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I just sat through a big earthquake here. That was crazy.
No wonder my dog kept barking before it started, I was telling him to shut up.
Tsunami warning here.

Oh, me, too just at the same time !

Then it must be a big one somewhere .

that was a big one!

Let's look at the news ...

Big one near Samos island, so Turkey felt it too. 6.6 on the Richter scale.

Yep, İzmir (Smyrna) - Seferihisar : 6.6

But I'm not near İzmir currently, we and İstanbul, also many cities feeled that ...

I'm in Athens and it felt big!

Yeah. In fact, it's normal earthquakes happen where there're many islands.. the weird thing is that we felt that though it's not over 7 and we're far ..

How they say it?: "Get well soon" :)

I split this thing off guys!

Oh yes, thank you Eadwine :)

In fact, I was just going to say sorry for it turned into "hexchat" .. "suddenly" ..
But when that happened in the middle of the thread :)

I think you should add the location in the title of the original post, Sparky..."Eastern Mediterranean" would be good.

Huckleberry Finn wrote: ↑Fri Oct 30, 2020 8:25 am Oh yes, thank you Eadwine :)

In fact, I was just going to say sorry for it turned into "hexchat" .. "suddenly" ..
But when that happened in the middle of the thread :)

Heh you're welcome. No probs having a chat left and right

Geology, the Eastern Med is a mess. Microplates, subduction zones, active volcanic arcs, Turkey being squeezed out between major faults like something slippery between the blades of a giant scissors, cyclops, angry gods, etc...

You forgot my name!

They evacuated my building, but I got back in.

not sure what ER meant by that -

i hope you guys stay safe as much as one can in such circumstances. i have felt a couple of minor ones in the past and that was weird. and i mean minor.

got it ER!

thinkpadx wrote: ↑Fri Oct 30, 2020 9:20 am not sure what ER meant by that -

Stevo said: something slippery between the blades of a giant scissors, cyclops, angry gods, etc...

I forgot the quote lol

"The sun comes into being each day from little pieces of fire that are collected." - Xenophanes

and a good bottle of wine is still a good bottle of wine - me

:-)))))

Magnitude 7.0, 15 km NNE of Néon Karlovásion, Greece
2020-10-30 07:51:27 (UTC -04:00)
21.0 km depth

https://earthquake.usgs.gov/earthquakes ... 9,84.90234

Turkey got it bad, many buildings fell and people died. In the Greek island of Samos 2 kids died, and there was a mini Tsunami with cars floating freely on the roads.

Yeah, apparently there are 2,570,000 people within 100km of the epicenter.

I'm pretty sure Poseidon is to blame here:

Poseidon, Olympian god of the sea and king of the sea gods; also god of flood, drought, earthquakes, and horses.

Any word from anti?

I was in an office on the 12th floor of an old 1920s-era 14 story office building when the 2001 magnitude 6.9 Nisqually Quake happened. Luckily they'd been working on a seismic retrofit in that building and were about halfway finished. The City Engineers said if it weren't for that the building probably would have collapsed. There was damage everywhere in downtown Seattle, broken glass all over the sidewalks, and one or two old brick buildings like ours did in fact collapse. One, the Fenix Underground, was a nightclub and live music venue so luckily it wasn't open for business at the time. I think the other also contained a business that hadn't opened yet.

Then I was at home for the 2013 magnitude 7.2 Bohol Quake (Bohol is one island over from Cebu where I live, and has several famous tourist attractions: the Chocolate Hills, a tarsier preserve, a big butterfly sanctuary, what's reputed to be the world's largest snake, plus many beach resorts, old Spanish churches and stuff.) It didn't damage the house but it was strong enough in Cebu City that a building's roof collapsed somewhere in the Port of Cebu killing several people, and the steeple or bell tower of the Santo Niño Basilica (another tourist attraction as well as a working church) fell down. Parts of Bohol were devastated. (Then three weeks later we got hit by Supertyphoon Yolanda or Haiyan, the one whose storm surge completely destroyed the port city of Catbalogan in East Samar province. It passed over the northern tip of Cebu but at our house it was still at typhoon strength with horizontal torrential rain at the peak of it. We had a tree in our neighborhood blow down and someone's outhouse got knocked over, otherwise no damage other than palm branches and banana leaves all over the place. I was afraid the big old jackfruit tree in front would blow down the way it was swaying back and forth, but it held.)

I vaguely remember that we felt the magnitude 9.2 1964 Alaska Earthquake clear down in Western Washington when I was a small boy. All I remember is that my mother and I stood in an interior doorway (which you shouldn't do, you should Drop, Cover and Hold: get down low, get underneath a sturdy table or desk or something or at least lay next to a taller piece of furniture that isn't going to fall on you such as a bed or something, and hang on to it) then I got to stay home from school that day which gave me an unexpected three day weekend. One of my cousins in Kodiak Alaska was drowned in the tsunami, we found out later.

Greetings

We missed the 2004 tsunami in Phuket by the skin-of-my-teeth
Fifteen of us were supposed to spend Xmas/NY on Phi-Phi - we
had already made reservations and were ready to fly out ...

We had assembled in Pattaya for various reasons - a different gulf,
because of some young lady, I postponed our departure to New Year
The horror of that Boxing Day apocalypse was simply frightening
Still is, to this day .... RIP

Regards

Jack

Stevo wrote: ↑Fri Oct 30, 2020 10:43 pm I'm pretty sure Poseidon is to blame here

Stevo wrote: ↑Fri Oct 30, 2020 10:43 pm I'm pretty sure Poseidon is to blame here:

Poseidon, Olympian god of the sea and king of the sea gods; also god of flood, drought, earthquakes, and horses.

Any word from anti?

Hi! I'm safe in Thessaloniki (Northern Greece) and we didn't even feel the shakes.
Very sad to read about the loss of life both sides of the border (Greece/Turkey).

i am glad you all are safe!

It's surprising to me here in Southern California how many people are totally unprepared for a major quake from any one of the many known or unknown active faults criss-crossing the area. The L.A. basin is overdue for a major disaster. Luckily, the eastern San Diego area is probably as far from any really active faults as possible in SoCal--the Elsinore fault about 50 mi NE has about a mag 7 maximum credible quake and breaks maybe every 300 years or so, so we'd see some shaking here, but no buildings collapsing.

Downtown San Diego has the Rose Canyon fault running directly under it, but that one probably breaks more on a time scale of thousands of years instead of hundreds.

I've lived through many earthquakes here, but its hard to get used to them. At least I took this one sitting on a chair in front of my computer, and I didn't break a sweat.

The problem with earthquakes is they happen suddenly and unexpectedly. For a year after the Bohol earthquake every time a car drove past and vibrated the ground a bit my adrenaline started flowing and I thought "here we go again." Not to mention the aftershocks that went on for almost a month. Talk about PTSD! I'm pretty sure I must have been wandering around downtown Seattle with that thousand-yard stare after the Nisqually one too. At least with typhoons you know they're coming and can take steps to prepare so you feel like you're doing something and have a bit of control over your situation. With earthquakes you're pretty much helpless other than general preparedness, i.e. having a stash of fresh water and canned goods put away for emergencies. Even having an evacuation plan doesn't necessarily do any good because the streets along your planned route may be impassable. You pretty much have to just ride them out and pray.

thinkpadx wrote: ↑Sat Oct 31, 2020 8:35 pmi am glad you all are safe!

Thank you :)

anticapitalista wrote: ↑Sat Oct 31, 2020 5:22 pmVery sad to read about the loss of life both sides of the border (Greece/Turkey).

Thank you, too and me, too .

What I was surprised is: In that region (Aegean Sea) it's something that always happens but we never feel them, just hear on news. But when we felt it and Sparky told about that I was shocked, said to myself "then, the Aegean Sea again, but how ?? ... that big !? .. "

In 1999 I was just going to bed, listening to the news at 03:01 am .. And ... 7.8 .. one of the most demonstrative ones, lasted more than 60 sec. and that made it even worse .. (the speaker woman also got caught on-air)

Also the type of land (soil or rock) changes the effect, say, soft soil (and such) makes an amplifying effect in general ...

Huckleberry Finn wrote: ↑Sun Nov 01, 2020 4:25 am Also the type of land (soil or rock) changes the effect, say, soft soil (and such) makes an amplifying effect in general ...

It's called liquifaction where soil, especially if waterlogged, acts like a liquid during an earthquake and loses all stability. I suppose sand even if dry would do the same thing, but who would build buildings upon sand? (Hopefully no one.)

https://www.youtube.com/watch?v=1n3n2Ox4Yfk

Ithaca poem read by Sean Connery RIP

Lots of buildings are built on soft sediments that do quite badly in major quakes--sometimes that's the only choice, or they are grandfathered in. Examples are everywhere--Mexico City, fill along San Francisco Bay, beachfront apartments in the SoCal area...

I'm sure most people know that the Pacific NW is due for a magnitude 9 megathrust quake and tsunami on the scale of the 2004 Sumatra and 2011 Japan disasters sooner or later. We even know exactly the year, date, and hour the last one occurred in 1700, since the Japanese recorded the time and date of its tsunami hitting their coast.

Is that guaranteed to be in the vicinity of the Pacific NW or could it happen anywhere on the larger tectonic plate?

The fault is just offshore so the whole PNW could be affected. https://en.wikipedia.org/wiki/Cascadia_subduction_zone The Cascade Mountains are all volcanic and are related to the subduction zone from land from the Pacific plate being thrust underneath the continental plate. Plus there's another fault running right through Seattle and Elliot Bay: https://en.wikipedia.org/wiki/Seattle_Fault It all gets kind of complicated. Seattlites call it "the big one." Many or most people are prepared but also tend to be fatalistic about it at the same time.

Ayda , a 3 y.o. little girl, rescued from the wreckage "after 91 hours", safe & sound :)

She smiled, everyone cried ...

metreo wrote: ↑Tue Nov 03, 2020 1:12 am Is that guaranteed to be in the vicinity of the Pacific NW or could it happen anywhere on the larger tectonic plate?

Anywhere with active subduction zones is liable to get the megaquakes around magnitude 9. Chile, Indonesia, Japan, etc. Generally, several hundreds kilometers of subduction zone break at once in these type of quakes. California, Turkey, NZ, and so on have another type of major fault that moves horizontally, such as CA's San Andreas or NZ's Alpine faults. Those temblors are "limited" to around 8 magnitude max, but the epicenters are in the upper part of the crust and can be right under cities such as San Francisco, where subduction zones dive hundreds of KM deep into the earth and those epicenters are usually much deeper.

The maximum credible quake on a fault depends on its length and how much of it moves during an event. Nobody expects the whole San Andreas to break during the next "Big One". Seismologists study the fault to find out when the last quakes occurred and how much of the fault was involved by digging trenches across it where it crosses sediments, usually seasonal ponds along the fault traces, since they have offset peat layers that can be C-14 dated.

Living in the SF Bay Area most people don't have earthquake insurance for their homes (we never did tbh) or even bother to have stockpiled supplies. It's certainly not something people talk about or seem much concerned. There was a largish quake a while a go up in Sonoma and of course there are frequent rumbles you might feel if you were laying down which feel like a large is truck driving by the house.

I guess when I look at the larger San Andreas or the Pacific plate more broadly the densely populated areas are only a small percentage of the potential surface area at risk.

It's interesting to travel up to Point Reyes where you can see the large shifts up close.

metreo wrote: ↑Tue Nov 03, 2020 11:12 am Living in the SF Bay Area most people don't have earthquake insurance for their homes (we never did tbh) or even bother to have stockpiled supplies. It's certainly not something people talk about or seem much concerned. There was a largish quake a while a go up in Sonoma and of course there are frequent rumbles you might feel if you were laying down which feel like a large is truck driving by the house.

I guess when I look at the larger San Andreas or the Pacific plate more broadly the densely populated areas are only a small percentage of the potential surface area at risk.

It's interesting to travel up to Point Reyes where you can see the large shifts up close.

It's the plate boundaries that are active, hence the Pacific's "Ring of Fire". Not much happens in the interior of plates unless a hot spot punches through, of which Hawaii is the classic example, or there are old faults already there, such as in the Mississippi Valley.

In the Bay Area, you can also get big shocks from the very active Hayward fault in the East Bay, which runs right under UC Berkeley's stadium. I've always wanted to visit the fault sections that are creeping up there, such as in Hollister: https://geologycafe.com/fieldtrips/hollister.html

The San Andreas itself creeps in the Parkfield area: https://geotripper.blogspot.com/2017/11 ... lt-15.html