Near-surface and near-bottom current meters and a near-bottom oxygen meter have been deployed at a single location in 20-m water depth since 1989 (C6A or C6B). Instrumentation was expanded in 1995 to include near-surface and mid-water oxygen meters, additional conductivity/temperature sensors in the vertical water column, and shorter deployments of nutrient and light meters.
These instruments are designed to collect continuous time-series data at a particular depth. Parameters measured by our instruments include dissolved oxygen, conductivity, temperature, currents, nutrients, and turbidity. LUMCON scuba divers maintain these instruments.