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Geotimes
July 2007
Carolyn Gramling
X-ray Eyes in the Sky Scientists are working on the next generation of low-orbiting satellites that they hope will see far past the Earth's surface and into its interior, to better understand the structure and composition of Earth's crust, mantle and core. mark for My Articles similar articles
Geotimes
January 2007
Nicole Branan
Heat Flow Causes Magnetic Reversals Earth's magnetic field has done hundreds of somersaults over the last few billion years. A new study sheds some light on what causes the geomagnetic field to flip. mark for My Articles similar articles
Geotimes
May 2007
Kathryn Hansen
Deep Earth May Hold an Ocean Earth's deep interior, more than 1,000 kilometers below the surface in the mantle, could prove to be a watery place. That's the conclusion researchers drew from an anomaly uncovered by the first global map of Earth's lower mantle, using a new type of seismic analysis. mark for My Articles similar articles
Geotimes
August 2007
Carolyn Gramling
Earth's Core is Solid, After All Seismic waves passing through Earth's center have long puzzled researchers, as some waves travel fast enough to indicate that Earth's inner core is solid iron-nickel crystals, but they do not travel quite as quickly as scientists would expect, based on studies of stiff iron alloys. mark for My Articles similar articles
Geotimes
May 2003
Lisa M. Pinsker
Molten martian core The more researchers study Mars, the more similarities they seem to find between the Red Planet and Earth. The latest parallels come from the planet's enigmatic interior. mark for My Articles similar articles
Geotimes
April 2007
Kathryn Hansen
Ocean Waves Drive Earth's Hum High-energy near-shore waves are the main source of energy for the constant seismic background noise known as Earth's "hum." mark for My Articles similar articles
Geotimes
March 2005
Naomi Lubick
Keiiti Aki: Seismological Polymath Like the seismic waves he studies, Keiiti Aki's pioneering work on the basic tenets of seismology reaches across the planet. mark for My Articles similar articles
Geotimes
June 2005
Naomi Lubick
Double-Crossing the Core A team of scientists has taken the properties of a mineral from the Earth's lower mantle, together with seismic observations of the core-mantle boundary, to propose a new model that could elucidate the heat engine that drives Earth. mark for My Articles similar articles
Geotimes
May 2004
Sara Pratt
Deciphering Planetary Magnetism Neptune and Uranus both have unusual magnetic fields that tilt at a 60-degree angle toward their equators. Scientists are now able to model the processes that shape the planets' magnetism. mark for My Articles similar articles
Geotimes
September 2005
Naomi Lubick
Supercomputer Models Earth's Magnetic Field A team of researchers has made a step toward modeling the Earth's chaotic magnetic field behavior using one of the largest supercomputers on the planet to run the most realistic model yet. mark for My Articles similar articles
Geotimes
July 2006
Carolyn Gramling
Afar From Close-up Powerful stresses in the crust lead to frequent earthquakes and volcanism in the Afar Depression of northeastern Ethiopia. Researchers now say that the source of this activity reveals a possible new connection in Earth's interior. mark for My Articles similar articles
Geotimes
July 2007
Carolyn Gramling
Mercury's Gooey Center Mercury, the closest planet to the sun, has a large core, which scientists now know is partially molten and therefore could create a magnetic field around the planet. mark for My Articles similar articles
Geotimes
April 2003
Christina Reed
Watching The Core: A movie review Geotimes went to the movies with four geophysicists from the Carnegie Institution of Washington to see the new blockbuster movie The Core. With Hollywood blaming its newest apocalypse on Earth's core, we couldn't resist. mark for My Articles similar articles
Geotimes
July 2003
Lisa M. Pinsker
Challenging core ideas Earth's core has never been so popular -- first plastered over billboards to advertise the recent movie The Core, and now in press worldwide discussing David Stevenson's "modest proposal" to send a grapefruit-sized probe thousands of kilometers into the planet's mysterious core. mark for My Articles similar articles
Geotimes
September 2006
Carolyn Gramling
Donald Forsyth: At Play in the Field Forsyth emphasizes that collaborating with students and other researchers is not only important to solving tough geological puzzles, but also is much of the fun. mark for My Articles similar articles
Chemistry World
May 13, 2014
Tim Wogan
Chemistry calculations reveal Earth's inner core Theoretical calculations have confirmed that the Earth's core contains a significant proportion of oxygen. mark for My Articles similar articles
National Defense
September 2010
Grace V. Jean
Scientists Say They Are Closer Than Ever to Predicting Earthquakes Researchers have discovered that there are warning signs that can be detected in the weeks and hours prior to temblors. mark for My Articles similar articles
Geotimes
May 2007
Carolyn Gramling
Slow Earthquakes, Tiny Tremors Small earthquakes and tiny tremors originating deep in fault zones are the result of slow earthquakes at Earth's surface, according to a new study. mark for My Articles similar articles
Scientific American
March 2005
Madhusree Mukerjee
The Scarred Earth Tsunami-spawning quake leaves geophysical changes. mark for My Articles similar articles
Geotimes
November 2003
Naomi Lubick
Turkish tectonics Researchers recently published preliminary results of the first data collected with modern techniques documenting the tectonic and seismic regimes of eastern Turkey. Their work may overturn conceptions of the tectonic setting of the region. mark for My Articles similar articles
Geotimes
June 2007
Kathryn Hansen
So, When Did Earth Become Attractive? Ever since Earth's protective field was discovered in 1958, scientists have been wondering when did the planet grow up and become attractive? mark for My Articles similar articles
Geotimes
July 2006
Kathryn Hansen
Ship Logs Record Earth's Magnetism New information gleaned from old ships' logs is now leading to a better understanding of the magnetic field's past strength, which is turning out to be more erratic than some scientists previously thought. mark for My Articles similar articles
Popular Mechanics
October 5, 2009
Amber Angelle
Earthquake Research Digs Deep to Find Timely Warning System Right now, the best that seismologists can do to "predict" earthquakes is to send out a warning immediately after activity is detected. mark for My Articles similar articles
Geotimes
August 2004
Sara Pratt
Pressure Shifts in Yellowstone The 2002 rupture of Alaska's Denali fault triggered more than 250 smaller-magnitude quakes, altering the eruption behavior of many of the park's famed geysers. mark for My Articles similar articles
Popular Mechanics
September 2008
Joe Pappalardo
30-Ton Metal Sphere Spins for Magnetic Fields (With Video!) Building a test planet takes serious engineering. Researchers at the University of Maryland have constructed a 30-ton sphere that spins at more than 90 mph to generate magnetic fields. mark for My Articles similar articles
Geotimes
March 2007
Carolyn Gramling
New Madrid Fault Dying? A series of devastating earthquakes that altered the course of the Mississippi River in the early 19th century may have been among the last gasps of an old, dying fault system, a controversial new study suggests. mark for My Articles similar articles
Geotimes
July 2004
Sara Pratt
Core Compositions Scientists are working to explain the differences in composition between Earth and Mars. mark for My Articles similar articles
Geotimes
August 2003
Naomi Lubick
Fast earthquakes break speed limit Some earthquakes may move faster than seismologists once thought possible. A new study published in the Aug. 8 Science shows the most convincing data yet that a large earthquake can travel down a fault at velocities that surpass theoretical limits. mark for My Articles similar articles
Geotimes
June 2005
Naomi Lubick
Seeing Earthquakes From Space A small instrument aboard the International Space Station can be used to look for disturbances in the Earth's magnetic field that may precede large earthquakes. mark for My Articles similar articles
Geotimes
February 2004
Naomi Lubick
Pursuing plumes Geophysicists recently presented improved methods for imaging mantle plumes, providing the strongest evidence yet that some plumes extend all the way down to the coremantle boundary. mark for My Articles similar articles
Geotimes
February 2004
Naomi Lubick
Triggering Tsunamis A controversy over whether an earthquake or an underwater landslide generated the 1998 Papua New Guinea tsunami rekindled interest in such events; it also drew geologists into a field that had been dominated by modelers and seismologists. mark for My Articles similar articles
IEEE Spectrum
November 2006
Kieron Murphy
Q&A: Paul G. Richards, Nuclear Arms Seismologist An interview with the Mellon Professor of the Natural Sciences at Lamont-Doherty Earth Observatory of Columbia University on the science of detecting and measuring nuclear weapons test explosions. mark for My Articles similar articles
IEEE Spectrum
August 2006
Stephen Cass
Summer Reading Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface by David Standish... Kids to Space: A Space Traveler's Guide by Lonnie Jones Schorer... etc. mark for My Articles similar articles
Popular Mechanics
October 11, 2006
Alex Hutchinson
Nuke Watch: How Scientists Sniffed Out N. Korea This timely exclusive looks at nuclear detection technology and finds out just how tough it is to hide a weapons blast. mark for My Articles similar articles
Geotimes
January 2006
Naomi Lubick
Seismic Warnings Researchers suggest that the first few seconds of an earthquake have the potential to reveal the final size that an earthquake will grow to be -- with implications for how earthquakes physically unfold. mark for My Articles similar articles
Geotimes
July 2004
Joining the Academy The National Academy of Sciences (NAS) elected six geoscientists to join its membership this year, one of the highest honors in the scientific community. From surface to core, the new members are a diverse group. mark for My Articles similar articles
Geotimes
October 2004
Jay Chapman
Melting Glaciers Promote Earthquakes In southern Alaska, melting glaciers heat up the possibility of earthquakes. mark for My Articles similar articles
Geotimes
April 2005
Naomi Lubick
Sumatra Quake Stronger Than Thought Now that researchers have had time to go back to the records, they are finding indications that last December's Sumatra earthquake released much more energy than they thought, in the form of rare low-frequency seismic waves. mark for My Articles similar articles
Geotimes
October 2003
Josh Chamot
Earthquake warning tools The ability to forecast a seismic event has been an elusive goal, but researchers are accepting the challenge and are using recent advances in seismic and computational technology to attempt to decipher Earth's subtle clues. mark for My Articles similar articles
AskMen.com Earthquake Savings Time Earth's days may have gotten a little bit shorter since the massive earthquake in Chile, but don't feel bad if you haven't noticed. mark for My Articles similar articles
Geotimes
December 2003
Naomi Lubick
Glacial earthquakes Seismologists have fingered glaciers as one source of newly discovered "slow" earthquakes. mark for My Articles similar articles
Geotimes
February 2005
Naomi Lubick
Tsunami Devastates Asia Geoscientists won't know exactly what happened in the Indian Ocean event until they can get into the field. mark for My Articles similar articles
Geotimes
March 2005
Susan E. Hough
Earthquakes: Predicting the Unpredictable? Seismologists are quite good at identifying where large earthquakes are likely to occur on time scales of several decades to centuries, but still unable to identify regions where earthquakes will happen tomorrow, next week, or even within the next few years. mark for My Articles similar articles
Geotimes
July 2006
Carolyn Gramling
Earth Soaks up Seawater Geologists have long thought that seawater does not travel very far through Earth's interior A new geochemical study, however, is challenging that notion, saying that traces of seawater exist deep inside the planet. mark for My Articles similar articles
Geotimes
October 2006
Carolyn Gramling
Strong Earthquake Shakes up Hawaii A magnitude-6.7 earthquake rumbled through the island chain of Hawaii, originating near Hawaii island, known as the "Big Island," according to the USGS. An aftershock with a magnitude of 6.0 followed seven minutes later. mark for My Articles similar articles
Geotimes
July 2007
Geophysicist Ross Stein Like all who study earthquakes, Ross Stein doesn't want to just understand them - he wants to anticipate them. mark for My Articles similar articles
Geotimes
November 2007
Carolyn Gramling
How Does Your Continent Grow? Data from ancient mantle rocks are helping to shore up the hypothesis that the continental crust was extracted in pulses, during periodic large melting events in the mantle. mark for My Articles similar articles
Geotimes
September 2007
Elizabeth Quill
Earth's Heat Buoys up Its Crust New research suggests that without the heat in Earth's crust and upper mantle creating elevation, much of North America would be underwater. mark for My Articles similar articles
Geotimes
December 2005
Highlights 2005 -- Natural Hazards Drilling a fault... Mount St. Helens awakens... Reviewing Sumatra... SAFOD crosses the fault... mark for My Articles similar articles
Geotimes
October 2006
Jennifer Yauck
River Bends Reveal Past Quakes The connection between river courses and earthquake activity is allowing seismologists to look at past earthquakes along a Midwestern fault zone with new perspective, and could enable them to more accurately assess future earthquake risk in the Mississippi region. mark for My Articles similar articles