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Miscellaneous microtremor array datasets from the Puget Lowland, Washington State

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-06-27T00:00:00Z
The datasets for this investigation consist of microtremor array data collected in three regions of the Puget Lowland, Washington State: 1) western Seattle and Tacoma basins (7 sites), 2) Seattle basin and uplift (17 sites), and 3) Tacoma basin (20 sites).Dataset 1 was acquired with Trillium Compact 20 s-100 Hz three-component (3C) sensors deployed in a ten-sensor nested triangular array with non-uniform sensor spacing; inter-sensor distances ranged from ~57 to ~1000 m. Dataset 2 was acquired with four-sensor triangular arrays with Guralp CMG-40T 3C sensors having flat response from 0.033 Hz to 50 Hz; inter-sensor distances ranged from ~19 to ~300 m. Dataset 3 was acquired with Trillium Compact 3C sensors, as used for dataset 1, deployed in a ten-sensor nested triangular array with uniform sensor spacing; inter-sensor distances ranged from ~19 to ~300 m. Datasets 1 and 3 were recorded on RefTek RT-130 data loggers whereas dataset 2 was recorded on Kinemetrics K2 data loggers. All data are archived as GNU-zipped tar files in binary SAC format.

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