TIDESTATIONS - Pacific Northwest Water-Level Stations and Tidal Datum Distributions

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Frequently anticipated questions:


What does this data set describe?

Title:
TIDESTATIONS - Pacific Northwest Water-Level Stations and Tidal Datum Distributions
Abstract:
This geospatial data set depicts the locations of National Ocean Service water-level stations to determine tidal datum distributions with the Seaside, Oregon, region.
  1. How might this data set be cited?
    NOAA Center for Tsunami Research, 2006, TIDESTATIONS - Pacific Northwest Water-Level Stations and Tidal Datum Distributions: Data Series 236, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Menlo Park, California.

    Online Links:

    This is part of the following larger work.

    Wong, Florence L., Venturato, Angie J., and Geist, Eric L., 2006, Seaside, Oregon Tsunami Pilot Study -- Modernization of FEMA Flood Hazard Maps: GIS Data: Data Series 236, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -124.616670
    East_Bounding_Coordinate: -123.766666
    North_Bounding_Coordinate: 48.368330
    South_Bounding_Coordinate: 40.766670
  3. What does it look like?
    http://pubs.usgs.gov/ds/2006/236/metadata/tidestations.gif (GIF)
    Map of the central Cascadia region showing the locations of Seaside and relevant tide stations
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2004
    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):
      • Entity point (15)
    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 1.000000. Longitudes are given to the nearest 1.000000. Latitude and longitude values are specified in Decimal degrees. 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.
  7. How does the data set describe geographic features?
    tidestations
    name of shapefile (Source: none)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    ID
    user-defined identification number (Source: none)
    ValueDefinition
    numberuser-defined identification value
    NAME
    Water-level station name (Source: NOS) Feature defined by NOS
    STATIONID
    Water-level station identification number (Source: NOS) Feature defined by NOS
    STATE
    State in which station exists (Source: none) Feature defined by NOS
    LATITUDE
    Latitude of water-level station (Source: NOS) Feature defined by NOS
    LONGITUDE
    Longitude of water-level station (Source: NOS) Feature defined by NOS
    DIST_KM
    Distance in kilometers from Seaside, Oregon (Source: NOAA Center for Tsunami Research)
    Range of values
    Minimum:0
    Maximum:583
    MAXOBS
    Maximum observed water-level (Source: NOS) Feature defined by NOS
    MHHW
    Mean Higher High Water (Source: NOS) Feature defined by NOS
    MHW
    Mean High Water (Source: NOS) Feature defined by NOS
    MTL
    Mean Tide Level (Source: NOS) Feature defined by NOS
    MSL
    Mean Sea Level (Source: NOS) Feature defined by NOS
    MLW
    Mean Low Water (Source: NOS) Feature defined by NOS
    NAVD88
    North American Vertical Datum of 1988 (Source: NGS) Feature defined by NGS
    NGVD29
    National Geodetic Vertical Datum of 1929 (Source: NGS) Feature defined by NGS
    MLLW
    Mean Lower Low Water (Source: NOS) Feature defined by NOS
    MINOBS
    Minimum Observed Water Level (Source: NOS) Feature defined by NOS
    SOURCE
    source of datum distributions (Source: user-defined)
    ValueDefinition
    observedDatums based on observed water-level data
    interpolateddatum values based on values interpolated between other water-level stations

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • NOAA Center for Tsunami Research
  2. Who also contributed to the data set?
    NOAA National Ocean Service, NOAA National Geodetic Survey, NOAA Center for Tsunami Research
  3. To whom should users address questions about the data?
    NOAA Center for Tsunami Research
    Attn: Angie J. Venturato
    7600 Sand Point Way NE
    Seattle, Washington
    USA

    206-526-6556 (voice)
    Angie.J.Venturato@noaa.gov

Why was the data set created?

This data set is one of a collection of spatially referenced digital files in a geographic information system related to the Seaside, Oregon, Tsunami Pilot Study.
Federal Emergency Management Agency (FEMA) Federal Insurance Rate Map (FIRM) guidelines do not currently exist for conducting and incorporating tsunami hazard assessments that reflect the substantial advances in tsunami research achieved in the last two decades (Tsunami Pilot Study Working Group, 2006). Therefore, as part of the FEMA Modernization Program, a Tsunami Pilot Study was carried out in the Seaside/Gearhart, Oregon, area to provide information from which tsunami mapping guidelines could be developed. This area was chosen because it is typical of coastal communities in the section of the Pacific Coast from Cape Mendocino to the Strait of Juan de Fuca. There was also considerable interest shown by state agencies and local stakeholders in mapping the tsunami threat to this region. The study was an interagency effort by scientists from the U.S. Geological Survey, the National Oceanic and Atmospheric Administration, the University of Southern California, and the Middle East Technical University. We present the GIS data from that report in this publication.
These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created?

  1. From what previous works were the data drawn?
    nostides (source 1 of 2)
    NOAA National Ocean Service, 2004, Water Level Station Benchmarks.

    Online Links:

    Type_of_Source_Media: online
    Source_Contribution: tidal datum information and associated attributes
    ngscontrol (source 2 of 2)
    Survey, National Geodetic, 2004, Vertical Geodetic Control Data.

    Online Links:

    Type_of_Source_Media: online
    Source_Contribution: geodetic datum information and associated attributes
  2. How were the data generated, processed, and modified?
    Date: 2004 (process 1 of 1)
    Source data were used to create a table of coordinates and associated attributes. The table was imported to create a point shapefile. The data are discussed further in:
    Mofjeld, H.O., et al. (2004): Background tides and sea level variations at Seaside, Oregon, NOAA Tech. Memo. 2736, 1-19. Data sources used in this process:
    • nostides
    • ngscontrol
    Data sources produced in this process:
    • tidestations
  3. What similar or related data should the user be aware of?
    Tsunami Pilot Study Working Group, 2006, Seaside, Oregon Tsunami Pilot Study -- Modernization of FEMA Flood Hazard Maps: Open-File Report 2006-1234, U.S. Geological Survey, Menlo Park, California.

    Online Links:

    Venturato, A.J., 2005, A digital elevation model for Seaside, Oregon: Procedures, data sources, and analyses: Pacific Marine Environmental Laboratory, Seattle, Washington.

    Online Links:

    Other_Citation_Details: NOAA Tech Memo 2812
    H.O. Mofjeld, A.J. Venturato, F.I. Gonzalez, and V.V. Titov, 2004, Background tides and sea level variations at Seaside, Oregon: Pacific Marine Environmental Laboratory, Seattle, Washington.

    Online Links:

    Other_Citation_Details: NOAA Tech Memo 2736
    NOAA National Ocean Service, 2004, Water Level Station Benchmarks: NOAA National Ocean Service, Silver Spring, Maryland.

    Online Links:

    Other_Citation_Details:
    Benchmark information was obtained for 13 stations: Neah Bay, Toke Point, South Bend, Astoria, Hammond, Seaside, Garibaldi, Depoe Bay, South Beach, Charleston, Port Orford, Crescent City, and North Spit
    NOAA National Geodetic Survey, 2004, Vertical geodetic control data: NOAA National Geodetic Survey, Silver Spring, Maryland.

    Online Links:


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

  1. How well have the observations been checked?
    These data contain attributes automatically generated by ESRI ArcGIS software and two user-defined attributes that were developed by NOAA National Ocean Service, National Geodetic Survey, and NOAA Center for Tsunami Research. Refer to cross references for more information.
  2. How accurate are the geographic locations?
    Refer to cross references.
  3. How accurate are the heights or depths?
    Refer to cross references.
  4. Where are the gaps in the data? What is missing?
    Complete.
  5. How consistent are the relationships among the observations, including topology?
    Refer to cross references

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:
These data were created for the sole purpose of the Seaside, Oregon, Tsunami Pilot Study. It is not meant for navigational means. The National Oceanic and Atmospheric Administration makes no expressed or implied warranty regarding the accuracy of these data.
The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data on any other system.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the National Oceanic and Atmospheric Administration (NOAA) as the originator of the dataset.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    Information Services Box 25286
    Denver, Colorado
    USA

    1-888-275-8747 (voice)
    infoservices@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable Data: U.S. Geological Survey Data Series 236
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS) and National Oceanic and Atmospheric Administration (NOAA) no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  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: 27-Jun-2006
Last Reviewed: Jul-2006
Metadata author:
NOAA Center for Tsunami Research
Attn: Angie J. Venturato
7600 Sand Point Way NE
Seattle, Washington
USA

206-526-6556 (voice)
Angie.J.Venturato@noaa.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/oregon/seaside/tidestations.shp.faq.html>
Generated by mp version 2.9.49 on Fri Sep 13 15:01:15 2019