【摘要】 对2009—2010年两次日食活动期间的湖北省区域地震前兆原始观测数据进行分析,结果显示日食效应对某些前兆测项有一定影响,具体表现为:1)地磁观测到达低值时间出现于日全食开始前;2)2009年7月22日日全食和2010年1月15日日环食期间地磁观测测项分量、扰动形态变化特征不尽相同。日全食前后地磁场变化主要表现为地磁水平分量H向下跃动的起伏型变化,具有短时、较为同步的特点;而日环食发生时,地磁场的变化主要表现为地磁偏角D的趋势转折,具有趋势变化、滞后性的特点;3)日食活动对地壳形变中的固体潮线应变和倾斜量也产生短时扰动。更多还原

【Abstract】 The continuous and precise data were recorded by variety precursor instruments in the Hubei Local-Earthquake-precursor Observing System during the 2009-2010 solar eclipse.After the careful processing and analysis for observations,three significant variations all related to the solar eclipse are found.Firstly,the geomagnetic anomaly valleys appeared before the eclipse starting.Secondly,during the total and annular solar eclipse,there were some differences between geomagnetic components and between micro-changing geomagnetic anomaly phenomena.Before and after the total solar eclipse,there were clear features with short-time and synchronization on the geomagnetic horizontal component.However,during the annular solar eclipse,geomagnetic declination component shows transition-type change characteristics with trended and lagged.Thirdly,the solar eclipse made the tilt and strain of crustal deformation observations short-time pulsate.更多还原