Search Results for: Ocean

Satellites capture first-ever gravity map of tides under Antarctic ice

Ohio State University scientists have used minute fluctuations in gravity to produce the best map yet of ocean tides that flow beneath two large Antarctic ice shelves.

They did it using the twin satellites of the Gravity Recovery and Climate Experiment (GRACE), a joint project of NASA and the German Aerospace Center.

Large tides flow along the ocean floor beneath the Larsen and Filchner-Ronne Ice Shelves. Though scientists have long known of these tides, they have not

Virtual modelling goes high performance

Product and system prototyping can be as sophisticated and complex as the final products they seek to model. But to model the capabilities of advanced factories and sophisticated vehicles calls for the tools developed by European researchers.

The FLEXICON project addressed the need to reduce the timescales required for producing open and distributed fault-tolerant control and monitoring systems. It developed two integrated suites of tools to support the different development p

A century after 1906 earthquake, geophysicists revisit ’Big One’ and come up with new model

Almost a century after the 1906 earthquake, Stanford geophysicists have revisited San Francisco’s ’’Big One’’ and now paint a new picture of a fault that was ready to go and that ruptured farther and faster than previously supposed.

“Our understanding of seismic hazard in Northern California, including the Bay Area, relies on a thorough understanding of this earthquake and the San Andreas Fault,” said Professor Gregory C. Beroza, who with graduate student

As Montreal Conference considers deforestation issues, ESA presents space solution

As the future of Earth’s forests moved up the agenda at the United Nations Climate Change Conference – negotiating a post-Kyoto strategy to combat global warming – ESA and its national collaborators presented delegates with promising results from projects using satellites to identify wide-area forest retreat and expansion.

The planet’s climate is moving into uncharted territory, as our burning of fossil-fuels and clearances of forests release massive amounts of heat-trapping

Tropical Atlantic cooling and African deforestation correlate to drought

Against the backdrop of the Montreal Summit on global climate being held this week, an article on African droughts and monsoons, by a University of California, Santa Barbara scientist and others, which appears in the December issue of the journal Geology, underlines concern about the effects of global climate change.

Tropical ocean temperatures and land vegetation have an important effect on African monsoon systems, explains first author Syee Weldeab, a post-doctoral fellow in

Earthquake ’pulses’ could predict tsunami impact

The magnitude 9.2 earthquake that triggered a devastating tsunami in the Indian Ocean in December of 2004 originated just off the coast of northern Sumatra, but an “energy pulse” – an area where slip on the fault was much greater – created the largest waves, some 100 miles from the epicenter. Seismologists have mapped these energy pulses for Sumatra and are trying to learn more about them to predict better when and where tsunamis may occur. They also hope these pulses will help them gain a more co

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