November 5, 2005 |
Powerful volcanic eruptions over the last century have slowed the rise in sea level by releasing fine particles that deflect sunlight, cooling the oceans and thus reducing their volume, according to a study published Thursday in the journal Nature. But the effect is only temporary. Using computer models and satellite data, researchers found that the 1991 eruption of Mt. Pinatubo in the Philippines dropped sea levels by about 5 millimeters, or a fifth of an inch, within a year.
February 2, 1991 |
An underwater acoustic signal was heard across the globe this week, marking a milestone in an experiment that researchers hope will make it easier to detect warming of the world's oceans from the greenhouse effect. Sounding like an underwater foghorn, five transmitters suspended 600 feet below a U.S. Navy ship in the southern Indian Ocean began booming every three hours, for one hour at a time, last Saturday.
October 2, 1999 |
His rough-cut hair and beard shine silver like sunlight off water. His eyes are dappled with hues of the reef. He wears a dive-suit sewn in shades of ocean blue. His name seems derived from the sea, too: Cousteau. When he splashes off the stern of a dive boat, Jean-Michel Cousteau folds at the waist. His arms draw to his side. His swim fins flex and bite into the water. He is fluid, streamlined, serene. A cascade of chrome bubbles rise from the scuba regulator in his mouth.
March 24, 1994 |
Scientists seeking to transmit loud sounds through the Pacific Ocean to measure global warming defended their experiment Wednesday, insisting that the noise would not deafen whales and pledging to halt the project if it appeared to be causing harm. "We are not out to harm a single whale with these underwater sounds," said David Hyde, director of the research project at Scripps Institution of Oceanography in San Diego. "We will cease sound transmissions to avoid harm to marine mammals."
June 1, 1999 |
For more than three hours last week, delegates to the world body responsible for the global ban on killing whales for profit discussed more efficient and painless ways to do just that. Norway recommended its new harpoon-borne, high-explosive grenade fired deep into the whale's brain, noting in a scientific report that 63% of the 625 whales it killed that way last year died instantly. Japan said a .
October 23, 1998 |
A national panel of scientists has recommended immediate and substantial reductions in ocean fishing to rebuild marine ecosystems throughout the world that are so severely depleted they are in danger of collapsing. The total volume of fish being caught has reached or exceeded the maximum amount that can be sustained by the world's oceans, the scientists reported. About 84 million metric tons of fish and other seafood are caught each year in marine waters worldwide, worth about $3.
May 26, 2000 |
President Clinton will unveil a plan today intended to permanently protect coral reefs in the northwest Hawaiian Islands and set a course that would ban fishing, offshore drilling and other activities from sensitive ocean waters, a White House official said Thursday. Clinton will order the Commerce and Interior departments to designate "marine protected areas," marked by diverse marine ecosystems.
CALIFORNIA | LOCAL
December 4, 1989 |
"It's tougher than weather, clear as crystal, flexible as paper and can even transform baby breaths or speeding stardust into tiny electrical signals that you can keep an eye on." That's what engineer Victor Chatigny of Penwalt Corp. in Valley Forge, Pa., might say if he made a television ad for a seemingly does-it-all plastic that his company sells as Kynar Piezo Film.
CALIFORNIA | LOCAL
January 9, 1997 |
Just as machines, not man, will carry out the new wave of Martian exploration, scientists are designing and testing new and smarter robots to explore another mysterious and hostile environment--the depths of our own oceans. With only seven manned submersibles worldwide able to dive more than 12,000 feet into the ocean--but just one capable of reaching 21,000 feet--a fleet of unmanned vessels is being developed to extend human beings' reach into the unchartered abyss.
April 16, 1990 |
Rising seas caused by warmth trapped in polluted air could inundate $48 billion worth of property along San Francisco Bay over the next century unless preventive action is taken, a Berkeley research organization estimates in a report released today. The impact of global warming, the so-called greenhouse effect, projected by the nonprofit Pacific Institute, is a worst-case scenario based on a one-meter rise in sea level from melting land ice and expansion of the oceans themselves as they warm.