Institution: | ; CSIRO Exploration and Mining, PO Box 883, Kenmore, Qld 4069, Australia. E‐mail: ; Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA 90095–1567, USA. E‐mail: ; Department of Math and Physics, Azusa Pacific University, Azusa, CA 91702–7000, USA |