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Originally posted by dallas18
reply to post by Sparkly_Eyed777
Would you say recently the number of earth quakes here have increased? I have only really paid attention to earthquakes over the past few years here as I am in my early 20s, but it does seem quite unusual recently. I am trying to find a graph of Australias history with quakes but only find this link, here, but I think that increase in the graph is probably due to the internet news boom.
As for the mining remark, quite strange indeed. But considering the size of the mining industry out there, if it was the cause.. somehow, I doubt they would admit it.
Originally posted by airvicemarshal
This is particularly serious. This is not on an obvious plate boundary.
What is going on with this world?
Originally posted by TiM3LoRd
reply to post by Thurisaz
what are you talking about melbourne has been hit by more earthquakes in 1 year than in the last 5.
Originally posted by PennyQ
Firstly, we are allowed to speculate on the usual or unusuality of earthquakes if we wish.
This is the nature of the human being, to question and hopefully be answered by someone a little more in the know than we are.
Secondly, if you don't find anything new or important in these threads then you are not reading them properly.
A 5.0 is quite important here in Australia as we don't get them very often.
Originally posted by Village Idiot
reply to post by Sparkly_Eyed777
Yes it was big, you couldn't stand, power lines were making "whipping noises" and my little Datsun 180B bounced around and, at one point, stood on two wheels!
what made things worse, what we found out months later, was there where actually 2 Earthquakes, one sparked off the other.
I don't know much about them, but apparently they travel in "waves" and we ended up with 2 crossing each other, creating a worsened affect, right underneath were we lived, well that was the "experts" comments anyway.
Interesting side note, Farmers couldn"t round up the Sheep and Cattle that morning before it happened, they were all huddled in a corner scared,
Well I never did find out the truth if the Mill contributed to it or not, only that after they changed the system (injecting water back) in 1995, no more regular Earthquakes...... coincidence?
Maybe this ties into the Mines in Kalgoorlie or not, I'm no expert.
To me, removing Geothermal "pressure" would change things underground, possibly on a large scale, were as digging holes in the ground and causing earthquakes doesn't make sense, unless the Mines collapsed.
Maybe a Member on ATS with a better understanding of Earth Science could comment here.
Originally posted by themuse
reply to post by Sparkly_Eyed777
Hey Neighbour ,
Im in Kal too and it woke me up and scared the hell outa my puppies!!. I posted about it yesterday in quake watch thread though. Quake Watch 2010 Thread
There were aftershocks last night that felt the same as our regualr quakes,
Kalgoorlie-Boulder is continuing to rattle from aftershocks, four days after a magnitude 5.0 earthquake struck the region and left buildings along Boulder's historic main street with serious structural damage.
Since the earthquake struck about 8.15am on Tuesday, with an epicentre believed to be about 10km south-west of the city, there have been three aftershocks recorded by Geoscience Australia.
Last night, a 2.8 magnitude quake struck south of Kalgoorlie just before midnight, following a 2.6 magnitude quake in Kalgoorlie itself about 6am.
About 2am on April 21, a 2.6 magnitude quake was recorded south of Kalgoorlie.
Originally posted by Dr Conspire
I escaped being buried alive and instantly I guess crushed to death by eight seconds when an already mined section of mine collapsed after we walked past the point of collapse.
My point is when you remove something from beneath the earth something gives.
Two years or so later after this incident the town ten kms from the mine suffered a significant easrthquake and several aftershocks, during the first earth quake I was about to descend the mine drift in a dolly car.
The crux is Mines create weaknesses in the earths upper crust.
The earthquake in Kalgoorie is due to mining.
Vic Dent is an Honorary Research Associate in geology at University of Western Australia and former seismologist with Geoscience Australia.
"Geoscience Australia and the USGS made preliminary locations of this earthquake, but the Australian centre for Geomechanics on Perth already had instruments in the area, monitoring the background activity, and have made an accurate location of the earthquake - this has since been passed on to Geoscience Australia.
The AGC location puts the earthquake under South Boulder, which explains why the damage seems to be concentrated there. The earthquake was not 10 - 20 km or more from Kalgoorlie as initially reported
The event is very close to the super pit.