论文部分内容阅读
广泛搜集了分布于中国大陆(除新疆、西藏外)地区的250个区域台站、200多个地震的短周期记录资料。分五个区(东北、西北、东部、西南和华南)测定了L_g波的群速度、水平向与竖直向振幅比H/Z(H取EW和NS向振幅的算术平均值)、衰减系数γ值,并确定了中国大陆地区统一m_L。震级标度(图1)。
A total of 250 regional stations distributed in mainland China (excluding Xinjiang and Tibet) and short-period records of more than 200 earthquakes were collected. The group velocity of Lg wave, the ratio of horizontal to vertical amplitude H / Z (arithmetic mean of H and EW and NS amplitude) were measured in five districts (Northeast, Northwest, East, Southwest and South China) γ value, and to determine the unified Chinese m_L. Magnitude scale (Figure 1).