Sediment grain size and digital image calibration parameters from the mouth of the Columbia River, Oregon and Washington, 2014

Frequently anticipated questions:

• What does this data set describe?
  1. How might this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
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  1. How well have the observations been checked?
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What does this data set describe?

1. How might this data set be cited?
   Gelfenbaum, Guy R., Carlson, Emily M., Stevens, Andrew W., and Rubin, Dave M., 2017, Sediment grain size and digital image calibration parameters from the mouth of the Columbia River, Oregon and Washington, 2014: data release DOI:10.5066/F7K64G8V, U.S. Geological Survey, Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://doi.org/10.5066/F7K64G8V
   • https://www.sciencebase.gov/catalog/file/get/58990c3ee4b0efcedb707913?name=MCR14_Calibration_Images.zip

   This is part of the following larger work.
   Gelfenbaum, Guy R., Carlson, Emily M., Stevens, Andrew W., and Rubin, Dave M., 2017, Digital seafloor images and sediment grain size from the mouth of the Columbia River, Oregon and Washington, 2014: data release DOI:10.5066/F7K64G8V, U.S. Geological Survey, Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://doi.org/10.5066/F7K64G8V

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -124.06621
   East_Bounding_Coordinate: -123.92134
   North_Bounding_Coordinate: 46.25497
   South_Bounding_Coordinate: 46.21410
   

3. What does it look like?
4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 11-Sep-2014

   Ending_Date: 13-Sep-2014

   Currentness_Reference:

   ground condition at time data were collected

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: Vector Digital Data Set (Point)
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (63)
   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 1.0E-6. Longitudes are given to the nearest 1.0E-6. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is WGS1984.
      The ellipsoid used is WGS1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
      
7. How does the data set describe geographic features?

   Attribute Table

   Table containing attribute information associated with the dataset (Source: Producer defined)

   FAN ID

   Unique U.S. Geological Survey field activity identifier (Source: producer defined) Unique identifier for the U.S. Geological Survey field activity

   Sample ID

   Name of sample (Source: producer defined) Unique identifier for the sample used given in the field

   Lab ID

   Name of sample identifier in YY-FFFFF-XX format, where YY is the 2-digit year (for example 16=2016, 99=1999), FFFFF is the 5-digit field-activity-number (FAN) ID code, and XX is a sequential number given to the sample in the lab. NA=not applicable, because no sample was recovered. (Source: Producer defined) Unique identifier for the sample given during analysis in the lab

   Date Collected

   Date of sample collection in mm/dd/yyyy format (Source: producer defined)

   Range of values
   Minimum:	9/11/2014
   Maximum:	9/13/2014
   Units:	Dates in mm/dd/yyyy format

   Time (GMT)

   Time of sample collection in HH:MM:SS format relative to Greenwich Mean Time (GMT) (Source: producer defined)

   Range of values
   Minimum:	00:00:00
   Maximum:	23:59:59
   Units:	Times in HH:MM:SS format

   Latitude

   Latitude of sample in decimal degrees, north (Source: producer defined)

   Range of values
   Minimum:	46.21409559
   Maximum:	46.25496608
   Units:	decimal degrees

   Longitude

   Longitude of sample in decimal degrees, east (Source: producer defined)

   Range of values
   Minimum:	-124.0662084
   Maximum:	-123.9214313
   Units:	decimal degrees

   Sample Type

   Type of sample collected (Source: Produce defined)

   Value	Definition
   Grab	Sample collected with grab sampler from boat

   Corresponding Video

   Name of video taken of sample for use in calibration. (Source: producer defined) Unique identifier for the video file name created during the sampling

   Number of images

   Number of images grabbed off of video for use in calibration. (Source: producer defined)

   Range of values
   Minimum:	3
   Maximum:	10
   Units:	Count

   Wt. percent in -2.50 phi bin

   Weight percent of sample with grain diameter greater than -2.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -2.25 phi bin

   Weight percent of sample with grain diameter between -2.50 and -2.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -2.00 phi bin

   Weight percent of sample with grain diameter between -2.25 and -2.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -1.75 phi bin

   Weight percent of sample with grain diameter between -2.00 and -1.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -1.50 phi bin

   Weight percent of sample with grain diameter between -1.75 and -1.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -1.25 phi bin

   Weight percent of sample with grain diameter between -1.50 and -1.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -1.00 phi bin

   Weight percent of sample with grain diameter between -1.25 and -1.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -0.75 phi bin

   Weight percent of sample with grain diameter between -1.00 and -0.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -0.50 phi bin

   Weight percent of sample with grain diameter between -0.75 and -0.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in -0.25 phi bin

   Weight percent of sample with grain diameter between -0.50 and -0.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 0.00 phi bin

   Weight percent of sample with grain diameter between -0.25 and 0.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 0.25 phi bin

   Weight percent of sample with grain diameter between 0.00 and 0.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 0.50 phi bin

   Weight percent of sample with grain diameter between 0.25 and 0.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 0.75 phi bin

   Weight percent of sample with grain diameter between 0.50 and 0.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 1.00 phi bin

   Weight percent of sample with grain diameter between 0.75 and 1.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 1.25 phi bin

   Weight percent of sample with grain diameter between 1.00 and 1.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 1.50 phi bin

   Weight percent of sample with grain diameter between 1.25 and 1.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 1.75 phi bin

   Weight percent of sample with grain diameter between 1.50 and 1.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 2.00 phi bin

   Weight percent of sample with grain diameter between 1.75 and 2.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 2.25 phi bin

   Weight percent of sample with grain diameter between 2.00 and 2.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 2.50 phi bin

   Weight percent of sample with grain diameter between 2.25 and 2.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 2.75 phi bin

   Weight percent of sample with grain diameter between 2.50 and 2.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 3.00 phi bin

   Weight percent of sample with grain diameter between 2.75 and 3.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 3.25 phi bin

   Weight percent of sample with grain diameter between 3.00 and 3.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 3.50 phi bin

   Weight percent of sample with grain diameter between 3.25 and 3.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 3.75 phi bin

   Weight percent of sample with grain diameter between 3.50 and 3.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 4.00 phi bin

   Weight percent of sample with grain diameter between 3.75 and 4.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 4.25 phi bin

   Weight percent of sample with grain diameter between 4.00 and 4.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 4.50 phi bin

   Weight percent of sample with grain diameter between 4.25 and 4.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 4.75 phi bin

   Weight percent of sample with grain diameter between 4.50 and 4.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 5.00 phi bin

   Weight percent of sample with grain diameter between 4.75 and 5.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 5.25 phi bin

   Weight percent of sample with grain diameter between 5.00 and 5.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 5.50 phi bin

   Weight percent of sample with grain diameter between 5.25 and 5.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 5.75 phi bin

   Weight percent of sample with grain diameter between 5.50 and 5.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 6.00 phi bin

   Weight percent of sample with grain diameter between 5.75 and 6.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 6.25 phi bin

   Weight percent of sample with grain diameter between 6.00 and 6.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 6.50 phi bin

   Weight percent of sample with grain diameter between 6.25 and 6.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 6.75 phi bin

   Weight percent of sample with grain diameter between 6.50 and 6.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 7.00 phi bin

   Weight percent of sample with grain diameter between 6.75 and 7.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 7.25 phi bin

   Weight percent of sample with grain diameter between 7.00 and 7.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 7.50 phi bin

   Weight percent of sample with grain diameter between 7.25 and 7.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 7.75 phi bin

   Weight percent of sample with grain diameter between 7.50 and 7.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 8.00 phi bin

   Weight percent of sample with grain diameter between 7.75 and 8.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 8.25 phi bin

   Weight percent of sample with grain diameter between 8.00 and 8.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 8.50 phi bin

   Weight percent of sample with grain diameter between 8.25 and 8.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 8.75 phi bin

   Weight percent of sample with grain diameter between 8.50 and 8.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 9.00 phi bin

   Weight percent of sample with grain diameter between 8.75 and 9.00 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 9.25 phi bin

   Weight percent of sample with grain diameter between 9.00 and 9.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 9.50 phi bin

   Weight percent of sample with grain diameter between 9.25 and 9.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 9.75 phi bin

   Weight percent of sample with grain diameter between 9.50 and 9.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 9.99 phi bin

   Weight percent of sample with grain diameter between 9.75 and 9.99 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 10.25 phi bin

   Weight percent of sample with grain diameter between 9.99 and 10.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 10.50 phi bin

   Weight percent of sample with grain diameter between 10.25 and 10.50 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 10.75 phi bin

   Weight percent of sample with grain diameter between 10.50 and 10.75 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 10.99 phi bin

   Weight percent of sample with grain diameter between 10.75 and 10.99 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 11.25 phi bin

   Weight percent of sample with grain diameter between 10.99 and 11.25 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 11.48 phi bin

   Weight percent of sample with grain diameter between 11.25 and 11.48 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Wt. percent in 12.02 phi bin

   Weight percent of sample with grain diameter between 11.48 and 12.02 phi. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent Gravel

   percent of sample greater than 2 mm. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent Sand

   percent of sample less than 2 mm and greater than 63 microns. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent Silt

   percent of sample less than 63 microns and greater than 4 microns. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent Clay

   percent of sample less than 4 microns. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   D5 Phi

   Phi size at D5 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D10 Phi

   Phi size at D10 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D16 Phi

   Phi size at D16 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D25 Phi

   Phi size at D25 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D50 Phi

   Phi size at D50, or average particle diameter by mass, for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D75 Phi

   Phi size at D75 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D84 Phi

   Phi size at D84 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D90 Phi

   Phi size at D90 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   D95 Phi

   Phi size at D95 for sample. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-2
   Maximum:	13
   Units:	Phi size

   F-W Median

   Phi size median for sample by Folk and Ward (1957) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.575
   Maximum:	1.837
   Units:	Phi size

   F-W Mean

   Phi size mean for sample by Folk and Ward (1957) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.624
   Maximum:	1.843
   Units:	Phi size

   F-W Sorting

   sorting for sample by Folk and Ward (1957) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.454
   Maximum:	1.823
   Units:	Phi size

   F-W Skewness

   skewness for sample by Folk and Ward (1957) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-0.057
   Maximum:	1.227
   Units:	Phi size

   F-W Kurtosis

   Kurtosis for sample by Folk and Ward (1957) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.937
   Maximum:	1.227
   Units:	Phi size

   Inman Median

   Phi size median for sample by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.575
   Maximum:	1.837
   Units:	Phi size

   Inman Mean

   Phi size mean for sample by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.624
   Maximum:	1.845
   Units:	Phi size

   Inman Sorting

   sorting for sample by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.454
   Maximum:	0.812
   Units:	Phi size

   Inman Skew 16-84

   skewness for sample (D16-D84) by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-0.058
   Maximum:	0.131
   Units:	Phi size

   Inman Skew 05-95

   skewness for sample (D5-D95) by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	-0.093
   Maximum:	0.387
   Units:	Phi size

   Inman Kurtosis

   Kurtosis for sample by Inman (1952) method. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.583
   Maximum:	1.002
   Units:	Phi size

   Moment 1 Mean

   moment measure of mean. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.666
   Maximum:	1.891
   Units:	Phi size

   Moment 2 Variance

   moment measure of variance. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	0.460
   Maximum:	1.338
   Units:	Phi size

   Moment 3 Skewness

   moment measure of skewness. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	2.702
   Maximum:	5.020
   Units:	Phi size

   Moment 4 Kurtosis

   moment measure of kurtosis. NaN=not a number, because no sample was recovered. (Source: producer defined)

   Range of values
   Minimum:	21.089
   Maximum:	51.108
   Units:	Phi size

   Entity_and_Attribute_Overview:

   The entity and attribute information provided here describe the tabular data associated with the images in the dataset. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset.

   Entity_and_Attribute_Detail_Citation:

   The entity and attribute information was generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Guy R. Gelfenbaum
   • Emily M. Carlson
   • Andrew W. Stevens
   • Dave M. Rubin
2. Who also contributed to the data set?
3. To whom should users address questions about the data?
   U.S. Geological Survey, Pacific Coastal and Marine Science Center

   Attn: Andrew W. Stevens

   Oceanographer

   2885 Mission Street

   Santa Cruz, CA
   

   USA

   831-460-7540 (voice)

   astevens@usgs.gov

Why was the data set created?

The imagery was collected to aid in the collection of high spatial resolution grain size data over individual subaqueous bedforms.

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: 12-Jun-2015 (process 1 of 8)

   Video footage was converted from video type .MXF to a Red Hen System compatable format of .AVI using the software Acrok MXF Converter. All image and sound quality were maintained at the original video's quality.

   Date: 12-Jun-2015 (process 2 of 8)

   Video footage was indexed using Red Hen System's proprietary software IsWhere. An XML format metadata file was produced from each video and includes GPS information intermittently through the video of: latitude (decimal degrees), longitude (decimal degrees), GPS altitude (meters), video time (HH:mm:ss:ms), Dublin Julian Date in UTC (julian date = timeCode+2415020), course direction (degrees), speed (meters/second).

   Date: 12-Jun-2015 (process 3 of 8)

   Geotagged images were grabbed from the video every 0.5 second. From this set of evenly timed images, images were chosen when the sediment was in focus and the camera was resting on the bed. This process resulted in there being multiple images for each location. The image files contain the GPS location in lat/lon decimal degrees.

   Date: 12-Jun-2015 (process 4 of 8)

   Each image is named based on the video it was taken from, followed by the time stamp in the video. For example image "0205301_0_1_41_0" is from video 0205301 at time 00:01:41:00 (HH:mm:ss:msms).

   Date: 12-Jun-2015 (process 5 of 8)

   One to two images were chosen from each videoed location within each sediment sample. This resulted in 3 to 10 images corresponding with each sediment grab sample.

   Date: 12-Jun-2015 (process 6 of 8)

   Each image had its auto-correlation coefficient calculated for pixel offset values of 1 through 20. The resulting correlation curves were averaged together for images taken from the same sediment sample, and across sediment samples which were determined to have a difference in D50 less than 0.05 mm.

   Date: 12-Jun-2015 (process 7 of 8)

   The auto-correlation coefficient value at a pixel offset of 5 was extracted from each curve. These values were plotted against the Beckman Coulter laser diffraction determined D50. A least squares fit was applied to these data to obtain a calibration curve of auto-correlation offset with D50.

   Date: 19-Oct-2020 (process 8 of 8)

   Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: VeeAnn A. Cross

   Marine Geologist

   384 Woods Hole Road

   Woods Hole, MA
   

   508-548-8700 x2251 (voice)

   508-457-2310 (FAX)

   vatnipp@usgs.gov

3. What similar or related data should the user be aware of?
   Barnard, P.L., Rubin, D.M., Harney, J., and Mustin, N., 2007, Field test comparison of an auto-correlation technique for determining grain size using a digital 'beachball' camera versus traditional methods.

   Online Links:

   • http://dx.doi.org/10.1016/j.sedgeo.2007.05.016

   Gelfenbaum, G., Finlayson, D., Dartnell, P., Carlson, E., and Stevens, A., 2015, Bathymetry and backscatter from 2013 interferometric swath bathymetry systems survey of Columbia River Mouth, Oregon and Washington.

   Online Links:

   • http://dx.doi.org/10.5066/F7T72FHB

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?
   Accuracy of dataset attribute information was deduced to be good based both on visual examination of still images, video imagery, navigation trackline location on agreement with observer's field knowledge.
2. How accurate are the geographic locations?
   The positions of the data reflect the position of the GPS antenna on board the boat when data were collected and not the real location of the digital camera. Positional data in this report were not corrected for layback and thus represent only approximate locations.
3. How accurate are the heights or depths?
   A formal accuracy assessment of the vertical positional information in the dataset has either not been conducted, or is not applicable.
4. Where are the gaps in the data? What is missing?
   Data represent ground conditions of the mouth of the Columbia River only along individual tracklines where data were collected.
5. How consistent are the relationships among the observations, including topology?
   Data are logically accurate

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:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Use of appropriate byline/photo/image credit is requested; Suggested credit: Photo by USGS (or U.S. Geological Survey, depending on audience).

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey - Science Base

   Denver Federal Center, Building 810, Mail Stop 302

   Denver, CO
   

   888-275-8747 (voice)

   sciencebase@usgs.gov
2. What's the catalog number I need to order this data set? Digital seafloor images in JPEG format (MCR14_Calibration_Images.zip) and a table in comma-delimited format containing location and Beckman Coulter grain size distribution data (MCR14_Calibration_Grainsize.csv) are available for download, along with CSDGM FGDC-compliant metadata (MCR14_Calibration_metadata.xml)
3. What legal disclaimers am I supposed to read?

   Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Table containing grab sediment sample IDs, name of corresponding image name root, along with grain size distribution determined by the Beckman Coulter process. in format CSV (version Microsoft Excel 2010) Size: 14.31
     Network links:	https://www.sciencebase.gov/catalog/file/get/58990c3ee4b0efcedb707913?name=MCR14_Calibration_GrainSize.csv

     Data format:	Still-image frame grabs from sediment grab sample video footage. in format JPEG (version IsWhere - Red Hen Systems) JPEG Size: 1.73
     Network links:	https://www.sciencebase.gov/catalog/file/get/58990c3ee4b0efcedb707913?name=MCR14_Calibration_Images.zip https://doi.org/10.5066/F7K64G8V

   • Cost to order the data: No cost

5. What hardware or software do I need in order to use the data set?

   To utilize these data, the user must have software capable of uncompressing the zip file, viewing JPEG images, and reading spreadsheets.

Who wrote the metadata?

Dates:

Last modified: 19-Oct-2020

Metadata author:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: Andrew W. Stevens

Oceanographer

2885 Mission Street

Santa Cruz, CA

831-460-7540 (voice)

astevens@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)