Time Series Measurements from a Moored Fluorescence-Based Dissolved Oxygen Sensor

Abstract

We present an analysis of time-series measurements from a prototype fluorescence-quenching dissolved oxygen sensor moored for a six-day period in late March 1987 at 100 m depth in Saanich Inlet, British Columbia. Temporal variations in dissolved oxygen are shown to be consistent with concomitant variations in water properties obtained from a moored Aanderra RCM4 current meter and daily vertical profiles. Results suggest that fluorescence-based instrumentation have sufficient resolution and stability for a variety of mooring and profiling applications involving the measurement of dissolved oxygen concentration.