Alaska 1964 Tsunami Observations at Seaside, Oregon (alaska1964_obs.shp)

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Frequently-anticipated questions:


What does this data set describe?

Title:
Alaska 1964 Tsunami Observations at Seaside, Oregon (alaska1964_obs.shp)
Abstract:
This data set is a point shapefile representing observations of inundation and water levels from the Alaska 1964 event obtained by Tom Horning (1997). The geospatial dataset were derived from a spreadsheet provided by Bruce Jaffe.
  1. How should this data set be cited?

    Horning, Tom, and NOAA Center for Tsunami Research, 2006, Alaska 1964 Tsunami Observations at Seaside, Oregon (alaska1964_obs.shp): U.S. Geological Survey, 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: U.S. Geological Survey Data Series 236, U.S. Geological Survey, Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -123.936836
    East_Bounding_Coordinate: -123.910540
    North_Bounding_Coordinate: 46.019953
    South_Bounding_Coordinate: 45.976579

  3. What does it look like?

    <https://pubs.usgs.gov/ds/2006/236/metadata/alaska1964_obs.gif> (GIF)
    Observations of the Alaska 1964 event as described by Fiedorowicz (1997) and updated by Horning.

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

    Calendar_Date: 2006
    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 (75)

    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?

    alaska1964_obs
    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.

    SITENUMBER
    Site Number of observation (Source: Jaffe)

    Defined by Jaffe for analysis purposes

    MAPID
    Map identification number (Source: Jaffe)

    Defined by Jaffe for analysis purposes

    EVENT
    Historical event designation (Source: Jaffe)

    ValueDefinition
    1964Alaska 1964 event

    TYPE
    observation type (Source: Horning)

    ValueDefinition
    TDDTsunami drift debris
    TDLTsunami drift logs
    TMLTsunami mud layer
    TSLTarget sand layer
    TWMTsunami High Water Mark

    RUNUP_DESC
    Runup description (Source: Horning)

    ValueDefinition
    FLFoam line
    SLSurge Level
    SPLSplash level
    WLWater level

    OBS
    Observed Boolean (Source: Horning)

    ValueDefinition
    YESbased on observation
    NOno observation

    RUNUP_FT
    Runup elevation in feet based on 1973 CH2M Hill Datum (Source: Horning)

    Range of values
    Minimum:0
    Maximum:23
    Units:feet

    RUNUPMHW_M
    Runup elevation in meters based on Mean High Water datum (Source: NOS)

    Range of values
    Minimum:0
    Maximum:5.9
    Units:meters
    Resolution:1

    SFCELEV_FT
    surface elevation in feet based on CH2M Hill 1973 datum (Source: Horning)

    Range of values
    Minimum:0
    Maximum:23
    Units:feet
    Resolution:1

    VERIFIER
    observation verification source (Source: Horning)

    ValueDefinition
    GPGround photography
    NPNewspaper
    PCPersonal communication
    STSoil trench

    X_COORD
    longitude (Source: ESRI)

    Coordinates defined by features.

    Y_COORD
    latitude (Source: ESRI)

    Coordinates defined by features.


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?

    Tom Horning (Horning Geosciences), Bruce Jaffe

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

    NOAA Center for Tsunami Research
    7600 Sand Point Way NE
    Seattle, Washington 98115
    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?

    horning64obs (source 1 of 1)
    Horning, Tom, Unpublished Material, Seaside 1964 observations.

    Type_of_Source_Media: paper
    Source_Contribution: spreadsheet of Horning observations

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

    Date: Aug-2004 (process 1 of 2)
    DATA CONVERSION. The spreadsheet was converted into an ESRI ArcGIS format. The dataset was then converted from UTM coordinates to geographic coordinates using the ESRI Projection Utility.

    Data sources used in this process:

    • horning64obs

    Data sources produced in this process:

    • alaska1964_obs

    Date: Aug-2004 (process 2 of 2)
    ATTRIBUTES. Attributes were added for analysis purposes

  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: U.S. Geological Survey Open-File Report 2006-1234, U.S. Geological Survey, Menlo Park, California.

    Online Links:

    Fiedorowicz, B.K., 1997, Geologic evidence of historic and prehistoric tsunami inundation at Seaside, Oregon: Portland State University, Portland, Oregon.

    Online Links:

    Other_Citation_Details: Portland State University, M.S. Thesis


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

  1. How well have the observations been checked?

    contact Tom Horning Horning Geosciences Seaside, Oregon 97138

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

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

    Complete.

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

    The data set was checked for logical consistency by comparing with the original dataset.


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.

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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

    U.S. Geological Survey
    USGS Information Services Box 25286
    Denver, Colorado 80225-0286
    USA

    1-888-275-8747 (voice)
    infoservices@usgs.gov

  2. What's the catalog number I need to order this data set?

    U.S. Geological Survey Data Series 236

  3. What legal disclaimers am I supposed to read?

    The act of distribution shall not constitute any warranty expressed or implied by the U.S. Geological Survey as to the accuracy of these data, and no responsibility is assumed by the U.S. Geological Survey in the use of these data on any other system.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 17-Jul-2006
Last Reviewed: Jul-2006
Metadata author:
NOAA Center for Tsunami Research
c/o Angie J. Venturato
7600 Sand Point Way NE
Seattle, Washington 98115
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:


Generated by mp version 2.8.11 on Tue Dec 19 09:15:32 2006