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This portion of the data release provides the data used to develop the calibration equation for the images in Digital seafloor images and sediment grain size from the mouth of the Columbia River, Oregon and Washington, 2014 for the estimate of median grain size. This dataset includes 63 still images extracted from digital video imagery of sediment grab samples along with laboratory grain size analysis of the sediment grab samples taken from the mouth of the Columbia River, OR and WA, USA. Still images were extracted from video footage whenever the camera was resting on the sediment sample and individual sediment grains were visible and in focus. The images were used to calculate the calibration curve through auto-correlation...


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