Smiley face on front of AEM survey equipment southern Wisconsin 2022
Smiley face on front of AEM survey equipment southern Wisconsin 2022Smiley face on front of electromagnetic (AEM) survey equipment at AEM survey in southwest Wisconsin 2022. In March 2022, a helicopter carried an airborne electromagnetic induction sensor over parts of southeast and southwest Wisconsin as part of a USGS study to map the aquifers in the region.