Daily non-political popular news in brief.

Seismologists measure heat flow from Earth's molten core into the lower mantle

For the first time, scientists have directly measured the amount of heat flowing from the molten metal of Earth's core into a region at the base of the mantle, a process that helps drive both the movement of tectonic plates at the surface and the geodynamo in the core that generates Earth's magnetic field.

Read more »

Keywords: seismologists, measure, heat, flow, earth, molten, core, lower, mantle, seismologist

« Previous | Next »

Similar news on "Seismologists measure heat flow from Earth's molten core into the lower mantle":

1. New picture of Earth's lower mantle
   06-21-2007 · EurekAlert!
   Laboratory measurements of a high-pressure mineral believed to exist deep within the Earth show that the mineral may not have the right properties to explain a mysterious layer lying just above the planet's core.
   Similar news · Read more »
   
2. AGU journal highlights -- Nov. 27, 2006
   11-27-2006 · EurekAlert!
   In this issue: Melting the Snowball Earth; Seismic wave speed in the lower mantle; Water in Saturn's ionosphere; Mapping the boundaries between water currents using seismic reflection; Landslide at Mt. Etna generated a large tsunami in the Mediterranean Sea nearly 8000 years ago; Drill hole reveals what San Andreas Fault looks like at depth, and Nitrogen oxide pollutants have declined over the eastern United States since 1999.
   Similar news · Read more »
   
3. AGU Journal Highlights -- May 16, 2007
   05-16-2007 · EurekAlert!
   In this issue: Three Gorges Dam shrinks Yangtze delta, New exam yields healthier prognosis for Arctic permafrost, Mapping flood waves from space, Imaging Earth's deep mantle near the core-mantle boundary, CloudSat satellite tracks tropical clouds and rain, El Nino plays with tropical instability waves, Improving land-surface model hydrology.
   Similar news · Read more »
   
4. Helium isotopes point to new sources of geothermal energy
   11-29-2007 · EurekAlert!
   By measuring helium isotope ratios in fluids at the surface, geochemists Mack Kennedy of the Department of Energy's Lawrence Berkeley National Laboratory and Matthijs van Soest of Arizona State University have discovered a new tool for identifying potential geothermal energy resources. The potential resources arise not from volcanism but from the flow of surface fluids through deep fractures that penetrate the earth's lower crust, in regions far from current or recent volcanic activity.
   Similar news · Read more »
   
5. Experiments challenge models about the deep Earth
   09-20-2007 · EurekAlert!
   In the first experiments able to mimic the crushing, searing conditions found in Earth's lower mantle, and simultaneously probe telltale properties of iron, scientists have discovered that material there behaves very differently than predicted by models. The research also points to the likelihood of a new zone deep in the Earth.
   Similar news · Read more »
   
6. Research reveals limitations of seismic data for mapping rock units in young oceanic crust
   01-29-2007 · EurekAlert!
   Researchers report in Nature that an approach used for years to understand the structure of Earth's oceanic crust is flawed and geoscientists will have to reconsider the correspondence between seismic data and rock units when mapping formations of young oceanic crust. The new finding alters the view of how new crust is formed at mid-ocean ridges, how heat and chemicals flow through oceanic crust and how life can exist in deep below the seafloor.
   Similar news · Read more »
   
7. Researchers locate mantle's spin transition zone, leading to clues about Earth's structure
   09-20-2007 · EurekAlert!
   Researchers have located the spin transition zone of iron in Earth's lower mantle, a discovery which has profound geophysical implications.
   Similar news · Read more »
   
8. Earth's getting 'soft' in the middle
   01-24-2008 · EurekAlert!
   A new study suggests that material in part of the lower mantle has unusual electronic characteristics that make sound propagate more slowly, suggesting that the material there is softer than previously thought. The results call into question the traditional techniques for understanding this region of the planet. The authors, including Alexander Goncharov from the Carnegie Institution's Geophysical Laboratory, present their results in the Jan. 25 issue of Science.
   Similar news · Read more »
   
9. Seismolgists get handle on heat flow deep in Earth
   11-23-2006 · EurekAlert!
   Earth's interior is not a benign world that only stores the geologic history of our planet. Geologists now see the inner Earth as a dynamic environment filled with exotic materials and substances roiling under intense heat and pressures. The latest evidence of this dynamic inner Earth is revealed in a recent series of measurements that peered deep within Earth, halfway to its center.
   Similar news · Read more »
   
10. Tectonic plates act like variable thermostat
    08-13-2007 · EurekAlert!
    PNAS study finds that heat loss from Earth's mantle is highly variable and depends on tectonic plate arrangement. Earth currently at relatively low level of heat loss.
    Similar news · Read more »