THE motion of earth’s instantaneous rotation pole with respect to the earth crust or the mean pole of the epoch is briefly referred to as the polar motion.The polar motion is mainly charac-terized by the annual and C...THE motion of earth’s instantaneous rotation pole with respect to the earth crust or the mean pole of the epoch is briefly referred to as the polar motion.The polar motion is mainly charac-terized by the annual and Chandler polar motion.With data accumulation and promotion ofthe observation accuracy after the 1980s,people have extended researches of only annual展开更多
文摘THE motion of earth’s instantaneous rotation pole with respect to the earth crust or the mean pole of the epoch is briefly referred to as the polar motion.The polar motion is mainly charac-terized by the annual and Chandler polar motion.With data accumulation and promotion ofthe observation accuracy after the 1980s,people have extended researches of only annual
