How does Earth sustain its magnetic field?
How did the chemical makeup of our planet's core shape its geologic history and habitability?
Earth Sciences
Jul 06, 2020
10
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News tagged with iron core
Mysterious deep-Earth seismic signature explained
New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. Published in Nature, the findings could have ...
Earth Sciences
Nov 22, 2017
3
139
Just what sustains Earth's magnetic field anyway?
Earth's magnetic field shields us from deadly cosmic radiation, and without it, life as we know it could not exist here. The motion of liquid iron in the planet's outer core, a phenomenon called a "geodynamo," generates the ...
Earth Sciences
Jun 01, 2016
79
1907
Apollo-era lunar seismic data yields new lunar core model
(Phys.org)—Like the solar system's telluric planets, including Earth itself, the moon's internal structure is composed of geoochemically distinct mantle, crust and core layers. The core is mostly iron; much of our understanding ...
Warming climates intensify greenhouse gas given out by oceans
Rising global temperatures could increase the amount of carbon dioxide naturally released by the world's oceans, fuelling further climate change, a study suggests.
Earth Sciences
Jun 08, 2014
54
0
Drill core evidence adds credence to iron fertilization hypothesis regarding last ice age
(Phys.org) —An international team of researchers has found evidence in drill core samples taken near Antarctica that adds credence to the iron fertilization hypothesis. In their paper published in the journal Science, the ...
NuSTAR telescope takes first peek into core of supernova
(Phys.org) —Astronomers have peered for the first time into the heart of an exploding star in the final minutes of its existence. The feat by the high-energy X-ray satellite NuSTAR provides details of the physics of the ...
Astronomy
Feb 19, 2014
32
0
Earth's core reveals an inner weakness
(Phys.org) —The word "core" conjures up an image of something strong. However, new experiments show that the iron found in the Earth's core is relatively weak. This finding is based on x-ray spectroscopy and diffraction ...
Earth Sciences
Jan 27, 2014
0
0
Scientists solve a 14,000-year-old ocean mystery
At the end of the last Ice Age, as the world began to warm, a swath of the North Pacific Ocean came to life. During a brief pulse of biological productivity 14,000 years ago, this stretch of the sea teemed with phytoplankton, ...
Earth Sciences
Jul 14, 2013
2
0
The Earth's center is 1,000 degrees hotter than previously thought
Scientists have determined the temperature near the Earth's centre to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature ...
Earth Sciences
Apr 25, 2013
41
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