Ballard, Ronald L. , 1964, Distribution of beach sediment near the Columbia River: Technical Report No. 98, University of Washington, Seattle, WA.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00028. Longitudes are given to the nearest 0.00028. Latitude and longitude values are specified in Decimal degrees.
Alpha numeric number based on cruise, site, sampler, and downcore depth information
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Maximum: | 34.54 |
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Minimum: | 0.39 |
Maximum: | 3.18 |
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Minimum: | 0.16 |
Maximum: | 2.22 |
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Minimum: | -0.63 |
Maximum: | 0.48 |
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Maximum: | 81.7 |
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Maximum: | 49 |
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Ronald L. Ballard at the University of Washington for the collection and analysis of data. For inclusion into usSEABED: digitization: Jennifer Mendonca (USGS); Formatting corrections: Jane Reid (USGS); and Chris Jenkins (University of Colorado).
206-543-5060 (voice)
"The objectives of this report are to describe the sediments of the ocean beaches in the vicinity of the Columbia River and to determine the relationships among the regional topography, the processes active in the beach zone, and the properties of the sediments."
Person who carried out this activity:
206-543-5060 (voice)
Data sources produced in this process:
No estimate made for the accuracy of the data in the original report. Data digitized by the USGS and partners were visually compared to the source data, and corrected. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.
Navigational technique not given. Latitudes and longitudes given in degrees, tenths, minutes.
Water depth determination technique not given. Water depths given in feet or physiographic location ("trough").
Data digitized include (table 1): locations, granulometric analyses (gravel, sand, silt), Inman statistics; (table 5): relative frequencies of heavy mineral and magnetic mineral (percent) in the 3 to 3.5 phi class from selected cores; (table 6): relative percent of selected heavy minerals [in the 3 to 3.5 phi class]. Not digitized are table 2: averaged mean grainsize values for various beaches; table 3: sorting values for the various beach zones; table 4: skewness values for the various beach zones; table 7: relative frequency of waves with given steepness values from various directions; and table 8: longshore components of wave energy flux.
Data fall within normal ranges for the given parameters.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- Report is available at libraries and the University of Washington
- Use_Constraints:
- Cite Ronald L. Ballard and the University of Washington as originators of the data.
206-543-5060 (voice)
University of Washington Department of Oceanography Technical Report 98
Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.
Report is available at libraries and the University of Washington.
None
831-427-4727 (voice)
jareid@usgs.gov