Search Results for: Ocean

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

Researchers from the Universitat Autònoma de Barcelona and Durham University (UK) have discovered that a million years ago, global climate changes occurred due to changes in tropical circulation in the Pacific similar to those caused by El Niño today. Changes in atmospheric circulation caused variations in heat fluxes and moisture transport, triggering a large expansion of the polar ice sheets and a reorganisation of the Earth’s climate. The discovery, published in Geology, shows that local climate

One million years ago a change in the tropics made the northern hemisphere ice masses expand

Researchers from the Universitat Autònoma de Barcelona and Durham University (UK) have discovered that a million years ago, global climate changes occurred due to changes in tropical circulation in the Pacific similar to those caused by El Niño today. Changes in atmospheric circulation caused variations in heat fluxes and moisture transport, triggering a large expansion of the polar ice she

While we generally think of water in nature as a cool liquid that we can see — streams, lakes, oceans — there is a great deal of “hot fluid” activity taking place far out of sight, deep within the earth, that influences what ultimately takes place on the surface, including the amount of rainfall and the buildup of new land mass.

What exactly is the nature of that hidden fluid deep beneath the surface and what changes does it undergo as it seeks an ever-deeper venue?

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