Geomagnetic variation anomaly on Eyre Peninsula, South Australia

Abstract

A systematic study of the coast effect in South Australia (White & Polatajko 1978, 1985: White & Hopgood 1979) revealed the existence of a conductivity anomaly on Eyre Peninsula. Significant deflections of the transfer function vectors at periods around 1 h indicated a telluric current concentration flowing SW?NE up the peninsula. This prompted a more detailed study in the southern part of the peninsula where a total of 40 magnetometer stations have been occupied with spacing as close as 5 km (White & Milligan 1984).