond@usgs.gov
  2. What's the catalog number I need to order this data set? downloadable over the internet
  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: 19-Oct-2020
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA
US

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/SeriesReports/iMAP/i2761/oahu_slp.faq.html>
Generated by mp version 2.9.50 on Wed Oct 13 09:08:58 2021