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It is not known what, exactly, caused the Newcastle earthquake of 1989.
Originally, investigations following the earthquake suggested that it was triggered by 200 years of underground coal mining. Geoscientists from Columbia University claimed that removal of 500 mega tonnes of coal and 2000 mega tonnes of water removed from the ground reactivated a major faultline underneath the Newcastle's coalfields. Removal of millions of tonnes of coal, and the pumping out of water needed in the mining process, created enough stress to reactivate a fault line beneath the Newcastle coal fields.
However, a 2007 report cast doubts on this theory, which came from a US report. Australian geoscientists believe more factors were involved, as evidenced by the fact that minor earthquakes have occurred in the Hunter Valley coal mining region from time to time, and not necessarily close to the coal mining sites. The epicentre of the quake was simply too far underground to have been caused by coal mining alone.
For more details on possible causes of the Newcastle earthquake, see the link below.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoOriginally, it was proposed that there was little reason to believe that natural processes caused the Newcastle earthquake. Investigations following the earthquake suggested that it was triggered by 200 years of underground coal mining. Geoscientists from Columbia University claimed that removal of 500 mega tonnes of coal and 2000 mega tonnes of water removed from the ground reactivated a major faultline underneath the Newcastle's coalfields. Removal of millions of tonnes of coal, and the pumping out of water needed in the mining process, created enough stress to reactivate a fault line beneath the Newcastle coal fields.
However, a 2007 report cast doubts on this theory, which came from a US report. Australian geoscientists believe more factors were involved, as evidenced by the fact that minor earthquakes have occurred in the Hunter Valley coal mining region from time to time, and not necessarily close to the coal mining sites. The epicentre of the quake was simply too far underground to have been caused by coal mining alone.
Wiki User
∙ 14y agoThere have been many earthquakes in Australia History. Two noticable earthquakes are:-
- On April 29th, 1941 the town of Meeberrie, Western Australia felt Australia's biggest onshore earthquake at mag 7.2.
- On November 19th, 1906 a large magnitude 7.6 earthquake hit the Indian ocean off the coast of Western Australia. It is the largest in Australian Territory.
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Have there been any earthquakes in Australia?
Yes. Most earthquakes in Australia occur deep underground and are not felt by the residents many kilometres above the hypocentre. Earthquakes are common around Melbourne in Victoria but to date none have caused much more than a few trembles on the surface.Times and places where significant earthquakes have occurred in Australia include:An earthquake measuring 7.2 on the Richter scale hit Meeberrie, Western Australia, on 29 April 1941. It left massive cracks in all the walls of Meeberrie homestead.On 14 October 1968, the town of Meckering, Western Australia, was hit by an earthquake which registered 6.9 on the Richter scale. No-one was killed, but an estimated $2.2 million worth of damage was caused, and 17 people injured.On 22 January 1988, three large earthquakes were felt in Tennant Creek, in the Northern Territory. The smallest occurred at 10:06am and registered 6.3 on the Richter Scale, whilst the largest occurred at 9:35pm, registering 6.7.Australia's worst earthquake disaster occurred on 28 December 1989 in Newcastle, NSW, when an earthquake measuring 5.6 on the Richter scale hit, causing massive damage and thirteen deaths.
What biome do earthquakes occur in?
The lithosphere is where earthquakes occur.
What are three plate motions that can cause earthquakes?
Any and all plate motion causes earthquakes.
Why is Australia considered to have a slight earthquake risk?
Australia is right in the middle of one of the great shields that make up the land surface of the earth. all the movement is outside the country so any earthquakes we get are usually not very big or long. the land is nice and solid.
How many earthquakes will happen?
That's impossible to answer with any sort of accuracy. Most earthquakes have one major event and numerous aftershocks.
Where is a modeling school in Newcastle Australia?
I doubt there are any modeling schools in Newcastle but here is a link to modeling schools in Australia. You may be able to find one close to you: http://www.startlocal.com.au/education/modelling/
Did Australia receive more earthquakes than any other country?
No
In this northeastern region of australia there have been no volcanoes or earthquakes?
There have not been any eruptions though rare earthquakes have occurred before.
Is there any nursing school in Newcastle?
newcastle college or newcastle university?
Why does the Australian continent has very few earthquakes?
Australia isnt on the edge of any tectonic plates
Have you had any earthquakes in Queensland?
There have been no earthquakes felt in Queensland since the start of European settlement. Australia has far fewer earthquakes than most other parts of the world. Australia has about 1 earthquake every 5 five years, compared to the world average of around 140 per year.
Can you buy Hannah Montana tickets for any events in Newcastle sunderland?
can you buy tickets for any events in newcastle sunderland?
Did England have any other colonies besides England?
Yes, in India, the Americas, Australia, New Zealand, and Singapore.
Do Subway employees in Australia receive a penalty rate on a public holiday?
My Subway In Newcastle NSW does not give Penalty rates on public holidays or any other time.
Have there been any earthquakes in Australia?
Yes. Most earthquakes in Australia occur deep underground and are not felt by the residents many kilometres above the hypocentre. Earthquakes are common around Melbourne in Victoria but to date none have caused much more than a few trembles on the surface.Times and places where significant earthquakes have occurred in Australia include:An earthquake measuring 7.2 on the Richter scale hit Meeberrie, Western Australia, on 29 April 1941. It left massive cracks in all the walls of Meeberrie homestead.On 14 October 1968, the town of Meckering, Western Australia, was hit by an earthquake which registered 6.9 on the Richter scale. No-one was killed, but an estimated $2.2 million worth of damage was caused, and 17 people injured.On 22 January 1988, three large earthquakes were felt in Tennant Creek, in the Northern Territory. The smallest occurred at 10:06am and registered 6.3 on the Richter Scale, whilst the largest occurred at 9:35pm, registering 6.7.Australia's worst earthquake disaster occurred on 28 December 1989 in Newcastle, NSW, when an earthquake measuring 5.6 on the Richter scale hit, causing massive damage and thirteen deaths.
Are there any volcanoes or earthquakes in Iraq?
Iraq experiences earthquakes but does not have any volcanoes.
Are any earthquakes on Venus's?
there is no core on Venus causing there to be no earthquakes on Venus
