We explore the detectability of M2 tidal tilt in the western part of the United States, using seismic velocity data from 40 stations in the EarthScope Transportable Array (TA) network. We augment these data with data from two additional stations both collocated at the Piñon Flats Observatory (PFO) in southern California (networks TA and Incorporated Research Institutions for Seismology [IRIS] International Deployment of Accelerometers [IDA]). We find a good agreement between the acceleration‐tilt derived from the TA seismic data with the theoretical model (body Earth and ocean loading for M2⁠). These results are also consistent with prior studies using borehole tiltmeters operated at PFO (Wyatt and Berger, 1980; Wyatt et al., 1982). We find statistically significant M2 tilt anomaly responses that correlate with large lateral variations in rock properties in Yellowstone National Park, which stem from volcanic sources in the region. We also examined deviations in the M2 tidal tilt mode in regions with other geological features including the Cascades volcanic range and a large plutonic body located in Idaho and eastern Oregon. Of these, only the Cascadia data show evidence of lateral variances of elastic properties, similar to that of the Yellowstone Caldera (YC). We conclude that tilt measurements from seismic noise data can successfully identify relatively large structural changes in elastic properties of the crustal Earth (e.g., the YC) and significant change in the elastic properties (e.g., Cascadia subduction zone). But, when the features are smaller and/or have a more muted variation in the elastic properties (e.g., the plutonic body in Idaho and eastern Oregon), the induced changes in the tilt values are too small to be detected using TA data.

中文翻译：

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M2潮汐倾斜来自美国西部USArray地震数据

我们使用来自EarthScope可移动阵列（TA）网络中40个站点​​的地震速度数据，探索了美国西部M2潮汐倾斜的可检测性。我们使用来自两个额外站点的数据来扩充这些数据，这两个站点都位于加利福尼亚南部的皮尼翁平地观测站（PFO）（TA网络和地震学联合研究机构[IRIS]国际加速度计[IDA]部署）。我们发现，从TA地震数据得出的加速度倾斜与理论模型（M2⁠的地壳和海洋载荷）之间有很好的一致性。这些结果也与先前在PFO上使用钻孔测斜仪进行的研究一致（Wyatt和Berger，1980； Wyatt等，1982）。我们发现具有统计学意义的M2倾斜异常响应与黄石国家公园岩石特性的大横向变化有关，这些变化源于该地区的火山源。我们还检查了M2潮汐倾斜模式在具有其他地质特征的区域中的偏差，包括Cascades火山范围和位于爱达荷州和俄勒冈州东部的大型岩体。其中，只有卡斯卡迪亚（Cascadia）数据显示出弹性特性横向变化的证据，类似于黄石破火山口（YC）。我们得出的结论是，根据地震噪声数据进行的倾斜测量可以成功地识别出地壳弹性特性（例如YC）中相对较大的结构变化以及弹性特性中的显着变化（例如Cascadia俯冲带）。但，