4:45 PM
Post-glacial rebound is the turning effect of the solid surface of the earth against the loss of glaciers and loss of weight. With reduced at the end of ice age glaciers, the land beneath the ice began to rise and continue rising. For that, as expected, a dense layer on the surface will move north as the effect of the mass center of the planet.
When calculating these changes, scientists are combining the gravity data from NASA satellites and German Aerospace Center Gravity Recovery and Climate Experiment (GRACE), which measures the movement of the earth's surface via GPS and a model developed by the Jet Propulsion Laboratory (JPL) NASA's ocean mass estimates in for every point on the ocean floor.
Wu Xiaoping, a researcher JPL in Pasadena, California estimates, the main cause is a shift in the earth's surface due to melting of the Laurentide ice sheet, which blanketed much of northern Canada and the United States in the last ice age.
"The new findings were much larger than previous estimates that only 0.019 inches or 0.48 millimeters per year," Wu said, as quoted by LiveScience, 28 September 2010.
Even so, Wu said, the movement towards the top surface will not affect life on earth. "The shift is less than one millimeter per year, so it has no effect," said Wu. "Unlike the case if the shift is 1 centimeter. It will bring significant changes, "he said.
Although the movement of the plates does not affect the daily lives of human beings, this shift will affect the tracking of satellites and spacecraft. "Seatelit in orbit on the record information from space and correspond with the existing instruments on the surface of the earth," said Wu. "This movement will have an effect on how we keep track of the aircraft or satellites," he said.
Recent reports about a shift in the Earth's surface is made by researchers from JPL, Delft University of Technology in the Netherlands, and Netherlands Institute for Space Research. The results were published in the journal Nature Geoscience this month's issue.
Moving The Earth's surface to the North
As you read this article, the surface of the earth beneath you move slowly toward the north pole. According to some scientists, this shift is greater than they anticipated. However, beyond minor effects on satellites, there are no significant effects will be felt.
Researchers found that shifting water masses around the world, combined with what is called post-glacial rebound, has shifted the earth's surface from its center as much as 0.035 inches or 0.88 millimeters per year toward the north pole.
Post-glacial rebound is the turning effect of the solid surface of the earth against the loss of glaciers and loss of weight. With reduced at the end of ice age glaciers, the land beneath the ice began to rise and continue rising. For that, as expected, a dense layer on the surface will move north as the effect of the mass center of the planet.
When calculating these changes, scientists are combining the gravity data from NASA satellites and German Aerospace Center Gravity Recovery and Climate Experiment (GRACE), which measures the movement of the earth's surface via GPS and a model developed by the Jet Propulsion Laboratory (JPL) NASA's ocean mass estimates in for every point on the ocean floor.
Wu Xiaoping, a researcher JPL in Pasadena, California estimates, the main cause is a shift in the earth's surface due to melting of the Laurentide ice sheet, which blanketed much of northern Canada and the United States in the last ice age.
"The new findings were much larger than previous estimates that only 0.019 inches or 0.48 millimeters per year," Wu said, as quoted by LiveScience, 28 September 2010.
Even so, Wu said, the movement towards the top surface will not affect life on earth. "The shift is less than one millimeter per year, so it has no effect," said Wu. "Unlike the case if the shift is 1 centimeter. It will bring significant changes, "he said.
Although the movement of the plates does not affect the daily lives of human beings, this shift will affect the tracking of satellites and spacecraft. "Seatelit in orbit on the record information from space and correspond with the existing instruments on the surface of the earth," said Wu. "This movement will have an effect on how we keep track of the aircraft or satellites," he said.
Recent reports about a shift in the Earth's surface is made by researchers from JPL, Delft University of Technology in the Netherlands, and Netherlands Institute for Space Research. The results were published in the journal Nature Geoscience this month's issue.
Subscribe to:
Post Comments (Atom)
0 Responses to “Moving The Earth's surface to the North”
Post a Comment