Southwest Molokai non-directional wave data taken during 2001-2002 at 5 areas in depths of 4-13 m (NODC Accession 0011265)

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Frequently anticipated questions:


What does this data set describe?

Title:
Southwest Molokai non-directional wave data taken during 2001-2002 at 5 areas in depths of 4-13 m (NODC Accession 0011265)
Abstract:
US Geological Survey (USGS) Western Region Coastal and Marine Geology Team deployed NIWA Dobie-A non-directional wave gauges in 5 nearshore areas of southwestern Molokai in depths from 4 to 13m during February 2001 - February 2002. Finalized data are provided in ASCII format.
Supplemental_Information:
Entry_ID Unknown Sensor_Name NIWA Dobie-A non-directional wave gauge Source_Name manual Project_Campaign: USGS S.Molokai Coral Reef Project Storage_Medium ASCII Reference None Online_size: 1187 kilobytes

Resource Description: NODC Accession Number 0011265

  1. How might this data set be cited?
    Dr. Curt Storlazzi - US Geological Survey (USGS), Western Region Coastal and Marine Geology Team, Unknown, Southwest Molokai non-directional wave data taken during 2001-2002 at 5 areas in depths of 4-13 m (NODC Accession 0011265).

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -157.24618
    East_Bounding_Coordinate: -156.79361
    North_Bounding_Coordinate: 21.08705
    South_Bounding_Coordinate: 21.03837
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 02-Feb-2001
    Ending_Date: 15-Feb-2002
    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:
    * DYD Decimal year day 2001; dates/times are local Hawaiian Standard Time (GMT-11:00). * 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, 3-11, 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. ASC-II tab-delimited text. Data gaps and null values are denoted by the -99999 delimiter.

    Directory /1 HOL_NGDC_metadata_form.doc metadata, MS Word HOL_NGDC_metadata_form.txt same metadata, text MKK_2001_HOL_HsTd.txt data MKK_2001_HsTd_descrip.txt description

    Directory ./2: IKA_NGDC_metadata_form.doc metadata, MS Word IKA_NGDC_metadata_form.txt same metadata, text MKK_2001_HsTd_descrip.txt description MKK_2001_IKA_HsTd.txt data

    Directory ./3: KAM_NGDC_metadata_form.doc metadata, MS Word KAM_NGDC_metadata_form.txt same metadata, text MKK_2001_HsTd_descrip.txt description MKK_2001_KAM_HsTd.txt data

    Directory ./4: KLO_NGDC_metadata_form.doc metadata, MS Word KLO_NGDC_metadata_form.txt same metadata, text MKK_2001_HsTd_descrip.txt description MKK_2001_KLO_HsTd.txt data

    Directory ./5: MKK_2001_HsTd_descrip.txt description MKK_2001_PAL_HsTd.txt data PAL_NGDC_metadata_form.doc metadata, MS Word PAL_NGDC_metadata_form.txt same metadata, text

    Directory ./6: MKK_2001_HsTd_descrip.txt description MKK_2001_PUK_HsTd.txt data PUK_NGDC_metadata_form.doc metadata, MS Word PUK_NGDC_metadata_form.txt same metadata, text

    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?
    US Geological Survey Western Region Coastal and Marine Geology Team USGS Pacific Science Center
  3. To whom should users address questions about the data?
    Dr. Curt Storlazzi
    US Geological Survey (USGS)
    Researcher
    Western Region Coastal and Marine Geology Team
    Santa Cruz, California
    USA

    +1-831-427-4721 (voice)
    cstorlazzi@usgs.gov

Why was the data set created?

To collect research-grade scientific data to provide baseline measurements and for nearshore circulation studies.

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)
    A NIWA Dobie-A non-directional wave gauge was used to acquire this dataset. The Dobie was used in Time Series mode and thus recorded a time series of pressure, which was converted to water depth assuming a water density and atmospheric pressure. Significant wave height (Hs) and dominant wave period (Td) were computed from these 512 s time series of water depth at 2 Hz using the US Army Corps of Engineers (1989) SUPERDUCK spectral method. The high-frequency and low-frequency cut-offs were 0.04 Hz / 25 s and 0.25 Hz / 4 s, respectively. Person who carried out this activity:
    Dr. Curt Storlazzi
    US Geological Survey (USGS)
    Researcher
    Western Region Coastal and Marine Geology Team
    Santa Cruz, California
    USA

    +1-831-427-4721 (voice)
    cstorlazzi@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?
  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?
    The 2001-2002 sets were 100% complete
  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: Dataset credit required
  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)
    NODC.Services@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?
    NOAA makes no warranty regarding these data,expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC 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: 29-Mar-2020
Last Reviewed: 11-Jan-2010
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)

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