- Title:
-
Geodetic data of field activity L-61-97-OA in Northwest
Lanikai (6)Oahu, Hawaii from 02/02/1997 to 02/02/1997
- Abstract:
-
University of Hawaii,United States Geological Survey, Menlo
Park, California. Chief Scientist: Bruce Richmond. Geodetic
data (geodetic, navigation) of field activity L-61-97-OA in
Northwest Lanikai (6)Oahu, Hawaii from 02/02/1997 to
02/02/1997,
<http://walrus.wr.usgs.gov/infobank/l/l6197oa/html/l-61-97-oa.meta.html>.
- Supplemental_Information:
-
Equipment Used -
geodetic data directory exists
navigation data directory exists
Notes -
Other field activities at Northwest Lanikai (6)
on Oahu also have Activity IDs beginning with "L-6" and ending with "-OA"
<P>
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.
<P>
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.
<P>
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 "living" database of shoreline history and changes based
on results of the beach profile monitoring and softcopy photogrammetric
analysis.
<P>
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:
<http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Primary access to the USGS/CMG Information
Bank's digital data, analog data, and
metadata is provided through...
<http://walrus.wr.usgs.gov/infobank/>
This page accomodates a variety of search
approaches (e.g., by platform, by region,
by scientist, by equipment type, etc.).
- How should this data set be cited?
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG), 20081216, Geodetic data of field activity L-61-97-OA in Northwest Lanikai (6)Oahu, Hawaii from 02/02/1997 to 02/02/1997: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG).
Online Links:
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -157.71674
- East_Bounding_Coordinate: -157.71674
- North_Bounding_Coordinate: 21.39204
- South_Bounding_Coordinate: 21.39204
- What does it look like?
- <http://walrus.wr.usgs.gov/infobank/l/l6197oa/html/l-61-97-oa.nav.gif> (GIF)
-
Trackline map of L-61-97-OA
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 02-Feb-1997
- Ending_Date: 02-Feb-1997
- Currentness_Reference: ground condition
- What is the general form of this data set?
- How does the data set represent geographic features?
- How are geographic features stored in the data set?
- Indirect_Spatial_Reference: Northwest Lanikai (6)
This is a Point data set.
It contains the following vector data types (SDTS terminology):
- 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.
- Vertical_Coordinate_System_Definition:
-
- Depth_System_Definition:
-
- Depth_Datum_Name: Local surface
- Depth_Resolution: 0.1
- Depth_Distance_Units: meters
- Depth_Encoding_Method: Attribute values
- How does the data set describe geographic features?
- Entity_and_Attribute_Overview: Navigation with Time Stamp
- Entity_and_Attribute_Detail_Citation:
-
Global positioning system (GPS) data
Mnemonic: (Year, Day, Hour, Min, Sec, Tenths, Latitude, Longitude)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f9.5, t26, f10.5)
C format: (%4.4i%3.3i3%2.2i%1.1i %9.5f %10.5f\\n)
Naming: .060
- Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
- Who also contributed to the data set?
- To whom should users address questions about the data?
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov
These data and information are intended for science
researchers, students from elementary through
college, policy makers, and general public.
- From what previous works were the data drawn?
- 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)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov
- What similar or related data should the user be aware of?
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG), Unknown, USGS/CMG Information Bank: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG).
Online Links:
- Other_Citation_Details: Updated daily
- How well have the observations been checked?
Identified as best available version.
- How accurate are the geographic locations?
Unspecified
- How accurate are the heights or depths?
Unspecified
- Where are the gaps in the data? What is missing?
Start and end date/times of data
Navigation Data (l-61-97-oa.060 [GPS])
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
199702020000000 199702020000000
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
- How consistent are the relationships among the observations, including topology?
Unspecified
Are there legal restrictions on access or use of the data?
- Access_Constraints:
-
Physical materials are under controlled on-site access.
If available, access to physical samples is described
in the "WR CMG Sample Distribution Policy" at:
<http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
- Use_Constraints:
-
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.
- Who distributes the data set? (Distributor 1 of 1)
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov
- What's the catalog number I need to order this data set?
Downloadable Data L-61-97-OA data set
- 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.
- How can I download or order the data?
- Availability in digital form:
- Cost to order the data: None
- Dates:
- Last modified: 16-Dec-2008
- Metadata author:
-
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov
- Metadata standard:
- FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.9.2 on Tue Dec 16 03:32:56 2008
|