Evolution of TEMPEST

Abstract

Since its inception in 2000, TEMPEST, a fixed wing time domain electromagnetic (TDEM) system, has been used in mineral, environmental and groundwater exploration and regolith and salt mapping. The versatility of the system can be attributed to its broad operational bandwidth, multifaceted software approach and distinctive calibration technique which allows both early and late time ground response to be imaged. In the last decade the system has undergone a range of hardware and software developments with the aim of satisfying the changing landscape of geophysical exploration. Recent developments have resulted in improved system compensation, spatial resolution and noise levels which have helped further expand the systemâ??s applications. Forward and inverse modelling results and survey data are used to demonstrate the impact of recent developments on enhancing the systemâ??s ability in a range of geophysical environments and exploration targets.