Raw Field Measurements from Garner Valley, Borrego Valley, Treasure Island, and Delaney Park Downhole Arrays, in Comprehensive Noninvasive Subsurface Testing at Four U.S. Borehole Array Sites

This experiment contains the raw, unprocessed field measurements collected during the noninvasive subsurface testing program at the (1) Garner Valley Downhole Array (GVDA), (2) Borrego Valley Downhole Array (BVDA), and (3) Treasure Island Downhole Array (TIDA) in California, and (4) Delaney Park Downhole Array (DPDA) in Alaska. At all four sites, the field testing included several active-source Multichannel Analysis of Surface Waves (MASW) tests, several passive-source Microtremor Array Measurements (MAM) tests, and many passive-source single-station measurements for horizontal-to-vertical spectral ratio (H/V) analysis. Active-source seismic refraction tests, both compressional (P-) and shear (S-) waves, were performed at some sites. In terms of data quality, all files have been trimmed to include only recorded data segments, and records that were clearly low quality have been removed. The data still contain some records with time windows affected by excessive noise or data gaps; these segments will need to be excluded during subsequent processing, either manually or using automatic window-rejection algorithms. No processing, inversion, or interpretation has been applied. Future experiments may include processed and derived data products from the same testing campaign.