Muswellbrook earthquake information by Geoscience Australia - Newcastle Herald - August 23, 2024 - video Dailymotion

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Watch Muswellbrook earthquake information by Geoscience Australia - Newcastle Herald - August 23, 2024 - Newcastle Herald on Dailymotion

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00:00Dr. Hadi Ghassemi, Senior Seismologist at Geoscience Australia.

00:13And why are we here today?

00:16The Magnitude 5 earthquake in Musselbrook region that happened around noon today.

00:23Actually we received a significant number of more than 1,600 field reports so far and

00:28it is increasing as we speak and I have seen even field reports from Wollongong region

00:34which is a couple of hundred kilometers south of the epicenter area.

00:39So far after the main shock itself we have registered more than two aftershocks.

00:45The first one was a magnitude 3.3 I believe and the second one that was followed was a

00:50magnitude 2.9.

00:52And there is always a possibility that aftershocks would continue for the weeks to come, but

00:58as a general rule of thumb the larger aftershocks tend to occur at the early stages of the earthquake

01:06main shock aftershock sequence and the frequency starts to decay as the time goes by.

01:13It happened 10 kilometers from the Mount Arthur Coal Mine site, is this activity linked to the mine?

01:18It is not unusual for the earthquakes to occur close to the mines because the mines are actually

01:23located close to the fault lines and the fault lines provide the passage for the fluids

01:28to go through them and deposit valuable minerals, but the same process can actually increase

01:34the likelihood of earthquake occurrence.

01:39So if someone feels an earthquake shaking the best advice would be to drop the cover

01:45and hold on to it, so you should drop to your knees and then try to take cover under sturdy

01:50objects like tables and hold on to it until the shake completely passes.

01:56I actually looked at the historical seismicity of the region, I just looked at the past 20 years

02:03in the 100 kilometer radius of the recent event, there are more than 150 events over the past 20 years.

02:10This one was of course the largest one, but we had also a magnitude I think 4.4 in 2019.

02:16Denman has reported four quakes in the last four years, does that make it a hot spot?

02:23Not necessarily, because as I just mentioned this region is not alien to the earthquakes,

02:29so we have earthquakes in this region, but most of the time those earthquakes are in

02:34a moderate to small sized events.

02:39So if the people feel an earthquake they can go to earthquakes at the GA website and there

02:45is a button there so they can go and register their health reports.

02:53Where is Newcastle, so Ali you know better than me.

02:55So Newcastle...

02:57You need the red circle, if you didn't know, and the triangles, what are they?

03:02Those are the states, yes.

03:04Why wouldn't there be a tsunami?

03:06Tsunami?

03:07Yeah, it's quite likely.

03:08I said oh no, that's happening again and then I just rang, yeah.

03:13Reports by any chance, have you noticed any?

03:162,324.

03:17Wow.

03:182,336.

03:22And I think given the proximity to mines, they're probably temporarily closed.

03:27I'm sure they'll be inspected to make sure they're safe, you think?

03:30Do they have regulations?

03:31I'm sure they would.

03:32Interesting.

03:33Well, we can have a look at it.

03:35Oh, no, they're not going to.

03:36No, you can't.

03:37Oh, you can actually.

03:38Yeah.

03:42Oh, so...

03:51Yeah.

03:52Yeah.

03:53Yeah.

03:54Yeah.

03:55Yeah.

03:56Yeah.

Muswellbrook earthquake information by Geoscience Australia - Newcastle Herald - August 23, 2024

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