Site 4 #17 Unimproved Ground test pad crosshole tests

A 3-component receiver is pushed into ground by T-Rex at various depths to measure the ground motion from source rod. Source rod was pushed into ground by mobile CPT ramp. Note: Data is not provided in engineering units because analysis is performed using raw voltage signal to identify arrival of compression and shear waves.一台三分量检波器（3-component receiver）由T-Rex设备推入地下不同深度，以采集震源杆激发的地面振动信号。震源杆由机动静力触探（Cone Penetration Test，CPT）台车推入地下。 注：本数据集未采用工程单位进行标注，因分析过程将直接使用原始电压信号以识别压缩波与剪切波的初至时刻。