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Net surface water-groundwater losses and gains may be estimated from flow gauges if they are adequately spaced such that flow differences are discernible. However, mapping of losses/gains on increasingly smaller scale river reaches is becoming important from the perspective of assessing non-point source pollution, ecological restoration efforts, an...
Citations
... The San Joaquin River is subject to significant agricultural run-off and is therefore characterized by high salinity levels, whereas the Merced River is protected by the National Wild and Scenic Act, resulting in less agricultural drainage and lower salinity levels. They also vary in their temperature and sediment content [13] . Characterizing these aquatic phenomena in the mixing region is an important application, and NIMS-RD has been employed for this purpose [8]. ...
In this paper, we present results from a field-test of NIMS-PL, a redundantly actuated cable-driven robot for aquatic applications. We describe installation procedures that enable rapid deployability and present results demonstrating precise calibration capabilities. Detection and correction of positional drift, which is critical for long-term autonomous deployments, is demonstrated, and the rate of system drift is quantified. An example actuated sensing experiment is performed that accurately maps the spatiotemporal variation of the intensity of light incident on a swimming pool. Finally, we propose an upcoming, environmentally significant deployment in which we will map variations in aquatic phenomena such as salinity and pH through the confluence region of two rivers.
