Earthquakes in the Canberra Region - Geoscience Australia
Earthquakes in the Canberra Region - Geoscience Australia
Earthquakes in the Canberra Region - Geoscience Australia
- No tags were found...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Earthquakes</strong> <strong>in</strong> <strong>the</strong> <strong>Canberra</strong> <strong>Region</strong>On 6 September 1994 at 11.44 pm local time a magnitude MD 1.6 earthquake occurred atGungahl<strong>in</strong>, 10 km NNE of <strong>the</strong> <strong>Canberra</strong> GPO. The isoseismal map (compiled by MarionLeiba and Trevor Jones) is shown <strong>in</strong> Figure 9. Near <strong>the</strong> epicentre it sounded like anexplosion. It was reported felt to <strong>the</strong> west over a radius of about 12 km. There was anisolated felt report from Gordon, 31 km SSW of <strong>the</strong> epicentre.Figure 9. Isoseismal map of <strong>the</strong> magnitude MD 1.6 Gungahl<strong>in</strong> earthquake of 6 September1994. The red triangle is <strong>the</strong> epicentre. Reported MM <strong>in</strong>tensity values and isoseismalcontours are shown; <strong>in</strong>tensity values of 0 <strong>in</strong>dicate <strong>the</strong> earthquake was not felt.In 1995, two <strong>Canberra</strong> region earthquakes were felt <strong>in</strong> <strong>the</strong> ACT.The first was <strong>in</strong> <strong>the</strong> Br<strong>in</strong>dabella Range, 40 km west of <strong>the</strong> <strong>Canberra</strong> GPO. It happened at3.20 am local time on 3 January 1995 and was <strong>the</strong> largest event <strong>in</strong> n<strong>in</strong>e years with<strong>in</strong> 45 kmof <strong>the</strong> GPO. Its magnitude was ML 2.5. It was reported felt <strong>in</strong> Kambah and Curt<strong>in</strong> andheard <strong>in</strong> Watson, Lyons and Deak<strong>in</strong>.The second was at 7.10 pm local time on 10 October 1995 and its epicentre was nearBirrigai Camp and Tidb<strong>in</strong>billa Nature Reserve, 23 km SSW of <strong>the</strong> <strong>Canberra</strong> GPO. Itsmagnitude was MD 2.0, mak<strong>in</strong>g it <strong>the</strong> largest earthquake with<strong>in</strong> 25 km of <strong>the</strong> GPO s<strong>in</strong>ce<strong>the</strong> Black Mounta<strong>in</strong> earthquake <strong>in</strong> November 1985. At Birrigai Camp, it was heard as aloud explosion, felt very strongly and made th<strong>in</strong>gs rattle <strong>in</strong>side. Outside, it was felt by a11