论文部分内容阅读
较大地震的孕育过程中,一定范围内的地磁场将发生某些变化,这已被一些震例所证实。在固定台站密度较稀,特别是在具有强震背景的重点监视区,为了能在较大范围,较短时间内取得地磁场的变化信息,流动地磁测量将是一项有意义的工作。 山西省流动地磁测量始于1979年。测点主要选建在近年来地震活动性较高的一系列断陷盆地中,点距约30公里左右。断陷盆地的外围也适当地选建了一些测点,但点距较稀。1982年,为了与邻省流动地磁测量资料衔接对比,个别测点延伸到内蒙、河北、河
During the gestation of larger earthquakes, certain changes will occur to the geomagnetic field within a certain range, which has been confirmed by some earthquake examples. In the fixed station density is rare, especially in the key monitoring area with strong earthquake background, in order to be able to obtain the change information of the geomagnetic field in a relatively large area and short time, the mobile geomagnetic survey will be a meaningful work. Shanxi mobile geomagnetic survey began in 1979. The main selection point of the survey is a series of fault basin with high seismicity in recent years, with a point distance of about 30 km. The periphery of the rift basin also selected a number of appropriate measurement points, but the pitch is more dilute. In 1982, in order to contrast with the mobile geomagnetic survey data of neighboring provinces, individual measuring points extended to Inner Mongolia, Hebei and River