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利用地震仪最大记录振幅测定近震震级,是里克特在美国南加里福尼亚建立原始震标度时最早采用的方法。尽管这种方法对于近代要求更精确地测定震级有不足之处,但由于它具有方便易行的优点,多少年来仍一直为我国以及其它许多国家和地区广泛采用着。为了研究我国各区域性的近震震级,并确立新的或其它震级标度与传统震级标度之间的关系,都有必要对最大震相测定近震震级的方法作进一步的研究。
The use of the seismograph’s maximum recorded amplitude to determine near-Earthquake magnitude is the earliest method Reichetter used to establish the original seismic scale in Southern California, USA. Although this method has some shortcomings for the more accurate determination of earthquake magnitude in modern times, it has been widely used in our country and many other countries and regions for many years because of its advantages of being convenient and easy to operate. In order to study the regional magnitude of near earthquakes in our country and to establish the relationship between new or other magnitude scales and traditional magnitude scales, it is necessary to further study the method of near-epicenter magnitude determination of the largest phase.