Dataset: Velocity, oxygen, and pH measurements over a mussel bed in water flume at Friday Harbor Labs, Washington in July 2023

Velocity measurements were conducted with a Nortek Vectrino Velocimeter. Oxygen and pH measurements were collected using a Pyroscience fiber optic sensor. Raw velocity data is provided in associated files with a sampling rate of 50 Hz. The length of each velocity record varies, but typically is between 5,000 and 10,000 samples. At a location 0.5 cm away from velocity sampling, oxygen and pH was sampled at a 1 Hz sampling rate. Only min, mean, and max oxygen and pH are provided. The mussel bed was approximately 10 cm high, so measurements taken at elevations between 1 and 10 cm were within the bed, and measurements at or above 11 cm were above the bed.

 

The data is used to compute both mean velocity measurements and turbulence statistics and relate mixing and water exchange rates to overall oxygen and pH dynamics within and above the mussel bed.