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Tsunami Warning  
User currently offlineQANTAS077 From Australia, joined Jan 2004, 5850 posts, RR: 40
Posted (6 years 10 months 3 weeks 3 days 6 hours ago) and read 1103 times:

a massive 7.9 earthquake has hit Indonesia, Tsunami warning is out for the region and NW Western Australia.

http://www.cnn.com/2007/WORLD/asiapcf/09/12/indonesia.quake/index.html


a true friend is someone who sees the pain in your eyes, while everyone else believes the smile on your face.
15 replies: All unread, jump to last
 
User currently offlineAirTranTUS From , joined Dec 1969, posts, RR:
Reply 1, posted (6 years 10 months 3 weeks 3 days 6 hours ago) and read 1084 times:

CNN now says tsunami warning now lifted.

User currently offlineMadameConcorde From San Marino, joined Feb 2007, 10893 posts, RR: 37
Reply 2, posted (6 years 10 months 3 weeks 3 days 6 hours ago) and read 1077 times:

A hell of a powerful earthquake indeed. 7.9 Richter Scale is no joke.
There must be a lot of casualties. There will probably be aftershocks.  Sad


http://news.bbc.co.uk/2/hi/asia-pacific/6991134.stm

A powerful earthquake has struck off the western Indonesian island of Sumatra, sparking fears of a tsunami.
Alerts were issued for many Indian Ocean nations after the 7.9 quake, though Indonesia's has now been lifted.
...
Wednesday's earthquake struck at 1810 (1110 GMT), about 15km (nine miles) under the sea, some 100km (60 miles) south-west of the city of Bengkulu, the US Geological Survey said.



There was a better way to fly it was called Concorde
User currently offlineBaroque From Australia, joined Apr 2006, 15380 posts, RR: 59
Reply 3, posted (6 years 10 months 3 weeks 3 days 6 hours ago) and read 1067 times:

Quoting QANTAS077 (Thread starter):
a massive 7.9 earthquake has hit Indonesia, Tsunami warning is out for the region and NW Western Australia.

They can occur with a 7.9 but not all that common. The real worries I have are twofold. First there was an earlier quake near Krakatau presumably along the transform fault in the Sunda Strait. That might set Krakatau off again, although not all that likely. More of a worry is that it was also at the southern end of the Trans-Sumatera fault. With the plate boundary now having given way from Aceh down to Bengkulu
(oops now up to 8.2 so I take that back about being a bit small for a tsunami, certainly explains why it was felt in Jakarta. Not felt in Bandung, or not by those I talked to.)
When (not if) the Trans-Sumatera fault lets go, it will produce much more damage. There are some quite large towns like Bukit Tinggi built across the fault and the epicentres tend to be shallow. Having the plate boundary move so much in the past two or three years, makes a movement on the Trans-Sumatera much more imminent. Like the San Andreas it is a strike slip fault and can let go along quite a length.

The underground coal miners at Ombilin have a reason to feel a bit more nervous too!

I hope Bengkulu and its inhabitants have survived the event although now I find it was 8.2, the damage will have been severe - that is a lot more energy than a 7.9.

There is a statue of Raffles in its main street. Although Raffles founded the Bogor botanical gardens, which is where his wife is buried, while he ruled Indonesia during the Napoleonic wars (Holland being a bit [pre-]occupied!) his main base was Bengkulu. When he set off to return to the UK, his ship got just clear of the offshore islands (where tonights earthquake was centred) his ship sank, taking with it his botanical records and much of his writings. Raffles managed to get back to shore, but missing most of his possessions.

So Bengkulu has a bit of a history for disasters.


User currently offlineCabso1 From Canada, joined May 2005, 502 posts, RR: 0
Reply 4, posted (6 years 10 months 3 weeks 3 days 5 hours ago) and read 1046 times:

I actually felt the earthquake as it happened. Scary stuff, especially when you don't know if your apartment block is earthquake-prone or not. Granted, it wasn't so bad in Singapore, however it was reasonably shaky.

User currently offlineBaroque From Australia, joined Apr 2006, 15380 posts, RR: 59
Reply 5, posted (6 years 10 months 3 weeks 3 days 5 hours ago) and read 1031 times:

Quoting Cabso1 (Reply 4):
I actually felt the earthquake as it happened. Scary stuff, especially when you don't know if your apartment block is earthquake-prone or not. Granted, it wasn't so bad in Singapore, however it was reasonably shaky.

Please write to the "did you feel it" link at
http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2007hear.php
An account of intensity felt is valuable, this information cannot be obtained from the instrumentation.

It is interesting that you are almost the same distance from the quake as Bandung where at least some did not feel it.

Aftershocks are rumbling around, offshore so far. Just hope the Trans-S does not let go with a large quake.


User currently offlineDraigonair From Netherlands, joined Oct 2000, 708 posts, RR: 6
Reply 6, posted (6 years 10 months 3 weeks 3 days 4 hours ago) and read 1011 times:

I also felt it...was also rather long, about a minute + weird stuff indeed...

nick



cheers
User currently offlineBaroque From Australia, joined Apr 2006, 15380 posts, RR: 59
Reply 7, posted (6 years 10 months 3 weeks 3 days 3 hours ago) and read 1008 times:

Quoting Draigonair (Reply 6):
I also felt it...was also rather long, about a minute + weird stuff indeed...

Where were you? Same request as for Cabso1.


User currently offlineCastleIsland From , joined Dec 1969, posts, RR:
Reply 8, posted (6 years 10 months 3 weeks 3 days 3 hours ago) and read 1008 times:

Quoting Baroque (Reply 3):
I hope Bengkulu and its inhabitants have survived the event although now I find it was 8.2, the damage will have been severe - that is a lot more energy than a 7.9.

Indeed, there's twice as much energy in an 8.2 relative to a 7.9. Hopefully the damage will not be great.


User currently offlineDraigonair From Netherlands, joined Oct 2000, 708 posts, RR: 6
Reply 9, posted (6 years 10 months 3 weeks 2 days 20 hours ago) and read 964 times:

again just now couple minutes ago! woke me up in bed...
Nick



cheers
User currently offlineDRAIGONAIR From Netherlands, joined Oct 2000, 708 posts, RR: 6
Reply 10, posted (6 years 10 months 3 weeks 2 days 20 hours ago) and read 955 times:

here we go:

Magnitude 8.0 - KEPULAUAN MENTAWAI REGION, INDONESIA
2007 September 12 23:49:06 UTC



cheers
User currently offlineQANTAS077 From Australia, joined Jan 2004, 5850 posts, RR: 40
Reply 11, posted (6 years 10 months 3 weeks 2 days 19 hours ago) and read 945 times:

http://edition.cnn.com/2007/WORLD/as...f/09/12/indonesia.quake/index.html

can't take a trick in that region...



a true friend is someone who sees the pain in your eyes, while everyone else believes the smile on your face.
User currently offlineCabso1 From Canada, joined May 2005, 502 posts, RR: 0
Reply 12, posted (6 years 10 months 3 weeks 2 days 19 hours ago) and read 938 times:

Yes, I felt it again too. I'll fill out the USGS form, Baroque.

User currently offlineBaroque From Australia, joined Apr 2006, 15380 posts, RR: 59
Reply 13, posted (6 years 10 months 3 weeks 2 days 15 hours ago) and read 901 times:

Quoting Cabso1 (Reply 12):
Yes, I felt it again too. I'll fill out the USGS form, Baroque.

Thanks Cabso1. The USGS now has the first major quake at 8.4 and the last huge one at 7.8 and nine others I can see over 5.0. Now getting a problem with overprinting of adjacent quakes so they are getting hard to count.

The aftershocks (stupid lady on our ABC just asked if these were like earthquakes - I would just like to see her face if she was close to a 7.8 aftershock!) seem to be getting closer to the coast.

I am wondering if this will put more stress on the T-S fault or if they could relieve it a bit. But it looks as if the first quake near the edge of the plate boundary has set off a series of others further into the Sumateran side of the plate.

If they were movement on the boundary (Benioff zone) they would be much deeper than the first, but the solutions given at:
http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2007hec6.php
indicate they are shallower. That might mean a whole new set of movements in the now unstable upper plate. Might be bad news.

Not surprised you felt an 8.4 guys. That is BIG.


User currently offlineAsstChiefMark From , joined Dec 1969, posts, RR:
Reply 14, posted (6 years 10 months 3 weeks 2 days 15 hours ago) and read 896 times:

They just had another 7.1 a few minutes ago.



[Edited 2007-09-13 06:57:50]

User currently offlineBaroque From Australia, joined Apr 2006, 15380 posts, RR: 59
Reply 15, posted (6 years 10 months 3 weeks 2 days 14 hours ago) and read 882 times:

Quoting AsstChiefMark (Reply 14):
They just had another 7.1 a few minutes ago.

Nearly missed that, I had that site up but one frame to the east. At least that latest one is further out to sea. I am worried that there might be an aftershock up around 7 onshore. Looking at the "1990 to present" earthquake map, I am wondering why I never experienced an earthquake on my visits to Padang and Bengkulu!


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