EurekAlert! - Science News: Marine Science Portal

Showing releases 201-225 out of 432 releases.
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Public Release: 18-Jun-2009

Chapman Conference on Abrupt Climate Change
Ancient drought and rapid cooling drastically altered climate
Two abrupt and drastic climate events, 700 years apart and more than 45 centuries ago, are teasing scientists who are now trying to use ancient records to predict future world climate. The events -- one, a massive, long-lived drought believed to have dried large portions of Africa and Asia, and the other, a rapid cooling that accelerated the growth of tropical glaciers -- left signals in ice cores and other geologic records from around the world.

National Science Foundation

Public Release: 18-Jun-2009

Science
CO2 higher today than last 2.1 million years
Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the Earth's cycles of cooling and warming.

National Science Foundation

Public Release: 17-Jun-2009

Environmental Research Letters
Rising acidity levels could trigger shellfish revenue declines, job losses
Changes in ocean chemistry -- a consequence of increased carbon dioxide emissions from human industrial activity -- could cause US shellfish revenues to drop significantly in the next 50 years, according to a new study by researchers at the Woods Hole Oceanographic Institution.

National Science Foundation

Public Release: 16-Jun-2009
ASU researcher is among authors of new US global climate change report
"This report is a very thorough, sobering synthesis of what we now know about the impacts of climate change on all of us," says Nancy Grimm, a professor at Arizona State University, one of the authors on the new federal study assessing the current and anticipated domestic impacts of climate change.

Public Release: 16-Jun-2009
New report outlines current, future impacts of climate change
The University of Arizona's Jonathan Overpeck is among the lead authors of the national report that details risks from warming, as well as ways to adapt to future conditions.

US Global Change Research Program

Public Release: 16-Jun-2009

Geophysical Research Letters
Global sunscreen won't save corals
Emergency plans to counteract global warming by artificially shading the Earth from incoming sunlight might lower the planet's temperature a few degrees, but such "geoengineering" solutions would do little to stop the acidification of the world oceans that threatens coral reefs and other marine life, report the authors of a new study. The culprit is atmospheric carbon dioxide, which even in a cooler globe will continue to be absorbed by seawater, creating acidic conditions.

Public Release: 16-Jun-2009

Science of the Total Environment
Mercury in Mackenzie River delta dramatically higher than previously believed
University of Alberta researchers conducting a water study in the Mackenzie River Delta have found a dramatically higher delivery of mercury from the Mackenzie River to the Arctic Ocean than determined in previous studies.

Public Release: 15-Jun-2009

Chapman Conference on Abrupt Climate Change
Sediment yields climate record for past half-million years
Researchers here have used sediment from the deep ocean bottom to reconstruct a record of ancient climate that dates back more than the last half-million years. The record, trapped within the top 20 meters (65.6 feet) of a 400-meter (1,312-foot) sediment core drilled in 2005 in the North Atlantic Ocean by the Integrated Ocean Drilling Program, gives new information about the four glacial cycles that occurred during that period.

Public Release: 12-Jun-2009

Journal of Climate
AMS June science highlights
Following are story ideas and tips about upcoming AMS meetings, papers in our peer-reviewed journals, and other happenings in the atmospheric and related sciences community.

Public Release: 11-Jun-2009

Climate Dynamics
Australia's climate: Drought and flooding in annual rings of tropical trees
Annual rings are acclaimed in representing natural climate archives. For the temperate latitudes it is known that the growth of these annual rings depend mainly on temperature and precipitation. In the tropics, however, with only slight seasonal variations, the correlation is not so evident.

Public Release: 10-Jun-2009

Biology Letters
Hatchery fish may hurt efforts to sustain wild salmon runs
Steelhead trout that are originally bred in hatcheries are so genetically impaired that, even if they survive and reproduce in the wild, their offspring will also be significantly less successful at reproducing, according to a new study published today by researchers from Oregon State University.

Bonneville Power Administration

Public Release: 9-Jun-2009

Proceedings of the Royal Society B
Caribbean coral reefs flattened
Coral reefs throughout the Caribbean have been comprehensively "flattened" over the last 40 years, according to a disturbing new study by the University of East Anglia.

Public Release: 4-Jun-2009
What everyone should know about Earth sciences summarized in free NSF-funded e-booklet
If you're clueless about petrology, paleobiology and plate tectonics, the National Science Foundation and the Earth Science Literacy Initiative have just released a free pamphlet offering a concise primer on what all Americans should know about the Earth sciences.

National Science Foundation

Public Release: 2-Jun-2009
Hybrid remotely operated vehicle 'Nereus' reaches deepest part of the ocean
A new type of deep-sea robotic vehicle called Nereus has successfully reached the deepest part of the world's ocean, reports a team of US engineers and scientists aboard the research vessel Kilo Moana. The dive to 10,902 meters (6.8 miles) occurred on May 31, 2009, at the Challenger Deep in the Mariana Trench in the western Pacific Ocean.

National Science Foundation, US Office of Naval Research, National Oceanic and Atmospheric Administration, Russell Family Foundation, Woods Hole Oceanographic Institution

Public Release: 1-Jun-2009

Environmental Research Letters
Who will pick up the bill?
Ocean acidification, a direct result of increased CO2 emission, is set to change the Earth's marine ecosystems forever and may have a direct impact on our economy, resulting in substantial revenue declines and job losses.

Public Release: 29-May-2009

Coastal Engineering
Height of large waves changes according to month
A team of researchers from the University of Cantabria has developed a statistical model that makes it possible to study the variability of extreme waves throughout the year, according to the journal Coastal Engineering. The study has shown that there are seasonal variations in the height of waves reaching Spain's coasts, and stresses the importance of this data in planning and constructing marine infrastructures.

Public Release: 28-May-2009

Biogeosciences
NASA satellite detects red glow to map global ocean plant health
Researchers have conducted the first global analysis of the health and productivity of ocean plants, as revealed by a unique signal detected by a NASA satellite.

NASA

Public Release: 28-May-2009
University of Maryland-led consortium wins $93 million NOAA climate institute
The University of Maryland will lead a new climate research partnership with the National Oceanic and Atmospheric Administration, North Carolina State University and 16 other institutions. The nationwide consortium led by Maryland won a competition for a new NOAA-supported Cooperative Institute for Climate and Satellites that will receive up to $93 million in funding over five years, with approximately two-thirds of this funding expected to be managed by Maryland's Earth System Science Interdisciplinary Center.

Public Release: 28-May-2009
SMOS ready to ship to launch site
ESA's next Earth Explorer, SMOS, has just passed the all-important Flight Acceptance Review, signifying that all the elements that make up the mission are in place for launch later this year. The satellite can now be prepared for its journey to the Plesetsk Cosmodrome in northern Russia.

Public Release: 28-May-2009

Biogeosciences
Breakthrough made in assessing marine phytoplankton health
Researchers from Oregon State University, NASA and other organizations said today that they have succeeded for the first time in measuring the physiology of marine phytoplankton through satellite measurements of its fluorescence -- an accomplishment that had been elusive for years.

NASA

Public Release: 28-May-2009

Science
Studies shed light on collapse of coral reefs
An explosion of knowledge has been made in the last few years about the basic biology of corals, researchers say in a new report, helping to explain why coral reefs around the world are collapsing and what it will take for them to survive a gauntlet of climate change and ocean acidification.

National Science Foundation

Public Release: 27-May-2009
NSF announces funding for Alaska Region Research Vessel
The National Science Foundation has announced that the Alaska Region Research Vessel will be the first project funded from NSF's portion of the nation's economic stimulus funds, the American Recovery and Reinvestment Act.

National Science Foundation

Public Release: 27-May-2009

Geophysical Research Letters
Melting Greenland ice sheets may threaten Northeast United States, Canada
A melting of the Greenland ice sheet this century may drive more water than previously thought toward the already threatened coastlines of New York, Boston, Halifax and other cities in the northeastern United States and in Canada, according to new research led by NCAR.

National Science Foundation, US Department of Energy

Public Release: 24-May-2009

Oceans Past II
Ocean life in olden days: Researchers upend modern notions of 'natural' animal sizes, abundance
Using such diverse sources as old ship logs, literary texts, tax accounts, newly translated legal documents and even mounted trophies, Census of Marine Life researchers are piecing together images -- some flickering, others in high definition -- of fish of such sizes, abundance and distribution in ages past that they stagger modern imaginations. They are also documenting the timelines over which those giant marine life populations declined.

Public Release: 21-May-2009

Journal of the Acoustical Society of America
Thieving whale caught on video gives rare clues about hunting strategy, sound production
A marine mammal videotaped stealing fish provides information about animal's physical features.

Showing releases 201-225 out of 432 releases.
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