Through the systematic analysis and contrast studies on topographical environment characteristics of these typical regions , it is found that the hydrothermal activity only occurs under the circumstance of the particular topographical environment , though it distributes widely in the tensional tectonic environment , for instance , the mid - ocean ridges , transform faults zones , back - arc spreading basins and the modern marine craters regions 通过对典型热液区地形环境特征的系统分析和对比研究发现尽管现代海底热液活动广泛分布在大洋中脊、转换断层、弧后扩张盆地等各种不同的张性构造环境及现代海底火山活动区,但也仅出现在特殊的地形环境条件下。
The contents are using fault locating algorithm based on measurement impedance to determine a fault zone of transmission line , then use wavelet transform fault locating algorithm based on current traveling wave to fix the fault position . in order to ensure both results are valid , gps is used to synchronize their hardware . 2 其主要内容是:利用所记录的工频故障信息和阻抗法粗略计算故障位置,再利用所记录的暂态行波电流精确定位故障点,二者通过gps时间同步单元进行时间同步,从根本上解决输电线路故障测距问题。