Significant Wave Heights, Periods, and Directions, and Air and Sea Temperature Data from a Directional Waverider Buoy off Diamond Head, Oahu during March-April 2000 (NODC Accession 0000475)

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:

What does this data set describe?

Title:
Significant Wave Heights, Periods, and Directions, and Air and Sea Temperature Data from a Directional Waverider Buoy off Diamond Head, Oahu during March-April 2000 (NODC Accession 0000475)
Abstract:
A directional waverider buoy located about one nautical mile south of Diamond Head, Oahu, provided an approximately 10-day time series of wave characteristics and temperatures. The waverider was destroyed by a tug.
Supplemental_Information:
SAMPLING STATIONS; Station ID: 09701 Location; Approximately 1 nautical mile south of Diamond Head. Water Depth(m); 120 These wave rider data were obtained from Jerome Aucan and Mark Merrifield, University of Hawaii, via Julie Thomas, Scripps Institution of Oceanography, by Patrick Caldwell, NODC Liaison Officer, Honolulu, HI.

Resource Description: NODC Accession Number 0000475

  1. How might this data set be cited?
    Mr. Jerome Aucan, Department of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii, and Dr. Mark Merrifield, Department of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii, 20051231, Significant Wave Heights, Periods, and Directions, and Air and Sea Temperature Data from a Directional Waverider Buoy off Diamond Head, Oahu during March-April 2000 (NODC Accession 0000475).

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: 157.7967
    East_Bounding_Coordinate: 157.7967
    North_Bounding_Coordinate: 21.2333
    South_Bounding_Coordinate: 21.2333
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 27-Mar-2000
    Ending_Date: 05-Apr-2000
    Currentness_Reference: Ground Condition
  5. What is the general form of this data set?
  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?
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    Hs - Significant wave height in meters; derived from the zeroth moment of the reported energy spectrum. Described as the "average height of the one third highest waves in the record". The US Army Corps of Engineers, Shore Protection Manual, 3-states that a useful estimate of significant wave height in deep water is defined as: Hs~4*sigma, where sigma is the standard deviation of the wave record. Statistically, the maximum wave height in the record is Hmax ~ 9*Hs/5. Tp - Peak period, in seconds; inverse of the frequency with the highest energy in the reported spectrum. Dp - Mean direction from which energy is coming at the peak period, in degrees clockwise from true North. Ta - Average period, in seconds; derived from the zeroth moment divided by the first moment of the reported energy spectrum. Temp - Air - Air temperature in degrees Celsius. Temp - Sea - Sea surface temperature in degrees Celsius. The data are provided as two types - parameters time series and 9-band time series. Parameter files - location - ../data filename - pm09701yyyymm.txt where pm - parmeter file, 09701 - station ID, yyyy - year, mm - month file description - ../data/parm_format.txt 9-band files - location - ../data filename - 9bandyyyymm.txt where yyyy is year, mm is month file description - ../data/9band_format.txt
    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)
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?

Why was the data set created?

The wave data were acquired for application to physical models.

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: Unknown (process 1 of 1)
    The .9 meter diameter Waverider measures wave height by measuring the vertical acceleration of the buoy. The discrepancy between vertical movement of the Waverider and the movement of the sea surface is small. When a moored Waverider follows the waves, the force of the mooring line will change. This force is produced by the changing immersion of the buoy, resulting in a error of max. 1.5%. With decreasing wave length, the buoy will not follow the wave amplitude if the wave length is less than 5m [wave period below 1.8 sec.]. If the wave length is less than 2.5m [wave period 1.25 sec.] the buoy'sresponse decreases quickly. The Directional Waverider measures wave height in the same manner as the Waverider. The directional wave measurements are calculated from the x, y, and z accelerations of the buoy.

    Sample interval was 1 hz. Data saved in nominally 30 minutes intervals.

    Instrument Type: Datawell Waverider Buoy

  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?
  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?
    Unknown
  5. How consistent are the relationships among the observations, including topology?
    See process step

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 oceanographic data are PRELIMINARY data and have not been screened for accuracy. NOAA can not be held liable for use of these data in a manner other than for perusal of preliminary oceanographic data for scientific research on coral reefs ecosystems.
  1. Who distributes the data set? (Distributor 1 of 1)
    NOAA/NESDIS/National Oceanographic Data Center
    Attn: Data Access Group, User Services Team
    SSMC-3 Fourth Floor
    Silver Spring, MD
    USA

    301-713-3277 (voice)
    301-713-3302 (FAX)
    services@nodc.noaa.gov
    Hours_of_Service: 8am-5pm, Monday through Friday
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    These oceanographic data are PRELIMINARY data and have not been screened for accuracy. NOAA can not be held liable for use of these data in a manner other than for perusal of preliminary oceanographic data for scientific research on coral reefs ecosystems. Disclaimer - NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 06-Jan-2021
Last Reviewed: 30-Mar-2009
Metadata author:
Mr. Patrick C. Caldwell
NOAA/NESDIS/NODC/NCDDC
Hawaii/US Pacific Liaison
1000 Pope Road, MSB 316
Honolulu, Hawaii
USA

(808)-956-4105 (voice)
(808) 956-2352 (FAX)
caldwell@hawaii.edu
Hours_of_Service: 8 AM to 5 PM weekdays
Contact_Instructions: check services@nodc.noaa.gov if not available
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.9.48 on Fri Apr 19 11:02:08 2024