Tag: "continental" at biology news
Researchers describe overall water balance in subglacial Lake Vostok
...million years under the tremendous pressure of the continental
ice sheet. An ice core -- one of the worlds longest -- was drilled by a joint U.S., Russian, and French team at Russias Vostok Station on the lakes western shore. But coring was stopped roughly 100 meters (328 feet) above what is thought to be ...
URI scientists study life buried deep beneath the ocean floor
... buried sediment. The second province occurs along continental
margins. In this province, the total rate of micro... beneath the seafloor occur in a narrow zone along continental
margins where the deeply buried methane comes into contact with the shallowly buried sulfate. In thi...
Years of research, thought lead geologist to propose new supercontinent Columbia
...zil lined up with eastern North America, forming a continental
margin that extended into the southern edge of Scandinavia. This formed an area that stretched about 8,000 miles from southern South America to northern Canada and was about 3,000 miles across at its widest part, Rogers said. Columbia began to...
February media highlights - GSA Bulletin
...the granitoids formed above a subduction zone in a continental
arc environment, similar to the present-day Andes ...stian, Oregon, records the tectonic history of the continental
margin. A history that includes the switch around three to two million years ago from a margin where...
NSF to support study of environmental warming in the Arctic
...olume of new sea ice created each year on thebroad continental
shelves of Russia. The biological productivityof the region, in turn, supports fisheries and marine mammals,while changes in the sea ice influence climate due to the icessignificant effect on the earths heat budget. This effort represents the f...
URI oceanography models migration and foraging strategies of North Atlantic right whales
...ow the lay of the land, such as the coastline, the continental
shelf edge, or undersea landmarks such as seamounts, during their migration between their wintering grounds and their feeding grounds in the Gulf of Maine region. Studies have also suggested that whales use the sun or the Earths magnetic field for mi...
January media highlights-GSA Bulletin
...hiolites from the Earth's orogenic belts (scars of continental
collisions) that formed prior to 1 billion years ago (1 Ga). The chemical composition and structure of these very old ophiolites suggest that the nature of the oceanic crust was quite different prior to 1 Ga than at present. It was thicker, and at ti...
January media highlights: GEOLOGY and GSA TODAY
...x multifault zones of deformation, similar to some continental
strike-slip systems. Examples are the 750-km-long, 120-km-wide Andrew Bain transform on the Southwest Indian Ridge, and the Romanche transform, where the Mid-Atlantic Ridge is offset by a lens-shaped, ~900-km-long, ~100-km-wide sliver of deformed lit...
Antarctic mud reveals ancient evidence of global climate change
...om of the Palmer Deep - a submerged section of the continental
shelf along the west Antarctic Peninsula about 3,0...lution Holocene sediment record from the Antarctic continental
margin." The sediment sample revealed higher concentrations of diatom shells during the mid-Holocene...
December media highlights - GSA BULLETIN
...f the Asian continent from tectonic activity along continental
margins to the north, east, and south. Present tectonic motion across the Coast Ranges and San Andreas fault system in central California.Donald F. Argus. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA,...
December Media Mighlights: GEOLOGY and GSA TODAY
... Mountains and leads to new insights into both how continental
lithosphere was assembled in the Precambrian and h... step in better understanding the evolution of the continental
lithosphere in North America....
Ecosystems slowed 1990s greenhouse gas buildup
...ers note. Forexample, Chinese inventory studies of continental
plant growth show amajor carbon sink resulting from extensive programs in foresting andreforesting....
Rafting rodents from Africa may have been ancestors of South American species
...f these rodents to South America are too young for continental
drift to have played a role in their colonization by African ancestors. This presents a dilemma, because either caviomorph ancestors dispersed to South America from Africa over water (e.g., by rafting) or the caviomorph radiations are considerably o...
Beyond global warming: Where on Earth are we going?!
...al atmosphere, world oceans, cryosphere (including continental
ice sheets, ice caps, glaciers, sea ice and snow cover), and the land surface and ground water systems, which together constitute the Earth's physical climate system. The implementation of the WCRP is led by a small permanent staff located in the WMO...
Unusual source of ocean water contamination may rewrite environmental textbooks
...w rates, some 4.6 million saltwater marshes in the continental
United States could be affected similarly, Grant said. Research to that effect could throw those favoring the expansion of wildlife habitats for a loop -- to say nothing of the environmental scientists -- he suggested. "One scenario is that anywhere ...
International scientists probe unsolved puzzles of the Earth and beyond at "Earth System Processes"
...variables as increased solar luminosity, increased continental
area, and decline in seafloor spreading. He predic...ere induced by plate tectonic processes. Following continental
collisions, enhanced physical and chemical breakdown of minerals from resulting mountainous land-mas...
Rutgers and Philadelphia's NBC television affiliate launch first water forecasting system for visitors to the New Jersey shore
...to track variations inocean temperatures along the continental
shelf, a relatively shallow part of the Atlantic extending about 100 miles off the New Jersey coast. It also employs surface radar to monitor the speed, direction and height of waves in the shelf area. Radar sites are at Wildwood, Brigan...
Whales drawn to waters off Mississippi River Delta
...e typically found in these deeper waters along the continental
shelf. "The unique aspect of the Gulf is we have a continental
shelf that is only about 25 miles wide off the Mississippi Delta, so we have this influx of freshwat...
Researchers prove past cooling trend caused by move from forests to agriculture
... levels. "The estimated temperature change in the continental
United States as a result of change from forests to agriculture is up to a 2-degree Fahrenheit cooling," Caldeira said. "So, when we talk about global warming, we can no longer take for granted that this global warming is starting from some natural c...
NSF ships to probe biological enigmas of the frozen southern ocean
...t detailed examinations of the water-column on the continental
shelf and in the bay from a series of fixed locations. "The Palmer will map the distribution of krill, phytoplankton, seabirds, mammals, whales and seals," explained Peter Wiebe, of the Woods Hole Oceanographic Institution in Woods Hole, Mass. "The...
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