In support of QuakeCoRE research, this page provides guidelines and procedures to conduct field testing and develop high-quality datasets in line with Tech Platform 2 objectives. These guidelines are organized by testing method.

Ambient Vibration H/V Spectral Ratio (HVSR) Testing

The horizontal-to-vertical spectral spectral ratio (also called H/V, or HVSR) testing method is a simple seismic geophysical testing method aimed at the characterization of site period, using the passive measurement of ambient vibrations. This method is well suited for testing at sites with a strong impendence contrast(s) (e.g., a soft soil deposit overlying a stiff rock) and sites with limited space/access needed for more extensive testing. The test involves the placement of a single three-component sensor and data logger, which allows for rapid deployment and a quick, first level assessment of site characteristics.

Guideline Documents:

Procedure HVSR Fieldwork (Download PDF)

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• • Recommended HVSR datasheet for use in the field to record and track important testing details and aid in the development of metadata descriptions.

Processing Tools and Software:

Miniseed Data File Pre-processing Scripts

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