Search Results for: Ocean

’Popping rocks’ found in deep sea give researchers clues about rare gases from ’young’ seafloor volcano

Scientists aboard the Scripps research vessel Roger Revelle this week solved a 45-year-old geological mystery.

In 1960, Scripps oceanographer Dale Krause reported the discovery of extraordinary deep-sea volcanic rocks in waters off Mexico, near Guadalupe Island, approximately 200 miles south of San Diego. When brought to the surface, the rocks spontaneously explo

Much has been made of the economic impacts of recent biological invasions, but what are the implications of invasions in deep time? Luiz Rocha leads geneticists who time travel through ocean environments. The results of their travels, published online in Molecular Ecology, tell us that during warm, interglacial periods, reef-associated fish (goby genus Gnatholepis), leapt around the horn of Africa into the Atlantic, where their range expanded as the world warmed.

“We found that

Researchers have discovered 10 new molecular structures with pharmaceutical potential in a species of red seaweed that lives in the shallow coral reef along the coastline of Fiji in the south Pacific Ocean.

Some of these natural compounds showed the potential to kill cancer cells, bacteria and the HIV virus, according to research at the Georgia Institute of Technology. In fact, two of them exhibit anti-bacterial activity towards antibiotic-resistant Staphylococcus aureus at con

New evidence from climate records of the past provides some of the strongest indications yet of a direct link between tropical warmth and higher greenhouse gas levels, say scientists at the University of California, Santa Barbara. The present steady rise in tropical temperatures due to global warming will have a major impact on global climate and could intensify destructive hurricanes like Katrina and Rita.

The new evidence linking past tropical ocean temperatures to level

What had been thought to be a minor source of Southern California’s beach sand – erosion from coastal bluffs and cliffs – could account for half of the sand on the region’s beaches.

Coastal geologists have assumed for years that sediment-laden rivers that enter the Pacific Ocean along the Central and Southern California coast supply up to 90 percent of the sand on the region’s beaches. However, new research by two independent groups of UCSD scientists indicates that what had bee

Hurricane Charley came ashore on the southwest coast of Florida as a Category 4 hurricane on Friday, Aug. 13, 2004, and changed the look of North Captiva Island.

The U.S. Geological Survey (USGS), NASA and the U.S. Army Corps of Engineers are studying the effects of Charley as part of a cooperative research project investigating coastal change.

The USGS Coastal and Marine Geology Program investigates the extent and causes of coastal impacts of hurricanes and extreme