Welcome readers to this issue’s column on geophysics applied to the environment. For this issue, I welcome Dave Allen from Groundwater Imaging (https://groundwaterimaging.com.au/) as the guest contributor. He is going to introduce many of us to a more modern world of geophysical instrumentation and, possibly more importantly, data transfer. There is a fair bit of jargon here (and more than a few abbreviations) – we have tried to explain most terms, but some you may just have to look up for yourself. Interestingly (at least to me), Dave contacted me after my article in the June 2023 issue Preview where I had skimmed this subject; he kindly offered to write some more about modern communications and GNSS. Thanks Dave!
Before we go any further, I need to correct an error that I made in the last column. In that column I incorrectly stated that Bradley Moggridge worked with the CSIRO. In fact, Bradley is an Associate Professor at the University of Canberra.