Best example of earthquake-induced liquefaction

[cchanderson]

Liquefaction has nothing to do with water...it can involve it but it doesn't require water. If you shake soil and sand violently it will flow like a liquid until the shaking stops.

[robloxcoconut219]

its a river of... dirt?

[mschneider18xx]

90% of the so-called liquifaction videos on Youtube are mis-identified water-main breaks. This video is the real-deal: the liquifaction is violent, and proceeds in pulses as S-waves compress and uncompress the ground.

Clue: if the "leak" continues after the quake is over, it's a broken water pipe.

[gt22]

@mschneider18xx is this what's happening in japan now? there's some videos going around showing the ground as if it is floating - scary stuff

[medusacascade100]

@mschneider18xx Um... Thats not exactly correct. After the 6.3 Christchurch earthquake in February of this year, We had four piles of liquefaction in our garden. They keep bubbling after the quake finished. Actually it took days for them to stop.

[stopbeingnasty]

@mschneider18xx lol your wrong.

[politicstop]

Thsi video proves that we are little more than fleas on this earth. One day it'll shake us off without so much as a snort.

[echoesroll]

old world secrets the omega

[fckcptlsm]

@echoesroll

sounds interesting. i will look into it. internet is great!

[ienkling]

@gramosjr I tinkle on your god.. what what?

[Matsutom]

earthquake-induced

[kiwigeofreak]

Great video. Its relevant in Christchurch, New Zealand now after earthquakes on 4 September 2010 and 22 February 2011 both caused extensive liquefaction to pop up.

[d3r3k01]

@gramosjr7 Like Ghadi is in hell, Your religion may have worked in the dark ages but hold little Modern service. Condemning your neighbor for not agreeing with you is Maladaptive.

[Katie5557]

This is not liquefaction..

this is the creation of sand volcanoes/geysers.. where the shaking of the ground, forces ground water up.. The "volcanoes" have "craters" where the water has erupted.. The morning after our earthquake.. I thought to myself.. there has been a tsunami, unbelievable the evidence of much water... and this silt, in places 3-4 ft thick..

[SanRafaelSwell]

Soil liquefaction describes a phenomenon whereby a soil substantially loses strength and stiffness in response to an applied stress, usually earthquake shaking or other rapid loading (force), causing it to behave like a liquid. This video is NOT liquefaction due to an earthquake. It is most likely a ruptured water main or sewer caused by the earthquake.

[trysirsaiddougal]

The "sand gysers" are exactly what we just got in our backyard in Christchurch New Zealand during yesterday's earthquake. Didnt get a video of it, but wow! There are hundreds in the area... they have dried up (mostly) and look like sand volcanos on the ground, in some areas they are linked by fissures which are forming as the volcanoes dry off.

The "sand gysers" are exactly what we just got in our backyard in Christchurch New Zealand during yesterday's earthquake.

[trysirsaiddougal]

The "sand gysers" are exactly what we just got in our backyard in Christchurch New Zealand during yesterday's earthquake. Didnt get a video of it, but wow! There are hundreds in the area... they have dried up (mostly) and look like sand volcanos on the ground, in some areas they are linked by fissures which are forming as the volcanoes dry off.

[Hissmannen]

Thats not nature, thats Chuck Norris when he had diarrhea..

[stopbeingnasty]

@Hissmannen lol

[vonkiser]

Looks like a water main blew to me.

[botoheadboy]

Ed Clamped strikes again, black gold that is.

[SaviourSole]

They built that building in the middle of a spring!

[rickyseabra]

isn't that a broken water main?

[LuminousAeon]

um... im no geologist, but does the solid ground turn to liquid, or does liquid rise up from under?...

[Valicore]

@LuminousAeon The solid ground turns to a liquid - a lot like quicksand.

[auronlu]

Good grief. I didn't realize you'd actually see the water coming up through the ground when it did that.

Remind me never, ever to buy property in the Marina district of San Francisco. ("Hey, I've got a GREAT idea: let's fill in a boggy with sand in one of the most seismically active places on earth and put houses on it! ")

[ACnitus]

It's called a BROKEN WATER MAIN.



Lol liquifaction

[jessejubilee]

How come the guy zooms in right when it happens? Made me think it was fake. Maybe he heard the noise first.

[dravidr007]

critical hydraulic gradient=-1 ...shame

[triny80]

the begining of the video is a high school, and person who is filming was a high school student at that school.

[Redward652]

I saw this on The History Channel once, and have been looking for it eversince on Youtube. Very nice. <3

[famebreaker]

this is a good video

[rochelimit55555]

Wow, It's almost like a flood. Imagine your house swallowed by the earth like that ...

[PSUZombie]

Oh lord here come the comments. Now everyone is an expert. On youtube. Typing messages on a video.

[CzarThePlezer]

@PSUZombie I think a lot of people are idiots, they just look up facts on Wikipedia which is a legitimate source (sarcasm)

[Eschatus2]

I guess the Japanese hadn't invented a focused lens in those days.

[helstontvx]

thaqts not liquifaction its just liquid

[comokate]

Actually it's a prime example of liquification; during a major earthquake water in the ground combines with soil to become almost like quick-sand. Look up the info on the US Geological survey site. This video shows an excellent example and why building codes have changed in earthquake prone areas as we know more about the dangers.

[comokate]

this is from th e US Geological survey site: "What Is Liquefaction?

Loose sand and silt that is saturated with water can behave like a liquid when shaken by an earthquake.How does it work:

Earthquake waves cause water pressures to increase in the sediment and the sand grains to lose contact with each other, leading the sediment to lose strength and behave like a liquid. "

So, it appears, contrary to what YOU want to believe, to be the same process when used in the context of seismic activity

[GeorgeRulesAll]

i was told that the shakeing causes the water table to rise, and liquefy the land, causing buildings to sink.

[comokate]

google Us Geological survey ...their site has great information and most of it is explained in lay-man's terms. I used to live in Southern California and a lot of people use the site daily to see what tremors and quakes ( and what magnitude) have occurred. It's pretty informative and has some great simulations you can watch.

[comokate]

Southern California has a 99% chance of a major ( greater than 6.7) earthquake happening in the next 30 years. Look at the US geological surevy site to see models of where it will hit and the computer generated video predictions of how the ground will shake. Thousands of people may lose their lives. I moved away from there...just too much crap in that state!

[Denvermorgan2000]

your lucky to get out i believe its going to sink into the ocean someday a man named William Branham who a lot of people including myself consider a prophet said that a chunk of california would fall into the ocean and from what i have seen of his other prophecys its not going to be wrong its gonna happen someday

[iJabproductions10]

that is a really cool video in school we are learning about earthquakes and this is the longest one

[hebneh]

There's a famous aerial photo taken after this earthquake of 3 or 4 identical apartment buildings, each about 10 stories tall, which all tipped over to varying degrees due to liquifaction of the ground under them.

[KrazyGoob]

meybe the orignal was in better resoulution but this video doesnt show much of anything

[pseudohendrix]

this footage is widely considered to be the only known video recorded example of earthquake induced liquifaction. it was shown to me in a physical geography lecture at university in Bristol. it is indeed liquifaction, not a water main or a spilled milkshake or blocked toilet or whatever

[frix0gatoS]

japan is really suffering from earthquakes.i ve seen a relative video for the earthquake in Kobe which struck in 1995. The result was destruction of traditional houses (mostly),roads, highways and a significant number of deaths. of course secondary effects also appeared in the area such as liquefaction. This exemple of the posted video as strange as it may seem is indeed a liquefaction which caused serious damage to the building.

[hop208]

Are you sure a water main didn't break.

[Al572]

the begining doesnt look like liquefaction. Liquefaction is when the ground behaves like a liquid. The video looks like water flooding the area.

[Al572]

nvmind i could be wrong about the vid.

[MrReaper2U]

Liquifaction is NOT when the ground behaves like a liquid. It is when the ground moves and vibrates and the underlying moisture or water rises to the surface because it is being squeezed out of the gaps between sand and dirt grains. It happens alot on reclaimed land and coastal cities where the ground has alot of moisture.

[comokate]

You are wrong. The following is taken *directly* from the US geological survey site:

"Liquification:A process by which water-saturated sediment temporarily loses strength and acts as a fluid, like when you wiggle your toes in the wet sand near the water at the beach. This effect can be caused by earthquake shaking."

There is also a short animation there that shows the process.

[MrReaper2U]

Yes, you are righ about the definition of "LIQUI-FICATION"....unfortunat­ely we are talking about "LIQUI-FACTION" here. Entirely different.

[comokate]

unfortunately?? here is the definition form the *UCSC* website:

Liquefaction is a physical process that takes place during some earthquakes that may lead to ground failure. As a consequence of liquefaction, soft, young, water-saturated, well sorted, fine grain sands and silts behave as viscous fluids rather than solids. Liquifaction takes place when seismic shear waves pass through a saturated granular soil layer, distort its granular structure, and cause some of its pore spaces to collapse.

[AirWaterLandBuffalo]

wtf is the UCSC?

[comokate]

It's a typo I made **4 MONTHS AGO**...do you always ask for clarification in such a "polite" way??

[comokate]

"USGS"...does that make you feel better?

[AirWaterLandBuffalo]

I was asking what it actually was because I genuinely didn't have a clue... and still don't what is the USGS? Yes, I know, I'm an ignorant bastard...

[AirWaterLandBuffalo]

Wait, hang on, yes I do, just read what it stands for a little way down the page (US geological survey). Sorry.

[Redward652]

USGS: United States Geological Survey. One of the world's foremost expert organizations on Geology, and the official part of the government charged with mapping geologic hazards such as volcanoes and fault zones in the US.

[edsgoldens1]

Okay folks, calm down and take it out side :)

[orangeblueandlavenda]

better to live in a boat:)

[QuiglysMom]

The person who posted the video is correct. When ground liquefaction occurs in wet sandy soils you will often get what are known as "sand gysers". These are really strange phenomena that look (as raff62 observed) like a broken water pipe at first, but when the earth quits shaking they solidify right up rather than running off or washing back into a hole. That's just what we see in the first 18 seconds. Then when the next shock comes along it really gets going. We just don't get to see the end.

[jeezyfan2]

right, a water pipe has just ruptured liquification is when the ground is not solid and turns into "Liquid"

[raff62]

your all wrong, its just a water pipe broken under the building, probably if the video went a bit longer you would have seen the plumbers truck turn up.

[buttdread]

that was way tooo much water for that theory

[conchman]

liquefaction happens during earthquakes in sandy areas, the sand turns into 'liquid' due to the movement of all the sand. Whole building can be swallowed if built in a sandy area and a strong earthquake hits.

[SailorBabe]

I live in the desert of California a mere 4 miles south of the San Andreas fault. We do have areas that are subject to liquafaction here, in the eastern end of the valley. Alot depends on how much of a aquafer is under the area. We made sure we did not live in an area of liquafaction. I feel safer here then anywhere in the USA

[letsg047]

yup thats some pretty good liquefaction yup.... and for the people who dont think i know what liquefaction is. i know what it is its when the liquid gets....factoned..

[AirWaterLandBuffalo]

Lol

[aakuuru]

liquefaction is when the waves of an earthquake cause the ground to become like jello because the speed at which the ground is moving back and forth/up and down is so fast.

[Fleischmahn]

M'kay.

[Fleischmahn]

What the hell is that, Lava?

[staphinfection]

I think it's sediments and water being pushed up from the ground due to the Earthquake.

[Pitchpici]

it must have been like a nightmare:|

[1HillbillyGirl]

San Bernardino valley in southern California is subject to this phenomenon. Surrounded on three sides by mountain ranges, and sitting atop thousands of natural hot springs, that horseshoe-shaped valley is a disaster waiting to happen. If a large enough earthquake hits, shock waves will travel thru the valley, reverberate from the mountain bedrock, ricochet and blend with oncoming shock waves. Always knew liquefaction was scary, but this video is the first I've seen documented. WoW.

[teal986]

same thing could happen in Palm Jumeira in Dubai

[hebneh]

The footage on the ground, in front of the airport terminal, is really amazing - the building appears to be sinking, due to liquifaction. This 8mm movie film deserves to have a really professional transfer instead of this poor quality one. Undoubtedly the original film shows far more than this version does.

[tepsicool]

this is nice. Got a subject soil foundation to engineer LAWRENCE V. ALIPIO. Divine Word College Laoag