RESEARCH IN THE MACKENZIE RIVER DELTA

LAKE CH4 BIOGEOCHEMISTRY & HYDRODYNAMICS

In summer 2022 I deployed our first set of hydrodynamic and biogeochemistry sampling packages in Lake 520 in the Mackenzie Delta. L520 is thermokarst and deeper than most lakes in the Delta, at around 4.8 m at its deepest location. I deployed thermistor arrays of high resolution temperature, conductivity, dissolved oxygen (DO), and light (PAR) sensors. These thermistors were deployed over various depths and will be collected follow ice-out in spring/summer 2023. 

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Additional discrete samples were taken of water column methane, DO, conductivity, and temperature, showing a clear thermocline and anoxic conditions at depth in L520, a lake previously assumed to fully mix in the summer.