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What does this data set describe?

Geodetic data of field activity L-12-97-OA in Southeast Lanikai (1)Oahu, Hawaii from 07/30/1997 to 07/30/1997
University of Hawaii,United States Geological Survey, Menlo Park, California. Chief Scientist: Bruce Richmond. Geodetic data (geodetic, navigation) of field activity L-12-97-OA in Southeast Lanikai (1)Oahu, Hawaii from 07/30/1997 to 07/30/1997, <>.

Equipment Used -
geodetic data directory exists
navigation data directory exists
Notes -
Other field activities at Southeast Lanikai (1)
on Oahu also have Activity IDs beginning with "L-1" and ending with "-OA"
Cross-shore beach profile data were collected as a component of
the Hawaii Coastal Erosion Study, a cooperative effort by U.S.
Geological Survey and University of Hawaii in order to document
seasonal and longer-term variations in beach volume and behavior.
The overall objectives of the Hawaii Coastal Erosion Study are to
document the recent history of shoreline change in Hawaii and to
determine the primary factor(s) responsible for coastal erosion
in low-latitude environments for the purpose of predicting future
changes and to provide quality scientific data that is useful to
other scientists, planners, engineers, and coastal managers.
The overall strategy consists of first quantifying the magnitude
and location of serious erosion problems followed by close monitoring
of coastal change in critical areas. Bi-annual beach profiles have
been collected at over 40 critical beach sites on the islands of Oahu
and Maui. Once sufficient background information is analyzed and key
problems are defined, field sites will be selected for detailed process-
oriented studies (both physical and biological) to gain an understanding
of the complex relationships between reef carbonate production, sediment
dispersal, and the interaction of man-made structures with sediment
movement along the shore.
Information derived from this project will be used to develop general
guidelines for sediment production, transport, and deposition of low-
latitude coasts. Planned major products include a comprehensive atlas of
coastal hazards, journal articles and reports presenting results of our
studies, and a &quot;living&quot; database of shoreline history and changes based
on results of the beach profile monitoring and softcopy photogrammetric

Cross shore beach profiles were measured using a Geodimeter
464 total station and swimming rodman. The total station was
set up at a non-specific position on the beach. Up to five
permanent reference points were first surveyed in order to
establish the position of the station relative to the established
profile line. Beach profile measurements were then taken from
a point landward of the active beach to as far offshore as
conditions would allow (typically -4m water depth). Specific
morphologic features (high water, berm crest, top of beach toe,
etc.) were noted. Data were post-processed as follows Survey data
were downloaded from the Total Station memory, automatically
creating a RAW file and an associated JOB file. The RAW file
was used to generate a PTS file (UTM field coordinates are
extracted from the RAW file) Note: no recalculation is performed
on the original file). PFCODE.EXE was used on the JOB file to
generate an ED file. The ED file was edited to include necessary
Program 10 information, Points block listing, and INFO codes.
Field procedures were checked and corrected as necessary.
PFGD.EXE was used on the ED file to generate a PF file (Cartesian-
based, relative XYZ coordinates). Extraneous lines were removed
from the PF file to generate a DAT file (relative XYZ coordinates) DAT
files were compiled into a SUMMARY file (Excel) format, plotted,
and where necessary, corrected relative to a primary reference point.
Where GPS positions of the reference points were available, the entire
summary file was re-referenced to an absolute vertical elevation
(meters above the Local Hawaii Tidal datum).

Similar information is available for thousands of other USGS/CMG-related Activities.
If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <>
Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... <>
This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.).
  1. How should this data set be cited?

    U.S. Geological Survey (USGS) <>, Coastal and Marine Geology Program (CMGP) <>, 20131029, Geodetic data of field activity L-12-97-OA in Southeast Lanikai (1)Oahu, Hawaii from 07/30/1997 to 07/30/1997: U.S. Geological Survey (USGS) <>, Coastal and Marine Geology (CMG) <>, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -157.71168
    East_Bounding_Coordinate: -157.71168
    North_Bounding_Coordinate: 21.38828
    South_Bounding_Coordinate: 21.38828

  3. What does it look like?

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

    Beginning_Date: 30-Jul-1997
    Ending_Date: 30-Jul-1997
    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?

      Indirect_Spatial_Reference: Southeast Lanikai (1)
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point

    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 0.00001. Longitudes are given to the nearest 0.00001. 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.
      The flattening of the ellipsoid used is 1/298.257.

      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values

  7. How does the data set describe geographic features?

    Navigation with Time Stamp <>

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?

    U.S. Geological Survey (USGS) <>, Coastal and Marine Geology (CMG) <>
    Attn: Clint Steele <>
    InfoBank Group Leader <>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX) <>

Why was the data set created?

These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.

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: 23-Oct-2002 (process 1 of 1)
    Navigation Data Unknown

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <>, Coastal and Marine Geology (CMG) <>
    Attn: Clint Steele <>
    InfoBank Group Leader <>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX) <>

  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?

    Identified as best available version.

  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?

    Start and end date/times of data

    Navigation Data (l-12-97-oa.060 [GPS])
    199707300000000    199707300000000

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


How can someone get a copy of the data set?

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

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

    U.S. Geological Survey (USGS) <>, Coastal and Marine Geology (CMG) <>
    Attn: Clint Steele <>
    InfoBank Group Leader <>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX) <>

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

    Downloadable Data L-12-97-OA data set <>

  3. What legal disclaimers am I supposed to read?

    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
    Physical materials are under controlled on-site access.
    Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
    This information is not intended for navigational purposes.
    Any use of trade, firm, or product 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?

    • Availability in digital form:

Data format: ASCII Size: 0.1
Network links: <>

  • Cost to order the data: None

  • Who wrote the metadata?

    Last modified: 29-Oct-2013
    Metadata author:
    U.S. Geological Survey (USGS) <>, Coastal and Marine Geology (CMG) <>
    Attn: Clint Steele <>
    InfoBank Group Leader <>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX) <>

    Metadata standard:
    FGDC Content Standards for Digital Geospatial Metadata <> (FGDC-STD-001-1998 <>)

    Generated by mp version 2.9.13 on Tue Oct 29 12:50:27 2013