Cathrine Hancock

Area of research

Oceanography · Atmospheric Science

Research interest

Research topics from publications: Predicting the response of the deep-ocean microbiome to geochemical perturbations by hydrothermal vents; Acoustic Float Tracking with the Kalman Smoother; Extreme temperature fluctuations in laboratory models of the mid-latitude atmospheric circulation; Under Ice‐Shelf Eddy at the Stancomb‐Wills Ice Tongue; Improved Acoustic Tracking of RAFOS-Enabled Profiling Floats through the New Software Package artoa4argo; Bubble-Induced Cave Collapse; Dispersion of subsurface lagrangian drifters in the northeastern Gulf of Mexico; The effects of meridional temperature contrast on local temperature fluctuations in the mid-latitude atmosphere: a laboratory experiment. Representative work: Submarine hydrothermal vents perturb the deep-ocean microbiome by injecting reduced chemical species into the water column that act as an energy source for chemosynthetic organisms. These systems thus provide excellent natural laboratories for studying the response of microbial communities to shifts in marine geochemistry. The present study explores the processes that regulate coupled microbial-geochemical dynamics in hydrothermal plumes by means of a novel mathematical model, which combines thermodynamics, growth and reaction kinetics, and transport processes derived from a fluid dynamics model. Simulations of a plume located in the ABE vent field of the Lau basin were able to reproduce met Abstract Acoustically-tracked subsurface floats provide insights into ocean complexity and were first deployed over 60 years ago. A standard tracking method uses a Least-Squares algorithm to estimate float trajectories based on acoustic ranging from moored sound sources. However, infrequent or imperfect data challenge such estimates, and Least-Squares algorithms are vulnerable to non-Gaussian errors. Acoustic tracking is currently the only feasible strategy for recovering float positions in the sea ice region, a focus of this study. Acoustic records recovered from under-ice floats frequently lack continuous sound source coverage. This is because environmental factors such as surface sound ch