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1980年4月德意志联邦共和国在格雷芬堡(Grfenberg)地区建成了一个宽频带地震台阵,以高分辨率、大动态范围来记录研究地震波的细结构。台阵呈反 L 形,长度约80公里,共13个子台,组成三个子台阵。子台阵装置单分向地震计,而子台阵中心则装置三分向地震计。单台用来减小台阵的旁瓣效应。分布间隔为10～12公里。该台阵通过专门设计来压低在中频范围(0.05～0.5赫兹)内以地震面波速度传播的相干地震噪声。采用瑞士产长周期地震计,其输出在子台上以每秒20个样本的速率数字化,用电话电缆以异步方式传送到子台阵
In April 1980, the Federal Republic of Germany built a broadband seismic array in the Grfenberg region to record the fine structure of seismic waves in high-resolution, large dynamic range. Array was anti-L-shaped, about 80 km in length, a total of 13 sub-Taiwan, composed of three sub-array. The sub-array device is a monolithic seismometer, while the sub-array center is equipped with a three-directional seismometer. Single use to reduce the side-lobe array effect. Distribution interval of 10 to 12 km. The array is specifically designed to suppress coherent seismic noise that travels at a seismic facewave velocity in the mid-frequency range (0.05 to 0.5 Hz). Using a Swiss-made long-period seismometer, the output is digitized at a sub-station at a rate of 20 samples per second and transmitted asynchronously to sub-arrays using telephone cables