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In the past decade Chinese scientists have predicted probability of and size for major earthquakes with a magnitude 7.0 or higher. In a constant search for abnormalities in gravitational waves, which could be warning signs of an impending earthquake (a guest article), they utilize high-precision equipment to monitor the Earth’s gravity field at low frequencies.
Their technique has shown good results in anticipating some aspects of earthquakes, but the exact location is difficult to determine. The earthquake that struck Gansu has made it clear the advancement of technology for early prediction of major quakes is still far away.
Scientists in China say that they received signals of an impending quake hours before the 6.2 magnitude earthquake which struck Gansu province recently. Scientists in the province of Shaanxi have come up with a method to predict earthquakes measuring at least 7.0 on the Richter scale.
At present they observe the Earth’s gravitational field at low frequencies by means of high-precision equipment, looking for anomalies that might be precursors. Scientists could also predict when the earthquake was most likely to strike, and how big it would be-but not absolutely where.
Hours before the recent 6.2-magnitude earthquake in Gansu, Chinese scientists say they received a menacing message from space, but experts question whether anything can be done to stop such catastrophes. Researchers in Shaanxi province have devised a method that can forecast earthquakes of magnitude 7.0 or higher, even though they cannot locate the place where it will take place.
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The method is to observe the Earth’s low-frequency gravitational field with high-precision instruments to find anomalies in gravity waves. Before the latest quake, when scientists received a text message alerting them there had been anomalous readings from multiple sensors, they used those data to estimate its probability of occurrence and approximate time. The estimated size was between 7 and 8 on the Richter scale.
Hours before the recent 6.2 magnitude earthquake in Gansu, Chinese scientists say they picked up an ominous signal. And a technique developed by researchers in Shaanxi province can forecast earthquakes of 7.0 or greater magnitudes, even if the exact area is hard to define.
This technique involves measuring the Earth’s gravitational field with high-precision equipment at low frequencies, detecting disturbances in gravitational waves. Before the latest earthquake, scientists were first alerted to abnormal data readings from a number of sensors in text form. After analysing this information they predicted that an event with such and such magnitude was likely to take place soon at around time X.
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