Comparative Study of Refraction Microtremor (ReMi) and Active Source Methods for Developing Low-Frequency Surface Wave Dispersion Curves
Comparative Study of Refraction Microtremor (ReMi) and Active Source Methods for Developing Low-Frequency Surface Wave Dispersion Curves
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折射微震 (ReMi) 和主动源方法绘制低频面波色散曲线的比较研究
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Jianhua Li
中科院分区：
文献类型：
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作者：
B. Rosenblad;Jianhua Li
获得高质量的色散曲线是通过表面波测量开发可靠的剪切波速度剖面的关键步骤。由于设备和空间要求有限，折射微震 (ReMi) 方法已成为确定表面波色散曲线的流行方法，并且越来越多地用于估计超出大多数活跃源范围的低频（长波长）表面波速度。作为地震工程模拟网络 (NEES) 计划的一部分，最近开发的低频场振动器使得主动生成频率低于 1 Hz 的表面波能量成为可能。本文对 ReMi 方法和主动源频率波数 (f-k) 方法（使用 NEES 振动器）进行了比较研究，用于绘制低频色散曲线。 1 Hz 地震仪线性阵列部署在密西西比海湾的八个深层土壤地点。使用两者...
Obtaining high-quality dispersion curves is a critical step in the development of reliable shear wave velocity profiles from surface wave measurements. Because of its limited equipment and space requirements, the refraction microtremor (ReMi) method has become a popular approach for determining surface wave dispersion curves, and is increasingly being used for estimating low-frequency (long wavelength) surface wave velocities that are beyond the range of most active sources. The recent development of a low-frequency field vibrator as part of the Network for Earthquake Engineering Simulation (NEES) program has made it possible to actively generate surface wave energy down to frequencies of less than 1 Hz. This paper presents a comparative study of the ReMi method and the active-source frequency-wavenumber (f‐k) method (using the NEES vibrator) for developing low-frequency dispersion curves. Linear arrays of 1-Hz seismometers were deployed at eight deep soil sites in the Mississippi Embayment. Using both am...