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南黄海6.2级地震是近六十年来上海遭受的最强地震波及,也是1932年以来南黄海海域发生的最大地震。震后一个月内,上海地震台网共记录到584次地震,震中密集在北纬32°18′—32°44′,东经121°28′—121°55′,长30公里,宽20公里,方向北60°东的椭圆形范围内。最大地震所释放的地震能量约占整个地震序列总释放能量的89％,b值(最大拟然法)为0.67,一个月内的地震衰减系数为1.23,反映该地震属主震余震型。下面主要介绍这次地震的宏观烈度分布。
The M6.2 South Yellow Sea earthquake was the strongest earthquake that Shanghai suffered in nearly six decades and the largest earthquake in the southern Yellow Sea since 1932. Within a month after the earthquake, a total of 584 earthquakes were recorded by the Shanghai Seismological Bureau. The epicenter was intensively located between 32 ° 18’-32 ° 44’N and 121 ° 28’-121 ° 55’E, with a length of 30 km and a width of 20 km. Direction north 60 ° east oval range. The seismic energy released by the largest earthquakes accounts for about 89% of the total energy released by the whole earthquake sequence. The b value (the maximum quasi-law) is 0.67, and the seismic attenuation coefficient within a month is 1.23, indicating that the earthquake belongs to the main shock type. The following describes the macro-intensity distribution of the earthquake.