采用三段几何衰减模型拟合，得到了广东地区的几何衰减函数。
Assuming a trilinear geometrical spreading model, we obtained the attenuation function in Guangdong region.
中小地震的震源谱可以用“布龙”理论模型表示，传播路径中的几何衰减因子可以用三段几何衰减模型表示。
The source spectrum of small-moderate earthquake can be represented by theoretical "Brune" model, the geometric attenuation factor of whole path can be represented by three-segment geometric model.
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