Navigation Links
Underwater gliders may change how scientists track fish
Date:6/22/2010

Fairbanks, AlaskaTracking fish across Alaska's vast continental shelves can present a challenge to any scientist studying Alaska's seas. Researchers at the University of Alaska Fairbanks have successfully tested a possible solution in the form of underwater gliders.

Last month, Peter Winsor, associate professor of physical oceanography, and Andrew Seitz, assistant professor of fisheries, tested the use of autonomous underwater vehicles, called gliders, for tracking tagged fish. Winsor and Seitz suspended acoustic tags, usually implanted in fish, at different depths along a buoy line near Juneau. They then deployed two gliders fitted with an acoustic listening device to "hear" the signals from the tags.

Winsor and Seitz say these are the first gliders to be deployed in Alaska with an acoustic monitoring device to track tagged fish.

Each glider is about five feet long and flies like an airplane through the water in an up-and-down motion. They are propelled using an internal bladder that works much like a fish's swim bladder. When the bladder expands, the glider moves toward the surface. When it contracts, it moves toward the seafloor.

"They convert changes in water depth into forward movement," said Seitz.

The gliders move at a speed of nearly one mile per hour and can operate for up to three months. According to Winsor, the gliders can cover thousands of miles of ocean. At the surface, the glider transmits data, including its location and oceanographic readings, directly to scientists.

"With the gliders, we not only learn about where the fish go, but we can also measure the physical, chemical and biological environment of the ocean at the same time," said Winsor.

Traditional methods of tracking tagged fish include using a ship equipped with an acoustic listening device, or by using what scientists call a "listening line," which is a series of hydrophones attached to the seafloor.

"The problem with using hydrophones is that they stay in one place and the tagged fish have to move near enough to the hydrophones to be detected," said Seitz. "This can create big geographic gaps in your data, especially in the vast oceans surrounding Alaska."

Seitz and Winsor say that the gliders can be programmed to follow tagged fish. The technology is ideal for Alaska waters because the gliders can cover large distances and are much less expensive than using a ship or sets of hydrophones. Scientists are planning to use the gliders to gather oceanographic information in the Chukchi Sea.


'/>"/>

Contact: Carin Stephens
cbstephens@alaska.edu
907-322-8730
University of Alaska Fairbanks
Source:Eurekalert  

Related biology news :

1. Unveiling the underwater ways of the white shark
2. Underwater microscope helps prevent shellfish poisoning along Gulf Coast of Texas
3. School of Robofish provides basis for underwater robot teams
4. NJIT professors research suggests changes in underwater data communications
5. Little Salt Spring underwater archeological site in Florida receives new funding
6. An underwater drugstore?
7. Toward cheap underwater sensor nets
8. Scientists report first remote, underwater detection of harmful algae, toxins
9. MBARI sends underwater robot to study Deepwater Horizon spill
10. IEEE touts NJIT professor for expertise in underwater acoustic communication
11. Climate change goes underground
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Underwater gliders may change how scientists track fish
(Date:3/22/2017)... March 21, 2017   Neurotechnology , a ... technologies, today announced the release of the ... provides improved facial recognition using up to 10 ... single computer. The new version uses deep neural-network-based ... and it utilizes a Graphing Processing Unit (GPU) ...
(Date:3/22/2017)... -- Vigilant Solutions , a vehicle location and ... today the appointment of retired FBI special agent ... development. Mr. Sheridan brings more than 21 ... on the aviation transportation sector, to his new role ... served as the Aviation Liaison Agent Coordinator (ALAC) in ...
(Date:3/20/2017)... March 20, 2017 PMD Healthcare announces the ... and Wellness Management System (WMS), a remote, real-time lung ... 2010, PMD Healthcare is a Medical Device, Digital Health, ... dedicated to creating innovative solutions that empower people to ... intent focus, PMD developed the first ever personal spirometer, ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... 24, 2017 (PRWEB) , ... May 24, 2017 ... ... , Medical systems are increasingly being developed with Wi-Fi connectivity to reduce the ... moved from room to room. In addition, compact mobile devices including infusion pumps, ...
(Date:5/23/2017)... Colorado (PRWEB) , ... May 23, 2017 , ... A ... as the most troublesome and difficult to control weed in 12 categories of broadleaf ... , Almost 200 weed scientists across the U.S. and Canada participated in the 2016 ...
(Date:5/23/2017)... (PRWEB) , ... May 22, 2017 , ... ... year in a row in the Aragon Research Globe™ for Corporate Learning, 2017. ... with industry direction and market demand, and effectively perform against those strategies. NetDimensions’ ...
(Date:5/23/2017)... ... 23, 2017 , ... Energetiq Technology, a world leader in ... to accommodate its rapid growth. , The renovations at the company’s headquarters in ... existing areas. The expansion includes, a state-of-the-art engineering facility, and a second clean ...
Breaking Biology Technology: