is confirmed that the earthquake in Japan may have shifted Earth's axis and accelerated This rotation
Thursday, March 24, 2011
Everything indicates that the magnitude 9.0 earthquake that erupted March 11 in Japan may have shortened the length of Earth day (understood as it takes the Earth to complete an accurate return on itself) and moved one of its axes. The results of these calculations show that changing the mass distribution of the Earth, the earthquake has made it turn on itself a bit faster, so that Earth's day length has been reduced by about 1.8 millionths of a second.
The calculation results also indicate that the earthquake has moved about 17 centimeters, the position of the figure axis of the Earth. This is the axis along which balances the mass of Earth, and should not be confused with the North-South axis. This
The calculation results also indicate that the earthquake has moved about 17 centimeters, the position of the figure axis of the Earth. This is the axis along which balances the mass of Earth, and should not be confused with the North-South axis. This
change in the figure axis of the Earth will wobble our world in a slightly different twist on itself as, but not cause alteration of the planet's axis in space. Only external forces, such as the gravitational pull of the sun, the moon and some planets can do that. values \u200b\u200bnow obtained by these calculations will almost certainly change when scientists have a clearer picture of the earthquake.
Gross estimates of the effects of this kind caused by the earthquake of 2010 in Chile show that the quake cut the length of day by 1.26 millionths of a second and shifted the figure axis of the Earth in about 8 inches. As for the calculations of this type for the 2004 earthquake in Sumatra-Andaman (which reached magnitude 9.1), the results indicate that day length decreased by 6.8 millionths of a second and moved the figure axis Earth in about 7 centimeters. How an earthquake affects the Earth's rotation depends on its size, the location of the epicenter, and the manner in which the fault slips.
In theory, anything that redistributes the mass of the Earth's rotation causes it to change. The way the Earth rotates on itself changes constantly, not only as a result of earthquakes but also (and indeed, mostly) as a result of the more important effects of atmospheric winds and currents in the seas. Throughout the year, the length of Earth day (understood as it takes the Earth to complete an accurate return on itself) increases and decreases by about one thousandth of a second, or 550 times more than the change caused by Japanese earthquake. The position of the figure axis of the Earth also changes steadily, by about one meter over the course of a year, or about six times more than recorded now because of the earthquake.
changes in the rotation and the figure axis of the earth caused by earthquakes do not affect us in everyday life, so that, as recommended by Gross, people should not worry about them.
http://noticiasdelaciencia.com/not/706/se_confirma_que_el_terremoto_de_japon_puede_haber_desplazado_un_eje_de_la_tierra_y_acelerado_la_rotacion_de_esta/
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