We make inferences about the physical properties of heterogeneous media from scattered (elastic) waves. Indoors, these waves are mostly ultrasonic, excited and detected with lasers. Outside, probing waves are in the seismic frequency band.

Apple Seismology; for more info visit the publications page.

As our wavelengths span orders of magnitudes, so do our applications. Outside, targets include the Auckland Volcanic Field, geothermal exploration, and micro-seismicity for fluid reservoir characterization. In the laboratory, we do rock physics in collaboration with the PORO lab, ice physics, medical imaging.


  • Our new paper on laser ultrasonics on rocks under in situ conditions
    Today, research led by Jonathan Simpson, and co-authored by Kasper van Wijk and Ludmila Adam and Caitlin Smith, was published in Reviews of Scientific Instrumentation. The four of us are very proud of this paper, as it has taken us many years leading up to the moment where we can do rock physics under in…
  • Jonathan wins poster award at the 2019 APOS meeting
    This past week, members of the PAL participated in the 2019 APOS meeting. Jami presented her work on photoacoustic imaging through bone, and Kasper gave an overview talk on how we use waves of different length scales for applications in rocks, ice, fruit and others. Jonathan presented a poster on laboratory measurements of Alpine Fault…
  • MSNoise research summary
    Over the summer and semester 1 of 2019 I have been using MSNoise to monitor the Auckland volcanic field along with several¬† small associated investigations that followed. This page aims to provide a summary of methods, results, possible lines of enquiry for future work as well as questions that are still unanswered after this time.¬†…

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