Our recent paper on ice melting is "Unusually Loud Ambient Noise in Tidewater Glacier Fjords: A Signal of Ice Melt"
Click at right to watch the movies of bubbles escaping the ice!
The ice-ocean boundary is a critical piece of the puzzle of future glacier change - yet it is challenging to study due to the dangers involved. Calving, ice-shelf disintegration, fjord and sub-ice shelf circulation, and upstream ice dynamics are all linked to ocean and atmospheric processes. These projects are by necessity interdisciplinary, we work with oceanographers, marine geologists, marine biologists, and atmospheric scientists. Our favorite tools of the moment include "listening" to the ice using seismics and underwater acoustics. Observing motion using GPS and time-lapse photography. Imaging the interior of ice shelves using ground-penetrating radar. And others.
What is the link between warm ocean currents and ice shelf disintegration?
Under what conditions can surface melt from warm winds cause ice shelf instability?
What is the variability in subglacial discharge? How does subglacial discharge affect ice dynamics?
Does glacier sliding make sound we can hear in the water?
Collaborators on various Underwater Acoustics Projects
Dr. Jeff Nystuen, University of Washington
Dr. Shad O'Neel, U.S. Geological Survey
Dr. Preston Wilson, University of Texas
Dr. Dave Sutherland, University of Oregon
Dr. Emily Shroyer and Dr. Jonathan Nash, Oregon State University
National Science Foundation