In the Physical Acoustics Laboratory (PAL), we are interested in extracting information from scattered waves in heterogeneous media. Indoors, these waves are of ultrasonic frequencies, excited and detected with lasers. Outside, our waves are in the seismic frequency band.

Seismic Station AUCK is our home-built TC1 seismometer on campus

As our wavelengths span orders of magnitudes, so do our applications. Outside, we study CO2 sequestration and geothermal exploration, as well as micro-seismicity for fluid reservoir characterization. In the laboratory, we do rock physics in collaboration with the PORO lab, ice core tomography, and medical imaging.

News & Announcements

  • Sam and Zoe are apple seismologists! Students of the PAL lab have become the first apple seismologists after publishing our paper on acoustic monitoring of apples using laser ultrasound in Postharvest Biology and Technology. This paper shows how to infer an apples firmness using elastic wave propagation, a technique developed by seismologists to interrogate the earth using earthquakes. In this ...
  • Our paper in EJP is a 2015 highlight Our paper on our home-built Laser Doppler Vibrometer, led by Sam Hitchman, was selected a European Journal of Physics Highlight of 2015. Congratulations to the team, and especially to Sam, for this honour. It is a testament of Sam’s talents that his first peer-reviewed publication was “….chosen for its outstanding quality and valuable contribution to ...
  • The PALs invade Stanford During this year’s SPIE conference in California, Jami Johnson presented work on GCLAD and her imaging efforts with our colleagues Joost van der Neut and Jeff Shragge. As you can see below,  she also managed to find some time to visit two alumni of the PAL — and Geophysics programme at UoA — at their new home ...

See previous PAL news items