A rock physics investigation of unconsolidated saline permafrost: P-wave properties from laboratory ultrasonic measurements

A rock physics investigation of unconsolidated saline permafrost: P-wave properties from laboratory ultrasonic measurements

Researchers at LBNL apply seismic methods to examine characteristics of saline permafrost from coastal plain, Barrow, AK.
1)The evolution of the P-wave waveforms (left panel) and the corresponding amplitude spectra (right panel) over the course of a freeze-only measurement conducted on one of the saline coarse sand samples (initial pore-water salinity = 0.6 M (35 ppt)). Relative amplitudes of the signals are preserved.