A5021620041- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Meteorological Phenomena and Simulations
- Fluid Dynamics and Turbulent Flows
- Winter Sports Injuries and Performance
- Climate variability and models
- Geophysics and Gravity Measurements
- Geomagnetism and Paleomagnetism Studies
- Polar Research and Ecology
Oregon State University
2024-2025
Université d'Orléans
2020
The influence of submarine ice shape on the melt rates tidewater glacier termini is relatively unexplored and unconstrained. Observations morphology have primarily relied crewed platforms equipped with multibeam sonar, which can measure large-scale (O > 25 meters) estimate bulk rates. However, detailed at spatial temporal scales potentially relevant to ambient melting remains unknown. Here, we present direct observations water column temperature, salinity, velocity, collected using a...
We present the first direct observations of submarine melt rate and boundary layer characteristics made from an instrumentation platform mounted underwater into terminus Xeitl Sit’ (LeConte Glacier) in southeast Alaska. The platform, called a Meltstake, is remotely deployed robotic that drills near-vertical ice face, allowing for prolonged stationary measurements ice’s reference frame. Three deployments Meltstakes were completed at 20 m, 45 50 m depths, with each...
Horizontal convection at large Rayleigh and Prandtl numbers is studied experimentally in a regime up to seven orders of magnitude larger terms than previously achieved. To reach $10^{17}$ , the horizontal density gradient generated using differential solutal by input salt fresh water controlled diffusion novel experiment which zero-net mass flux ensured through permeable membranes. This set-up allows us accurately measure Nusselt number carefully controlling amount exchanged Combined...
At marine-terminating glaciers, the interplay between meltwater buoyancy and local currents control turbulent exchanges. Because of challenges in making centimeter-scale measurements at dynamics near-vertical ice-ocean boundaries are poorly constrained. Here we present first observations from instruments robotically-bolted to an underwater ice face, use these elucidate tug-of-war meltwater-derived externally-forced controlling boundary-layer dynamics. Our captured two limiting cases flow....
Abstract At marine‐terminating glaciers, both buoyant plumes and local currents energize turbulent exchanges that control ice melt. Because of challenges in making centimeter‐scale measurements at these dynamics near‐vertical ice‐ocean boundaries are poorly constrained. Here we present the first observations from instruments robotically bolted to an underwater face, use elucidate interplay between buoyancy externally forced meltwater plumes. Our captured two limiting cases flow. When...
Horizontal Convection (HC) at large Rayleigh and Prandtl numbers, is studied experimentally in a regime up to seven orders of magnitude larger terms numbers than previously achieved. To reach $10^{17}$, the horizontal density gradient generated using differential solutal convection by input salt fresh water controlled diffusion novel experiment where zero-net mass flux ensured through permeable membranes. This setup allows for measuring accurately Nusselt number carefully controlling amount...