Articles related to "Sonar"



Is Navy Sonar Killing Whales and Dolphins?
More often than not, when a whale or dolphin beaches itself, scientists look at sonar as a possible cause. Is sonar responsible for substantial cetacean deaths?
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Eight Whales Die, Scientists Blame Navy
Eight whales beached and died earlier this month, just hours after the U.S. Navy conducted anti-submarine exercises off the northern Bahamas, prompting an investigation and calls for an end to such exercises.
navy whales bahamas emu sonar tests

First Overfishing. Now Noise. How much can oceans take?
oceans, ocean noise, marine mammals, Acoustic Thermometry
oceans ocean noise marine mammals acoustic thermometry

Navy, Environmentalists Strike Deal on Sonar Tests
In a move deemed to be a temporary end to the controversy over Low Frequency Acoustical (LFA) sonar testing and its impact on whales, the U.S. Navy announced this month that it will limit the peacetime use of the sonar.
lfa sonar navy whales

Causes Galore Seek Supporters
A guide to the latest action alerts issued by environmentally focused groups working for positive change.
nuclear weapons sonar whales water arctic national wildlife refuge

Dolphin Conservation
International cooperation is necessary to save whales.
whale-watching overfishing pollution sonar mediterranean dolphin populations

Whale Echo-location and Song
Some of the loudest animal noises are used by whales to find food and to keep in touch over long distances.
whale song echo-location sonar communication courtship

Whales May Suffer From Decompression Sickness
Changes in dive patterns in response to naval exercises may cause the bends in beaked whales. Understanding why these marine mammals react to sonar may reduce losses.
beaked whale mass strandings navy sonar testing decompression sickness ocean noise the bends

Underwater Noise Revisited
Navy tests of the effects of underwater noise on on marine species have created controversy among some environmentalists. This article reviews the comments of a physicist who questions the accuracy of the Navy's reports.
underwater noise marine animals whales

Report on the Health of the World's Oceans (5)
A wrap-up of the second major problem facing the world's oceans -- pollution.
pollution ocean resources conservation

U-Boat Menace Ended by Technology
Since 1939 Karl Donitz's U-Boats had been the terror of the seven seas but innovative new technology would end "The Sea Wolves" reign of destruction.
u-boats karl donitz winston churchill sea wolves resonate cavity magnetron

USS Permit (SSN-594) Class
First launched in 1960, the SSN-594 Permit class were the world's first modern, quiet, deep-diving fast attack submarines.
uss permit class submarine design s5w reactor hy-80 uss thresher

Echolocation in Whales and Dolphins
Most people have heard CDs filled with whale sounds or songs. While it is a unique and relaxing sound, these chirps and clicks mean a lot more to whales than relaxation.
what is echolocation? how echolocation works echolocation in whales and dolphins how marine mammals communicate how dolphins navigate underwater

The Search for Nessie
Is the Loch Ness monster a type of plesiosaur?
suite 101 paranormal jodee redmond loch ness nessie

Unusual Whale Sightings in British Waters
Whales face many man-made problems.
blue whales in irish waters humpback whales in the english channel fin whales around the british coast man-made problems whales face shipping lanes and ships colliding with whales

Marine Debris Mapping in Louisiana
The 2005 storm season left huge amounts of wreckage behind for waterfront residents living along the Gulf of Mexico that is hazardous to navigation and wildlife.
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Mystic Medicine
Traditional medicine has a new partner, "alternative" medical practices. Dolphin Assisted Therapy, known as DAT, has given new hope to patients who felt that they would have to accept their conditions as part of their lives.
alternative medicine autism depression lymphoma cancer

The Loch Ness Exhibition at Drumnadrochit
The Loch Ness monster story draws thousands of tourists to the Loch Ness Centre at Drumnadrochit every year, but what does the exhibition consist of and is it good value?
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Using Sydney Scandal in Elementary Enrichment
Judy Katschke's tween surfer's adventures present a great teachable moment about environmental noise and how it impacts the world that gifted students live in and around.
sydney scandal in elementary enrichment noise pollution environmental concern teacher summary of sydney scandal introducing sound as a vibration sound ron brown

Amazon Pink River Dolphin
Pink River Dolphins are playful and slow swimming fish are the best known of the five species of river dolphins.
amazon pink river dolphin amazon pink river dolphin also called boto boto found from peru columbia south america endangered species list since 2002 chinese species called baiji declared extinct in 2

The Raising of the Mary Rose
The excavation, recovery and conservation of the Mary Rose used and developed many innovative marine archaeology techniques.
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Underwater Archaeology
Adapting terrestrial methods, underwater archaeology allows the retrieval of clues to the past not always preserved on land.
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Web sites to surf
Web sites to surf

Mass strandings pound the Mass. coast
Nearly 50 Atlantic Whitesided dolphins washed up along Cape Cod beaches last week in one of the largest strandings this year. Of the bunch, 44 animals died.
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TOO MUCH TECH?
How to Fish for less money.
fishing gear equipment tackle budget.

Fossil Bat Flew While Deaf
A well-preserved fossil of a previously unknown species of bat has resolved an evolutionary conundrum - could bats fly before they could echo-locate their insect prey?
bat echolocation debate resolved 52 million-year-old fossil bat fossil bat flew while deaf bat could fly but not echolocate fossil bat discovery by nancy simmons of american

Ships Kill Endangered Blue Whales
Ocean noise and harmful algal blooms eliminated as cause of death for 3 sub-adult blue whales. Large numbers of krill in ship channel full of fast boats cause fatalities.
endangered blue whale world's largest whale ship strike fatalities harmful algal blooms ocean noise

OPLAN 34A and Covert Action in Vietnam
Begun by the CIA, OPLAN 34A called for covert action against Communist North Vietnam including aerial bombing in Laos and DeSoto destroyer missions in the Tonkin Gulf.
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The Search for the USS Grunion
The final resting place of the World War II submarine, USS Grunion, is found 64 years after its mysterious loss by the three sons of the submarine commander.
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"If You Don't Stand for Something, You'll Fall for Anything" *
Acronyms don't have this problem ... they <I>always</I> stand for something!

Environmental Reading
Interesting environmental news

The Rolex Miami OCR Yacht Races
Join us for coverage of the Rolex Miami OCR to be held in Miami, Florida beginning on January 21, 2007 with Boating & Sailing at Suite101.
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All the Words Are A Stage
words say the darndest things,
anagrams acronyms

Another Northern Right Dies
Scientists in Massachusetts are mourning the loss of another Northern Right Whale. This whale, believed to be the most prodigious in the population, was killed after a ship hit it sometime this past week.
right whale northern right whale national marine fisheries service

Colorado's Terrific Twins
Colorado trout fishing through the ice and from bankand boat at Twin Lakes
fishing colorado trout twin lakes

Remote Sensing Basics
This article discusses the basic principles of remote sensing.
remote sensing visualization radar electromagnetic simulation

Site Review - Wild Dolphins
The "Wild Dolphin" site by Sally Kirby offers beautiful images, fun facts, insightful quotes, and wonderful poetry all related to dolphins. It is a must see for true dolphin lovers.
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Today's Good Old Days for California Anglers
A nostalgic look at California Fishing
fishing california tackle techniques.

Voles
If you prize your garden veggies, watch out for voles. They sneak in unseen in most cases and your plants disappear overnight. Read this article and see the methods I have and maybe help others of us come up with new ones.
voles rodents garden pests mammals

An Introduction to Sensors
Electrical and mechanical sensors are widely used to characterize the performance and properties of components and systems, but are also found in household objects.
types of sensors uses for sensors sensors used in testing mechanical sensors chemical sensors

Lt Michael Murphy MOH
Lt Michael Murphy was awarded the Congressional Medal of Honor in 2007 after being mortally wounded while leading his Seal unit in Afghanistan in 2005.
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New Whale Species Confirmed
Genetic studies prove that the right whales of the North Pacific are a separate species. But they in serious danger of extinction and very little is known about them
eastern pacific right whale most endangered whale ship strikes fishing gear entanglement critical habitat

River or Freshwater Dolphins
Five species of dolphin have evolved to live in big, muddy rivers. Convergent evolution has made them look very similar despite little genetic connection.
river dolphins river baiji amazon river dolphin ganges river dolphin

Scuba Diving With Sharks
It's not the feeding frenzy of Hollyood movies, but even so, the master scuba diver wore a protective chain mail suit to hand-feed 12-footers with razor sharp teeth.
adventure travel scuba diving bahamas sharks jacques cousteau

St Marys GA, Gateway to Cumberland Island
Take the ferry to the Cumberland Island National Seashore and go camping, hiking and beach combing, or visit historic sites and shop for antiques in St Marys Georgia.
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The Cadborosaurus
A large, snake-like animal is said to make its home in the waters off the west coast of North America.
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The Roman Shipwrecks of Ventotene, Italy
Five Roman shipwrecks off the coast of Italy could help shed light on the busy Italian- North Africa trade route as it existed in Roman times.
roman italy roman trade of italy italian

Threats to Sperm Whales Continue
Moby Dick's whale is still being hunted by Japan and Indonesia. Oceanic pollution, underwater sound, boat traffic and drift nets also problems for the sperm whale.
sperm whales whale hunting japanese whaling ocean pollution and noise net entanglement

U.S Supreme Court Begins Fall 2008 Session
U. S. Supreme Court begins the October 5, 2008 session seeming to avoid any cases that might split the court or the nation during the election season.
u. s.supreme court justices of the supreme court limits of police power election effect on the supreme court cases before the supreme court

Why do Whales Beach Themselves?
Beached whales often die despite the best efforts of those trying save them. Often the damage is already done as a result of being out of the water.
why whales beach themselves why beached whales often die beached whales cetacea why a whale becomes stranded on land


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