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采用NOAA卫星地面长波辐射(OLR)数据资料,数据空间分辨率为1°×1°、覆盖全球共360×181个格点,时间分辨率为1 d,时间起止为1954年至今。计算了2012年6月30日新疆新源6.6级地震天体引潮力变化和OLR逐日时空演化背景图像。结果表明:1本次地震发生在天体引潮力由高峰(6月20日)→低谷(6月30日)→高峰(7月5日)的周期变化过程由低谷向高峰时段,可能显示引潮力对发震构造的作用主要表现为加速断面的滑动。2+新源6.6级地震前后,亮温区域出现:起始→加强→高峰→衰减→平静→发震→小范围增温的变化过程,即6月25日在震中东北出现小范围的亮温现象,6月26日起亮温区域范围增大,强度增强,6月28日亮温异常范围和幅度减弱,6月29日亮温异常消失。6月30日发生了新源6.6级地震。而7月1日又出现亮温,可能与6月30日的6.6级地震及其后面余震的发生有关。该过程与岩石在受力破裂过程具有相似性,即岩石挤压→岩石微破裂→岩石破裂扩展→破裂终止等。
Using NOAA satellite ground surface longwave radiation (OLR) data, the spatial resolution of the data is 1 ° × 1 °, covering a total of 360 × 181 grids with a temporal resolution of 1 day and a period of 1954 to the present. The change of celestial tide force and day-to-day OLR background image of the Xinyuan MS6.6 earthquake in Xinjiang Uygur Autonomous Region were calculated on June 30, 2012. The results show that: 1 the tide occurred in the period from trough (June 20) to trough (June 30) to the peak (July 5) The main function of the seismogenic structure is to accelerate the sliding of the section. Before and after the M6.6 Xinchuan earthquake, the bright temperature region appeared: the beginning → strengthening → the peak → decay → the calm → the seismogenic → the small-scale warming process, that is, a small range of bright temperature appeared on June 25 in the northeast of the epicenter On June 26, the range of brightness temperature increased and its intensity increased. On June 28, the range and range of brightness anomalies weakened, and the brightness temperature anomaly disappeared on June 29. June 30 occurred a magnitude 6.6 earthquake. However, the bright temperature appeared on July 1, which may be related to the magnitude 6.6 earthquake on June 30 and the aftershock behind it. The process is similar to the rock in the process of stress rupture, ie, rock extrusion → rock micro-fracture → rock fracture expansion → fracture termination.