geophysics
Geophysics /dÊiËoÊfɪzɪks/ is the physics of the Earth and its environment in space; also the study of the Earth using quantitative physical methods. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation.[1] However, modern geophysics organizations use a broader definition that includes the hydrological cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.[1][2][3]
For more information about geophysics check the Wikipedia article here
ZME Science posts about geophysics
Scientists at Scripps Institution of Oceanography at UC San Diego have found a layer of liquefied molten rock in Earth’s mantle that may be acting as a lubricant for the sliding motions of the planet’s tectonic plates. This discovery has very far reaching implications, which can solve some of the long standing geological puzzles, as [...]
Evidence of drowned remnants of an ancient microcontinent have been found in sand grains from the beaches of a small Indian Ocean island, according to a new research. Zircons and volcanoes This evidence was found in Mauritius, a volcanic island 900 kilometres east of Madagascar which serves as an exotic destination for many tourists. Basaltic [...]
The past few years have been marked by numerous seismic events, some of dramatic magnitude; aside from the huge 9.1 temblor in Japan, the world was also shocked by the pair of massive earthquakes that rocked the Indian Ocean on 11 April 2012. However, as geophysicists warn, this may only be the beginning – the [...]
Planetary scientist Kelsi Singer initially studied satellite photographs of Saturn’s icy moon Iapetus‘ surface looking for stress fractures in the moon’s ice, what she found in process however was far more interesting. Huge landslides, stretching across tens of miles across the moon’s surface were observed, not in one, but multiple locations, hinting this is a common phenomenon [...]
Scientists at MIT, Brown University, and NASA’s Goddard Space Flight Center may have come across an incredible discovery, after data from the Lunar Reconnaissance Orbiter (LRO), a spacecraft which orbits the Moon from pole to pole, suggests water ice might be present inside a massive crater, called the Shackleton crater. The researchers used the spacecraft’s laser altimeter to illuminate the crater’s interior with [...]
The Yellowstone super volcano, which basically outlines the whole Yellowstone National Park, is part of one of the most active volcanic regions in the world. A recent research conducted by a joint team of international scientists from Washington State University and the Scottish Universities Environmental Research Centre is set to cast doubts on the frequency of eruptions and, most importantly, super eruptions [...]
The human brain is wired to see all kinds of patterns in various shapes. The most common one is that of the human face, most often encountered in our day to day lives, be it in the coffee, a fire hidrant or a cut off potato (I saw Jesus!). The moon makes no exception either. [...]
Scientists from China, US and Mexico have used light detection and ranging laser altimetry (LiDAR) to study how an earthquake can change the surrounding landscape. Using this technique, the researchers were able to establish with high accuracy where the Earth’s crust ruptured. If the same technique were to be established around all major high-risk areas for earthquake, [...]
Yesterday, NASA held a press briefing where scientists involved in a recently published study, of intense consequences to the scientific community, and people looking for signs of extraterestrial life alike, discussed how Jupiter’s icy satellite has great chances of fostering life in the warm oceans beneath its surface. Europa’s surface is covered in a [...]
Yellowstone is without a doubt one of the most fascinating places on the face of the planet. But it doesn’t only attract families or people who want to relax, but it attracts scientists as well, and among them, geologists and geophysicists hold a top spot. University of Utah researchers made the first large-scale picture of [...]
It’s been quite a while since we published anything about the Cassini mission, but that doesn’t mean it hasn’t been active. The information it keeps sending back to Earth is priceless, and at some points, totally surprising. This was also the case of the Saturn Moon Enceladus, which appears to give out much more heat [...]
We probably all know (especially thanks to the abundancy of TV series) what Crime Scene Investigators (CSI) are. Probably not so many people know exactly what geophysics is. As the name says it (geo=earth), geophysics studies the phyisical properties of the Earth, such as gravity, electromagnetism, plate tectonics, and extremely numerous other ones; it is [...]
The geek inside was nagging me for quite a while to make a category like this. So, starting today, every Wednesday I’ll be adding an awesome geological picture, along with some short explanation of what’s happening. Would really like some feedback on this, your opinions are appreciated as always. The picture shows a sandstone formation [...]
The next step in prospecting and mining has always been a subject of speculation and theories, ever since the days of Jules Verne. For decades, an idea that flourished more and more was to gather up potato-sized magnanese nodules, rich in nickel, cobalt and manganese, that are very valuable in large quantities. The problem is [...]
Storm elves and sprites are electric luminous fleeting phenomena that sometimes naturally occur in the upper atmosphere. A team of Spanish researchers managed to make a high speed recording of the phenomena and publish it in the Journal of Geophysical Research. Practically, sprites are electrical discharges shaped like a carrot or a column that form [...]
There are many things we have yet to find out about Saturn, but the Cassini probe has definitely shed some light on the planet, and will surely do the same in the following years. The most recent flyby showed a significant number of geysers just waiting to pop out from under the surface – even [...]
If a gate to hell existed, I bet this is how it would look like. Locals from the town of Darvaz in Uzbekistan were really inspired when they named it this way. When looking at the pictures, you’d be tempted to think this is some sort of a volcano, but it’s not. Geologists are actually [...]
Scientists have for the first time determined the actual permeability of the asthenosphere in Earth’s upper mantle, which is basically responsible for how fast the melt rises towards the surface of the earth, and the results were surprising to say the least. Researchers found that it actually moves 25 times faster than previously assumed, which [...]
Boy 2009 passed quite quickly, but it didn’t go without a blast, that’s for sure ! I’m gonna show you some really amazing stuff that happened during 2009, most of which you probably have no idea of, and this is the first one from that series. 4th place (honorable mention): Mayon, Philippines It may have [...]
Evolution isn’t just for living organisms, as scientists the Carnegie Institution found. They found that more than 3000 of the 4000+ minerals that exist can be linked more or less directly to biological life. This finding could have a crucial importance for scientists that are searching for life on other planets. Robert Hazen and Dominic [...]
Thu, Mar 21, 2013
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