[Home]   [Full version]  

Sonar reference dropped from whale report

Jan 20 ,General Science


A document made public as a result of a court order says a U.S. government investigator studying the stranding of whales dropped references of naval sonar.

The New York-based environmental group Natural Resources Defense Council had sued the National Marine Fisheries Service over its refusal to release information on 37 whales stranded on North Carolina's Outer Banks, The Washington Post reported Friday.

Investigator Teri Rowles, coordinator of the National Marine Fisheries Service's stranding response program, described in her preliminary report that injuries to seven of the whales "may be indicative" of damage related to the loud blasts of sound from active sonar.

The April 2005 preliminary report also said one of the injuries -- air bubbles in the liver of a pilot whale -- had been reported in mass strandings in the Bahamas and Canary Islands associated with sonar activity.

A later report by Rowles and others did not mention sonar and in a cover letter officials said the initial draft that mentioned sonar "contains early information that was later found to be inaccurate."

Copyright 2006 by United Press International

Related stories:

Navy sonar blamed for whale stranding
Experts say U.S. Navy sonar may have caused the stranding of 200 deep-diving melon-headed whales in a Hawaiian bay in 2004, but the Navy won't take the blame.
Briefs: No conclusion in whale stranding study
The National Marine Fisheries Service says it cannot determine if Navy sonar caused 36 whales to become stranded on the North Carolina shore last year.
Thirty false killer whales beached in Thailand; most saved
Thirty false killer whales swam ashore on a beach near the Thai resort isle of Phuket, but local residents and hotel staff saved all but one of them, a marine official said Friday.
School of Robofish provides basis for underwater robot teams
In the world of underwater robots, this is a team of pioneers. While most ocean robots require periodic communication with scientist or satellite intermediaries to share information, these can work cooperatively communicating only with each other.
Probing question: Why do whales beach themselves?
Whales are the largest marine mammals in the world — the smallest species weigh in at several tons. When whales beach themselves, they can die simply from the crushing weight of their own bodies or from overheating due to their blubber, which is needed for insulation in cold ocean waters. What causes these often fatal incidents?
How is that whale listening?
Researchers from San Diego State University and the University of California have been using computer models to mimic the effects of underwater noise on an unusual whale species and have discovered a new pathway for sound entering the head and ears.
Squeezed crystals deliver more volts per jolt
A discovery by scientists at the Carnegie Institution has opened the door to a new generation of piezoelectric materials that can convert mechanical strain into electricity and vice versa, potentially cutting costs and boosting performance in myriad applications ranging from medical diagnostics to green energy technologies.
'Invisibility cloaks' could break sound barriers
Contrary to earlier predictions, Duke University engineers have found that a three-dimensional sound cloak is possible, at least in theory.

News discussion:

General Science news

[Home]   [Full version]