GEOL107 Lecture Notes - Lecture 10: Suspended Load, Laminar Flow, Oxbow Lake
27 Sep 2018
School
Department
Course
Professor
Document Summary
Plot of elevation of river from head (source) to mouth (end) Change in elevation as function of distance from head (source) to mouth (end of a river) = (elevation 1 - elevation 2) divided by (horizontal distance between 1 and. Amount of water flowing past given point in given amount of time. Higher (steeper) the gradient = faster river/stream velocity. Since gradient decreases downstream impact on velocity is to decrease. Higher the discharge = faster river/stream velocity. Since discharge increases from head to mouth impact on velocity is to increase. Factors (gradient decreasing, discharge increasing) compete in terms of impact on velocity from head to mouth. Near head high (steep) gradient is more important factor. Near mouth high discharge is more important factor. Competence is maximum grain size that transport agent (water) can carry (as suspended load) Higher the velocity = higher the competence rivers/streams carry weathered rock material in 3 major ways:
