Earthquakes in the Canberra Region - Geoscience Australia
Earthquakes in the Canberra Region - Geoscience Australia
Earthquakes in the Canberra Region - Geoscience Australia
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<strong>Earthquakes</strong> <strong>in</strong> <strong>the</strong> <strong>Canberra</strong> <strong>Region</strong>CONTENTSINTRODUCTION .................................................................................................................................. 1REGIONAL SETTING .......................................................................................................................... 1GEOLOGY OF THE CANBERRA REGION........................................................................................ 2LOCAL CANBERRA EARTHQUAKES.............................................................................................. 3Largest earthquakes with<strong>in</strong> 20 km of <strong>Canberra</strong> GPO.......................................................................... 5Frequency of occurrence of earthquakes with<strong>in</strong> 20 km of <strong>Canberra</strong> GPO.......................................... 6Heard or felt earthquakes, 1982 - 1995............................................................................................... 6Heard or felt earthquakes, January 1996 – November 2007.............................................................. 12<strong>Earthquakes</strong> <strong>in</strong> <strong>the</strong> Sutton area, January 1996 – November 2007 ..................................................... 17EARTHQUAKES ON THE LAKE GEORGE FAULT....................................................................... 18MURRUMBATEMAN EARTHQUAKES .......................................................................................... 20DALTON-GUNNING EARTHQUAKES AND THEIR EFFECT ON CANBERRA......................... 22CANBERRA EARTHQUAKE HAZARD........................................................................................... 26EARTHQUAKE FREQUENCY IN THE CANBERRA 1:100 000 MAP SHEET.............................. 27REFERENCES ..................................................................................................................................... 27APPENDIX 1: MODIFIED MERCALLI (MM) SCALE OF EARTHQUAKE INTENSITY ........... 29APPENDIX 2: EARTHQUAKE ACTION GUIDE............................................................................. 31iii
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