Earth Sciences

The anticipated Mars landing on Jan. 24 of the Opportunity rover will be a bit more challenging than the Spirit’s bounce onto the red planet earlier this month, according to a University at Buffalo geologist, but if it’s successful, then scientists will be able to be much bolder about selecting future Mars landing sites.

“If both of these landers survive with airbag technology, then it blows the doors wide open for future Mars landing sites with far more interesting terrain,” said

A hot debate in the Earth Sciences is finally resolved in this week’s issue of Nature. Researchers from the Department of Earth Sciences at Bristol University show that large volcanoes do not contain material from the Earth’s core. This overturns previous theories that conflicted with models of how the Earth’s magnetic field is sustained.

The magnetic field results from the movement of liquid iron in the core and affects everything from bird migration to the navigation of aircraft, so it is

NASA’s QuikSCAT satellite is providing meteorologists with accurate data on surface winds over the global oceans, leading to improved 2- to 5- day forecasts and weather warnings. The increased accuracy, already being used in hurricane forecasts, is bringing economic savings and a reduction in weather-related loss of life, especially at sea, according to a recent NASA study.

Robert Atlas, a research scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md., demonstrated the initial

2004 Earth Feature Story

Satellites and computers are getting so good, that now they can help study human activity on scales as local as ones own neighborhood, and may answer questions concerning how local conditions affect global processes, like water and energy cycles.

NASA’s Land Information System (LIS) uses computer models to predict impacts that cities and other local land surfaces might have on regional and global land and atmospheric processes. Dr. Christa Pete

The oceans have their desert zones, in other words areas poor in nutrients and unfavourable for phytoplankton to develop. Half of the southern Pacific thus consists of great expanses of warm water with an average temperature of 28 °C (a greater surface area than Europe), which receives no input of deep-source cold water, rich in nutrient salts.

However, in 2000 analyses of satellite observations on the colour of the ocean conducted by American scientists revealed unusually high concentrati

Medium to large earthquakes occurring along the central San Andreas Fault appear to cluster at regular three-year intervals – a previously unnoticed cycle that provides some hope for forecasting larger quakes along this and other California faults.

A study by University of California, Berkeley, seismologists shows a higher probability of moderate to large quakes – magnitude 4, 5 and 6 – just as the frequency of smaller quakes, called microquakes, begins to increase along the northern half of