英语翻译最简单的地震震源的测定,是使用地震记录仪.地震波分为体波和面波,这两种波在地壳内的传递速度是不一样的,在地震记录仪上,这两种波有一个时间差,根据时间差可以计算出震源到

Question

英语翻译
最简单的地震震源的测定,是使用地震记录仪.
地震波分为体波和面波,这两种波在地壳内的传递速度是不一样的,在地震记录仪上,这两种波有一个时间差,根据时间差可以计算出震源到地震记录仪的距离,以地震记录仪为圆心,以算出的距离为半径,在专用地图上画圆,震源就在这个圆上；
再利用设置在其他地区的地震记录仪,又可以确定一个圆,这两个圆应该有两个交点,震源的位置就在这两点之中的一个；
再利用另外设置的第三台地震记录仪,就可以确定震源的确切位置了.
也可以利用两台地震记录仪完成震源的测定：
第一台地震记录仪判定震源到地震记录仪的方向,可以在地图上画出一条直线；另外设置的一台地震记录仪亦可以画出一条直线,这两条直线的交点就是震源.
还可以利用一台地震记录仪判断震源的位置：
根据体波和面波的时间差,算出震源的距离,根据地震记录仪第一笔的笔画方向,判定震源的方向,有了方向和距离,就可以断定震源的位置.

Answer 1

The simplest earthquake source is measured using seismic data.
Seismic wave and surface waves, divided into the two waves in the earth's crust transmission speed is not the same as in the earthquake, the recorder, these two kinds of waves, a time can be calculated according to the earthquake epicenter distance, seismic data recorder to the right, calculate the distance to radius, special map in the circle in the round, source,
In other parts of the reusing Settings can be determined, and seismic data, this two circle a circle should have two intersections, source location on the two one,
Recycling also set a third seismic data, can determine the exact location of the source.
Also can use two earthquakes epicentre complete measurement data:
The earthquake source to the seismic data recorder determine the direction on the map, can draw a straight line, Another set of a seismic data also can draw a straight line, it is the source of the intersection of two lines.
Also can use a seismic data source location: judge
Based on the wave and surface waves, calculate the distance, according to the epicenter of the earthquake recorder brushstroke strokes, determine the direction of source direction, direction and distance, can judge the source.