Erosion hazard with a 1.4 meter sea-level rise, 2100

Frequently-anticipated questions:

What does this data set describe?

Title: Erosion hazard with a 1.4 meter sea-level rise, 2100
Abstract:
The Erosion hazard zone dataset for the year 2100 represents the areas vulnerable to erosion with a sea-level rise of 1.4 meters. This dataset is a merge of the Dune and Bluff hazard datasets created by Philip Williams and Associates
Supplemental_Information:
This data was developed by Philip WIlliams & Associates, LTD under contract with the Pacific Institute. For details concerning methods, see the Sea Level Rise Coastal Erosion Mapping document from Philip Williams and Associates, ltd.
  1. How should this data set be cited?

    Phillip Williams & Associates, LTD, 2009, Erosion hazard with a 1.4 meter sea-level rise, 2100: The Impacts of Sea-Level Rise on the California Coast, Pacific Institute, Oakland CA.

    Online Links:

    This is part of the following larger work.

    Heberger, Matthew, Cooley, Heather, Gleick, Peter, and Herrera, Pablo, 2009, The Impacts of Sea-Level Rise on the California Coast: Pacific Institute, Oakland CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -124.506289
    East_Bounding_Coordinate: -119.659128
    North_Bounding_Coordinate: 42.070556
    South_Bounding_Coordinate: 34.323580

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2100
    Currentness_Reference: Future scenario

  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):

      • G-polygon (72)

    2. What coordinate system is used to represent geographic features?

      The map projection used is Albers Conical Equal Area.

      Projection parameters:
      Standard_Parallel: 34.000000
      Standard_Parallel: 40.500000
      Longitude_of_Central_Meridian: -120.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 0.000000
      False_Northing: -4000000.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000
      Ordinates (y-coordinates) are specified to the nearest 0.000000
      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 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Attribute values

  7. How does the data set describe geographic features?

    Erosion_hz_yr2100

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    OBJECTID

    Shape_Leng

    Shape_Area
    Area of feature in internal units squared. (Source: ESRI)

    Positive real numbers that are automatically generated.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Philip Williams & Associates, LTD

  3. To whom should users address questions about the data?

    Pacific Institute
    c/o Matthew Heberger
    Research Associate/GIS Manager
    654 13th Street
    Oakland, CA 94612
    USA

    (510) 251-1600 (voice)
    (510) 251-2203 (FAX)
    mheberger@pacinst.org

    Hours_of_Service: 9:00 AM to 5:00 PM

Why was the data set created?

This dataset was developed to estimate extents of bluff and dune erosion given a 1.4 meter sea-level rise for the California coast.

How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Philip Williams and Associates, ltd., and Phillip Williams & Associates, LTD, 9/19/2008, PWA Sea Level Rise Coastal Erosion Mapping.

    Online Links:

    Type_of_Source_Media: ESRI shapefile

  2. How were the data generated, processed, and modified?

    Date: 1901 (process 1 of 2)
    See Sea Level Rise Coastal Erosion Mapping document from Philip Williams and Associates, ltd. for methods.

    Date: 1901 (process 2 of 2)
    Merge all polygons from Bluff_hz_yr2100.shp and Dune_hz_yr2100.shp

  3. What similar or related data should the user be aware of?

    , 2009 Pacific Institute, Oakland.

    This is part of the following larger work.

    Heberger, Matthew, Cooley, Heather, Gleick, Peter, and Herrera, Pablo, 2009 The Impacts of Sea-Level Rise on the California Coast, Pacific Institute, Oakland, Ca.

    Online Links:

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

  1. How well have the observations been checked?

    See Sea Level Rise Coastal Erosion Mapping document from Philip Williams and Associates, ltd. for methods and attribute information.

  2. How accurate are the geographic locations?

    See Sea Level Rise Coastal Erosion Mapping document from Philip Williams and Associates, ltd.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Data set has been visually inspected.

  5. How consistent are the relationships among the observations, including topology?

    The dataset is topologically correct.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
None. Data are freely downloadable and available for use in GIS and mapping subject the use constraints below.
Use_Constraints:
The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data. This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

  1. Who distributes the data set? (Distributor 1 of 1)

    Pacific Institute
    c/o Matthew Heberger
    Research Associate/GIS Manager
    654 13th Street,
    Preservation Park
    Oakland, CA 94612
    USA

    (510) 251-1600 (voice)
    (510) 251-2203 (FAX)
    mheberger@pacinst.org

    Hours_of_Service: 9:00 AM to 5:00 PM
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data.
    This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

  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 are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 24-Feb-2009
Metadata author:
Pacific Institute
c/o Matthew Heberger
Research Associate/GIS Manager
654 13th Street,
Preservation Park
Oakland, CA 94612
USA

(510) 251-1600 (voice)
(510) 251-2203 (FAX)
mheberger@pacinst.org

Hours_of_Service: 9:00 AM to 5:00 PM
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.6 on Thu Feb 26 11:55:09 2009