Vegetated delta experiments with high discharge

Files in this dataset are from a set of two experiments designed to investigate the co-evolution of vegetation and a delta channel network. There is one unvegetated experiment (Run 1) and one vegetated experiment (Run 2). Both experiments were conducted with a sediment mixture of 70% sand and 30% silt, and alfalfa was used for vegetation, which was distributed manually through the air. Both experiments began with a period of flood discharge to grow a sizable delta deposit, after which discharge fluctuated between a flood and interflood. Interfloods had half of the flood water discharge and no sediment input. Seeding in Run 2 occurred between the flood and interflood, such that interflood channels could rework the delta surface to remove some seeds. Plants were allowed to grow for three days with only groundwater input before the next flood cycle began. Additional details of experimental methods can be found in a paper currently in review in GRL, the citation for which will be added following publication. Experiments in the paper named High Q-np and High Q-p refer to Run 1 and Run 2, respectively. Experiments in this dataset have an order of magnitude larger water discharge than our other vegetated delta datasets, also available in SEAD. Time lapse images were collected during both floods and interfloods every 15 seconds. This dataset includes several image image types for each experiment: (1) raw unprocessed time lapse photos for all floods and interfloods; (2) binary masks of delta topsets; (3) binary masks of wetted area; and (4) binary masks of vegetation cover, only for experiments that had vegetation. The time lapse images are the original photos taken during the experiments (every 15 seconds) and have not been resized, scaled, or corrected for lens distortion. Time lapse photos were rescaled to 2 mm per pixel, corrected for lens distortion, and cropped to make the various binary masks. All binary images are therefore at a resolution of 2 mm per pixel. Time lapse images were then manually masked to the shoreline and thresholded to make the topset binary images. Other binary images were made in photoshop by thresholding the color intensities for the red (wetted area) or green (vegetation) channel. Note that 'wetted area' images capture the channelized area, but because of low dye intensity in these experiments, some areas with thin sheet flow may not have been detected as red during thresholding and therefore may not appear in the binary mask.