Search Results for: ocean

Over the past six weeks, scientists aboard the research vessel “Polarstern” of the Alfred Wegener Institute for Polar and Marine Research have been investigating changes in ocean temperature and sea ice cover in the area of Fram Strait between Spitsbergen and Greenland.

In this area significant exchange of water masses between the Arctic Ocean and the Atlantic Ocean takes place. The ongoing process of global warming throughout the past years has also altered conditions in Fram Stra

US saltwater recreational fishing catch rivals commercial fisheries for many depleted fish stocks including red snapper, black seabass, and lingcod

Taking a hard look at the common belief that recreational fishing accounts for only 2-3% of total landings in the U.S., a new study published in the journal Science (August 26th) reveals that recreational catches account for nearly a quarter of the total take of over fished populations, including many of the most economically valuable sp

Large, nutrient-poor expanses of the open ocean are getting a substantial nitrogen influx from an abundant group of unicellular organisms that “fix,” or chemically alter, nitrogen into a form usable for biological productivity.

First identified about five years ago, these organisms – about 7 microns in diameter – are fixing nitrogen at rates up to three times higher than previously reported for the Pacific Ocean, according to research published in the Aug. 26, 2004 edition of th

IODP team succeeds in recovering sub-seafloor sample

The first 40 million years of Arctic climate history have been recovered from beneath the Arctic seafloor this week. After four days of working in hazardous conditions, the Integrated Ocean Drilling Program’s (IODP) Arctic Coring Expedition (ACEX) retrieved 272 meters of core. Extreme sea ice then forced the ship to abandon its position.
Coring of the Arctic’s first scientific borehole–located roughly 145 miles (23

Dynamic ice

A technique borrowed from the surface physics community is helping chemists and atmospheric scientists understand the complex chemical reactions that occur on low-temperature ice.

Known as electron-stimulated desorption (ESD), the technique uses low-energy electrons to locally probe surfaces, differentiating their characteristics from those of the bulk material below them. Using ESD, researchers at the Georgia Institute of Technology have demonstrated that hyd

New theory on drizzle formation says a few big drops get all the water

In research that could lead to more accurate weather forecasts and climate models, scientists at the U.S. Department of Energy’s Brookhaven National Laboratory say a physical limit on the number of cloud droplets that grow big enough to form drizzle paradoxically makes drizzle form faster. That’s because those few droplets that cross the drizzle “barrier” readily collect enough surrounding droplets to