This protocol provides instructions on how to use a self-contained underwater velocimetry apparatus (SCUVA), which is designed for quantification of in situ animal-generated flows. In addition, this protocol addresses challenges posed by field conditions, and includes operator motion, predicting position of animals, and orientation of SCUVA.
Total time
~4–6 hours per deployment (field-dependent)
Steps
1
Prepare SCUVA before water immersion
Assemble and calibrate the self-contained underwater velocimetry apparatus, ensuring sensors and data logging are functional and properly oriented for field deployment.
▶ 01:47
2
Detect in situ flows during immersion
Position SCUVA to detect animal-generated water movements, manage operator motion to minimize interference, and predict animal position for optimal measurement capture.
▶ 03:56
3
Treat equipment and process collected data
Remove SCUVA from water, perform post-immersion treatment, and download and process velocimetry data to remove artifacts from operator motion.
▶ 05:57
4
Quantitatively measure and analyze in situ flows
Analyze processed velocimetry data to extract quantitative flow parameters and correlate measurements with observed animal behavior.
▶ 07:17