The Field Geology Club of South Australia presents:
Thursday 1st September 2022 at 7:45
CAN EAST AND WEST SEE EYE TO EYE?
Mawson Lecture Theatre
Department of Earth Sciences
North Terrace Campus
University of Adelaide
Seismological Association of Australia
While science and seismology advance, there are still differences that seem to be ingrained, stopping us seeing things from another point of view. While I am asked regularly about fault lines, we have yet to find in Australia one geologically mapped fault that has earthquakes occurring along it. When it comes to earthquake hazard, most engineers and regulators like smoothed maps without sharp changes, but seismologists like their favourite bullseye. However there is a model of earthquake occurrence that is just in the development stage in Western Australia that looks more like chicken pox. Will it turn out to be useful? When it comes to recording across Australia, there has been a tendency to spread recorders out in a grid fashion to measure systematically, and model deep structure. On the other hand, there is the storm chaser, always wanting to get his recorders right on top of the action. He wants to know about the earthquake.
We will look at these divergent views, and also some earthquakes during the last year from east and west: Woods Point (Vic) ML5.9, Murrayville-Pinnaroo ML5.1, Mount Barker ML3.7 and Arthur River, WA ML4.8. The quest to learn more continues.
David Love studied at the University of Adelaide, gaining a BSc Hons in Geophysics. He began working with the SA Dept of Mines in 1980, working in gravity and magnetics. He was shifted to earthquake monitoring in 1986 'until an expert was appointed'. He was involved in Australian Standards for earthquakes from 1988 to 2007. He continued monitoring until the state government network was closed in 2017, and the Seismological Association of Australia formed. He now continues monitoring with the SAA.
If the door to the Mawson Building is closed, ring the FGC doorbell to left of the door for admittance. Note that the doorbell will be removed at 8.00 pm in order not to interrupt the lecture.
Wearing of a mask is recommended
Refreshments will be served in the tea room following the meeting.
Zoom link: https://adelaide.zoom.us/j/89039776109?pwd=cFQ5TDVlMkdPR1JXSWtSVHpqMktuZz09
Please be warned that there is no wheelchair access to the lecture theatre.