acoustic

New seafloor lander tested and in action

Hans-glacier
The ice edge of Hans Glacier in Hornsund fjord, Svalbard

By Elizabeth Weidner.

Over the past year, the Broadband Acoustics Lab, led by DMS Assistant Professor Elizabeth Weidner, designed and built a new kind of seafloor lander to investigate how melting glaciers are transforming the coastal Arctic ocean.

The custom-built instrument houses several advanced sonar systems that use sound to observe processes that are otherwise difficult to capture in remote, ice-covered environments.

The lander was developed, assembled, and tested at the University of Connecticut, in close collaboration with Professor Tom Blanford from the University of New Hampshire. A new DMS graduate student, Cloé Mueller, who joined the lab in the fall, played a key role in system testing and preparation.

Lander
The seafloor lander on board the RV Connecticut for testing in Long Island sound

The lander will be deployed this summer in Svalbard near a marine-terminating glacier, where it will collect long-term acoustic measurements. These data will help the Broadband Acoustics Lab better understand how melting glaciers influence ocean structure, underwater sound propagation, and the rapidly changing Arctic environment.

LizWeidnerBlanfordLander
Members of the broadband acoustics lab testing the lander deployment with the Jere A Chase engineering team at the University of New Hampshire (left to right: Elizabeth Weidner, Cloé Mueller, Thomas Blanford)