Melbourne earthquake

[Scott Menegon]

It was good to see AEES member Adam Pascale on ABC 7.30 last night! I've also seen our President Trevor Allen as well.

https://iview.abc.net.au/video/NC2101H151S00

I wonder if anyone has heard (or seen) any reports of damage out closer to the epicentre? I appreciate it's pretty sparsely populated out that way though (luckily). I have a friend in Mansfield and Mt Bulla, and he has reported no damage to his knowledge.

Kind regards,

Scott

[Jordan Bartlett]

Howdy All, and thank you Scott for the prompt,

 

I am now approximately 20km from the epicentre @ Enochs Point as I write this: a quick trip to check my own family cabin and there is no visible damage at any of the 15 cabins in the valley. The cabins are a mix of URM and wood structures and there were no broken windows, no visible cracks in the mortar joints and even the loose shale roadsides seem undisturbed. I saw a few dead branches at a campsite, although they could have dislodged at any time in the past month of wind events.

 

Within our cabin is a range of elements I expected to be toppled, and the only element displaced was a hand saw that was stored vertically between other tools had dropped within the pack and was facing blade upwards. I met with another couple when investigating the local cabins and they had found two food cans on the floor of their pantry.

 

I heard rumours of windows displacing at the Mansfield Courthouse, although upon calling the Shire Council reception I heard that was incorrect, was then transferred to building surveyors and they said they had no damage to their structures. I am awaiting a callback from the main surveyor, but their assets appear unaffected.

 

If anyone has anything in the region they would like me to check I’d be happy to. Visiting Woods point is a bit of an effort, but if it’s valuable I would do it tomorrow (Friday) after lunch.

 

Regards,

 

Jordan

0411 12 13 19

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[Ninis, Dee]

Hi all,

Thanks Jordan for the update from Enochs Point!

Wayne Peck from SRC has spoken to the owners of the Woods Point pub, and they also reported no damage.

Wayne is on his way up there now, to meet with colleagues from Melbourne Uni and deploy the aftershock network, so we will have more news from him, I suspect, in the coming days.

Dee

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Dee Ninis

Earthquake Geologist, Seismology Research Centre

141 Palmer Street, Richmond VIC 3121, Australia

T +61 3 8420 8998 F +61 3 8420 8900

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[da...@earthquake.net.au]

Hi all

 

Sounds like the second USGS moment tensor might be close – 21.5km

https://earthquake.usgs.gov/earthquakes/eventpage/us7000fd9v/moment-tensor

 

Will be interesting to see aftershock depths if units can be located well in that terrain.

 

Regards

David

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[Robert Koch]

Thankyou all for interesting comments on the extent of local damage being apparently low.

In regards the damaged building featured in the news broadcasts, apart from obviously the structural deficiencies likely present (eg  unsupported masonry parapet, defective masonry tie-in to the roof & cross walls), is anyone aware of any specific local geotechnical reasons that the building response might have been more extreme than elsewhere ?

Thankyou

Robert K

CaSE Design

Robert Koch

Sent from my iPhone

On 24 Sep 2021, at 11:56 am, Robert Koch <rko...@me.com> wrote:

Anne

Interesting that seems that building in Melbourne wax the main place damaged

Robert Koch

Sent from my iPhone

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From: da...@earthquake.net.au
Date: 24 September 2021 at 11:08:01 am AEST
To: aee...@googlegroups.com
Subject: RE: [aees] Melbourne earthquake
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[john.s...@sgrs.com.au]

My daughter was working from home about 400m from that building.  She reported the movement and noise, and they later scouted around her block and saw no damage. Nothing came off their shelves.  Nothing was reported amiss at my grandson’s kinder, also close to the damaged building.  I am not aware of any systematic survey of shops along Chapel Street regarding items displaced from shelves (etc).  That area was first settled more than a century ago and the heritage buildings around there show little sign of the cumulative damage & repairs that would be expected if there was a significant soft soil profile in the area.  All such observations can’t rule out a local geotechnical reason, but it seems more likely that there were some structural deficiencies in the damaged building.

 

Cheers

John Simmons

Sherwood Geotechnical and Research Services

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[geor...@bigpond.net.au]

John

 

Reminds me of the Townsville earthquake back in the late 80's I think it was.  I was woken up by the windows rattling - sounded as if someone thrown small gravel at them - but nothing else and there were few reports of significant effects except one old house that reported significant damage.  It turned out there was an old disused sewer beneath it which had collapsed, probably because it was already on the point of collapse.

 

George Walker

229/96 Village Way

Little Mountain Qld 4551  Australia

Home Phone:  +61 7 5212 6229

Mobile Phones: +61 487 403 751 / +61 488 424 689

Email: geor...@bigpond.net.au 

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