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引言震兆异常系指震前发生的一切异常变化。它包含的内容是多方面的,且与地震的发生有着直接的内在联系。以往的研究虽然已取得较大的进展,但将其应用于地震预报的成效方面,至今尚存在着不少问题,例如,如何提高对临震异常的鉴别和进行可靠的预报;如何准确地预示地震发生的确切地点和时间等。这些问题直接涉及到震兆异常对即将发生地震进行预报的正确性及其应用的实际价值。本文主要对1982年下半年华北以南地区的地震事件的震兆异常变化进行综合研究,并将结果分述于下。
Introduction Seismogram abnormality refers to all abnormal changes that occur before the earthquake. It contains a wide range of content, and is directly related to the occurrence of the earthquake. Although great progress has been made in previous studies, there are still many problems to be applied to the effectiveness of earthquake prediction, for example, how to improve the identification of quake-induced anomalies and reliable forecasting; and how to accurately predict The exact location and time of the earthquake. These problems are directly related to the correctness of the earthquake anomaly prediction of the imminent earthquake and the actual value of its application. In this paper, we mainly study the anomalous change of the earthquake-induced anomalies of earthquakes in the area south of North China in the second half of 1982 and divide the results into the following sections.