Our latest magnetometer array is the Earthwalker – the first in-house piece of equipment created by Earthsound Geophysics. The Earthwalker was designed, sourced and built by Earthsound’s Cian Hogan, with input and help from all staff.
Our regular multi-sensor magnetometer array uses a wheeled cart – however, due to increasing demand to undertake fieldwork in remote and challenging terrain, a more suitable and sturdy option was required. From uplands and rocky outcrops to dunefields and the inter-tidal zone, Earthsound’s new Earthwalker array allows us to carry out high-resolution GPS-acquired magnetometry no matter what the terrain.
The Earthwalker had its maiden survey at Knocknashee Hillfort, as part of the 2017 season of the Knocknashee Archaeology Project – and it was a great success! It took 8 people to transport our survey gear – 2 x GPS, 8 x ranging rods, food for the day (most important!), a metal detector, survey flags, 4 x magnetometers, an electronics box, and the Earthwalker array – to the top of the hill.
Earthsound surveyors worked together to collect data over 9 Ha of data, developing a methodology and refining the array.The Earthwalker delivered the first large scale, high-resolution assessment of the Knocknashee hillfort interior.
…and here’s our regular (wheeled) magnetometer cart: