Distribution of erosion rates in a subglacial channel before and after a confluence with another channel.

• Main Authors: Sergio Fagherazzi (6658952), Luca Baticci (11414144), Christine M. Brandon (11414147), Maria Cristina Rulli (6574757)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Biochemistry; Neuroscience; Ecology; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; numerical model based; mcmurdo dry valleys; wright upper glacier; saltating bed load; model results show; pressurized flow reaches; sediment particles cannot; sediment grain sizes; sediment load; recent results; subglacial flow; flow accelerates; sediment loads; xlink ">; wide range; transport rate; transport capacity; therefore conclude; subglacial channels; section constrictions; reducing abrasion; potential cross; possible signature; monotonic relationship; intermediate distance; glacier snout; glacial scour; geomorphic features; develop herein; complex interplay; classical theory; channel confluences; channel bottom; bottom profiles; McMurdo Dry Valleys; Wright Upper Glacier
• Online Access: https://doi.org/10.1371/journal.pone.0253768.g009

The dashed line is the erosion rate with the initial discharge and sediment load of the main channel, the black arrow is the location where the secondary channel discharges water and sediments, dotted line is the erosion rate with the final sediment discharge and sediment load (sum of the contribution of the two channels), the red line is the distribution of erosion rate before and after the confluence. In A) and B) the secondary channel is adding only water in the main channel while in C) and D) it is also adding sediment load. In A) and C) the erosion rate is higher after the confluence while in B) and D) it is lower.