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Thread: Recent Earthquakes - Things are active.

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    Recent Earthquakes - Things are active.

    New Zealand 5.8 -Cliffs crumble


    Source: https://www.youtube.com/watch?v=U_LrAi9DE3w


    5.1 in Oklahoma and others worldwide - which Dutchsinse believes was caused by Fracking

    Last edited by BabaRa, 14th February 2016 at 19:16.

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    Its not fracking Barbara, but injection wells doing the nasty deed in California, Colorado, and Oklahoma. I have numerous threads elsewhere on the background of that.

    I have been monitoring daily quakes in South America on the Ring of Fire. It's more active than I have seen before.

    --Bob

    PS:

    which Dutchsinse believes was caused by Fracking
    Dutchsinse has lost A L L credibility with me.

    I have studied Oklahoma's oil and injection wells ON-SITE (hands on in-the-field remote sensing) extensively for the last 3 years, and it is NOT fracking, but waste water injection wells being over-pressured onto the Arbuckle oil production zone which they are dumping into.

    The "fracking" nonsense disinformation is doing nobody any good.

    (PPS - I DO appreciate that you are trying to see what may be evoking abnormal activity in potentially unstable fault zones. More lay people need to understand from a scientific perspective and not an emotionally charged drama i.e. 'fracking'.)

    References:
    Injection wells in Oklahoma


    Oklahoma quake historical - correspondence with injection well location is very very coincident.


    Fracking operations is a one time thing, at best. It is not designed to over-stimulate fault zones. Injection wells are dangerous when they are stimulating faults..

    Fault map, Oklahoma (limited but covers the Oklahoma City area which has had a lot of news coverage lately)..



    Stratigraphic (shows where in the rock strata the various "zones" are below the surface of the earth)..


    (the Arbuckle sits above bedrock. Putting high pressure waste-water into that zone causes slippage when over-pressured, across the region - Oklahoma, Kansas, etc.)

    The over-pressuring events are due to insane greed in the wastewater disposal companies, IMHO. They have been told to STOP but they have not.

    It is not fracking.. It is disposal well issues..

    As to South America - the Ring of Fire I have noted to be very responsive to solar activity.. specifically proton influx into the earth's geomagnetic field and CME events evoking geomagnetic instability.. The energy is absorbed, plates melt, and the fault tension is released, catastrophically.. a quake or so appears. (see references from Mitch Battros for historical data on plate melting and quakes resultant therefrom, from solar originated activity being absorbed by the earth)..
    Last edited by Bob, 15th February 2016 at 03:03.

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    Quote Originally posted by Bob View Post
    .. It is not fracking.. It is disposal well issues..

    Hi Bob, just read your thread over at PA. Thanks for info..was not aware of the disposal wells.

    I'm not disputing your theory, but this is what I understand about fracking: Is my info incorrect?

    *8 million gallons of water are pumped into the ground at high pressure per fracking
    *Up to 600 chemicals are used in fracking fluid, including known carcinogens and toxins

    Is it possible that both the fracking and the disposal wells are causing this?

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    Over a BILLION gallons of water daily, every day, is pumped into the fracture fault zones by DISPOSAL WELLS..

    Fracking is a very very small and comparatively "gentle" phenomenon to break up tight oil shale formations (sometimes it is done to limestones).. it pumps in a small fraction of water with "propants" which for the most part are recovered when the propants are in-place, keeping open the oil/gas bearing microfractures in the hydrocarbon zone.

    Fracking may cause what is called a temporary very small micro-quake on a normal production zone. There are seismic monitors installed over the fracking site which monitor the extent of the vibration, and if anything starts to get above 1 on the Richter scale they stop. That is how responsible fracking is done. Hydraulic Fracturing (Fracking) is a ONE TIME operation, and monitored for safe low level vibration.

    Disposal wells are another story.
    Disposal injection wells are a continual violent operation in terms of pressure and volume put back into the earth.

    They CONTINUALLY overdrive, they flood, and they over pressure zones which are generally right above granite, and the granite acts like a conductor which moves the shock wave energy along it, to areas that can be far far away. Disposal wells are an awful assault on the earth. They cause stress imbalances, and they do that continually.


    It is not "theory", I have been on-site and monitor these things.

    The Oklahoma Corporate commission for that state, is responsible for general "paperwork registration" of disposal wells, new and old wells, regulatory filing and maintenance operations have said it IS the disposal well situation causing the problems for the quakes.

    Disposal wells are not regulated as they should be - it is a loop hole.

    A disposal well being over-pressured is like pumping up a time-bomb waiting for something to trip and set off the quake. There are no monitors looking for seismic activity on disposal wells. It is not watched over by those who would shut things down if things go south.


    That loop-hole is allowing for the damaging of people's homes everywhere. Disposal wells do worse though, than just trigger larger quakes. When the injection well fluid leaks into other wells because of induced fractures which intrude into other zones, thos other wells suffer. If the older wells that have been intruded with were "surface plugged" and not well done, or if their casings were old and leaky (like from the 1920's), the ground water contamination can happen as well.

    Disposal well operators I believe don't care what they blast. They make lots of $$$ per gallon tossed into their hole. If the well casing is leaking all the toxic substances CAN seep back up through other OLD improperly capped wells. (called plugged).

    A plugged well (old well, or a nonproductive well), should have a casing which is tightly bound to the rock in the water table. The regulator commissions are supposed to monitor plugging operations and well casing status. Having been in the field to evaluate this first hand and see for myself, and having talked to some operators who "plug", old wells are not guaranteed to be even plugged properly.. MANY wells which were drilled in the 1920's have no records, and trying to find them requires a metal detector out in the field to sweep for where the old piping may have been.

    Operators abandoned many times, just walked away, leaving whatever was there.

    Disposal well operators have the same issue about NOT knowing what the fault zones are like, not knowing the old leaky wells in the area, or if their disposal well is going to flood somebody else's well which was producing. I talked to one operator with specifically that problem. So I know for a fact, the disposal well issue.

    In Colorado, when the quakes started, disposal wells were overpressuring formations in the DJ basin (a 6500-7500 deep zone from the surface), and as long as they were over-pressuring, many hundreds of times greater than a fracking operation, with many hundreds of times more water/chemical was put in to the disposal well.

    Fracking water is also recovered, it is not continually pumped into a new well being created. The spent frack water is pumped OUT (with the oil and gas), the water oil gas separated, and that old fracking water is then disposed of in a DISPOSAL WELL..

    AND it is put in many many many times greater volume and pressure than the formation normally would hold. It is insanity and greed IMHO.

    Fracking isn't the problem if they are not trying to frack a known fault zone. No petro-geologist in their right mind would do that consciously. They'd loose their license, and the company doing it fined immensely. The regulatory agency would be over their shoulders monitoring the new well operation.

    The problem is the disposal well is NOT regulated.. AND old wells near the disposal sites, can have leaks in the casings which are supposed to be sealed. Contamination then comes from the "disposed of toxic associated water, and old frack water" being deposited IN the disposal well.

    This is a regulatory issue of no oversight on the disposal, and no proper method of monitoring with micro-seismic detectors near the disposal wells.

    The disposal companies are getting away with horrendous heinous activity. Fracking by itself is safe, disposal wells are not. There are no leaks from the fracking operation being done deeply with a properly sealed NEW WELL. It is the old wells, the disposal wells where the problem resides.. AND the lack of oversight.

    Here is a scientific paper detailing the INJECTION WASTE WATER disposal issue and the damage done. It has been continually documented over and over, the deep injection wastewater wells are associated with creating the earthquakes.

    Additionally I pointed out the issue with the cross contamination of old wells, and existing wells, when zonal fractures happen after having been induced by injection well damage(s). The irresponsibility of the injection well operation is horrendous.

    Using the proper ground penetrating remote sensing techniques, it is possible to monitor and plot the path in 3D the underground seepage, concentration and destination of these damaging issues. All that costs money and the disposal well operators certainly are not going to pay for the damage they've created, or track which wells are the culprits.. they are the culprits IMHO when it comes down to it.

    ref: https://fullerfuture.files.wordpress...es-12-2-13.pdf

    Geologists and seismologists are not the only engaged
    professionals raising concerns about fracking wastewater disposal
    related induced seismology. State oil and gas officials in both
    Arkansas and Ohio have shut down fracking wastewater disposal
    wells that have been connected with induced earthquakes. In the
    case of induced seismology in the Guy-Greenbrier area or
    Arkansas, the state’s governor, Oil and Gas commission, and the
    general public all concurred to shut down the responsible injectionwells
    as, “nearly 1000 recorded quakes had struck the area since
    the wells had started up” (Kerr, 2012).

    A moratorium was declared within a 1,150 square mile area
    around Guy-Greenbrier on deep-injection wastewater disposal
    activities, while seismic-risk studies of the entire Fayetteville shale
    play were also required. Additionally, “Affected residents filed a
    class-action lawsuit against Chesapeake Energy and BHP Billiton
    Petroleum—the first time anyone has sued oil and gas companies
    for causing an earthquake” (Behar, 2013). University of Memphis
    seismologist Stephen Horton related that once the wells were shut
    down the quakes tapered away and ultimately ceased (Kerr, 2012).

    The Youngstown, Ohio Fracking Wastewater Disposal Induced Earthquakes
    When a magnitude 2.7 earthquake struck near Youngstown,
    Ohio on December 24, 2011, it was the tenth such earthquake in
    the 2.0 to 2.7 magnitude range since March of that year connected
    with fracking wastewater injection well Northstar 1 owned by D&L
    Energy Group.

    The well, which came online in December 2010 (just
    three months prior to start of seismic activity), received the vast
    majority of its wastewater from fracking projects in Pennsylvania
    (Fountain, 2012). Nearly 60% of all the fracking wastewater
    disposed of in Ohio injection-wells in 2012, 257 million gallons,
    originated in others states, marking a 19% one-year increase in outof-state
    fracking wastewater injected into subterranean Ohio
    (Johanek, 2013).

    Prior to January 2011 Youngstown, Ohio had not
    experienced an earthquake dating back to 1776 when scientists first
    began recording their observations (Choi, 2013).

    Upon analysis of the December 24, 2011 earthquake by the Ohio
    Department of Natural Resources it was determined that the quake
    originated less than 2,000 feet below the Northstar 1 well (Fountain,
    2012). No sooner had the State of Ohio put an immediate cessation
    to injection at the well, when an earthquake with a 16 times greater
    magnitude of 3.9 struck the following week, on New Year’s Eve,
    December 31, 2011.

    At that point state officials instituted a
    moratorium on the injection of (fracking) wastewater within a 5-mile
    radius of the D&L well until scientists had an opportunity to analyze
    the data from the string of quakes (Fountain, 2012).
    Anyone not savvy in the field, will see the word "fracking" and jump to conclusions, not connecting the dots, that it is the DISPOSAL operation, overpressuring with wastewater, that is inducing the problems.

    E D U C A T I O N is partially a solution, clearing out the 'drama' between the fracking nonsense, actually how it is done, and how disposal wells differ.

    I have had numerous discussions with operators who understand balance. And they have said, there are plenty of big corporations who couldn't care in the least, that bottom $$ is all they care about. Responsible operations verses irresponsible greed.

    Wastewater consists of contaminated water from many sources.

    1) Associated with which comes up from the earth from ancient sea-beds where hydrocarbons are commingled. Water has to be separated from the oil and gas, and usually contains nasty chemicals from the earth, produced NATURALLY over the many eons (millions of years of heat and pressure). Metals, radioactives, toxins are all part of that wastewater.

    2) SPENT and RECOVERED fracking water. That water contains residues of the propants (substances which hold open the fractures), various unique dispersing agents (proprietary substances used to facilitate an efficient breaking up of tight shales). It could then contain parts of the oil and gas from the actual formation, not completely separated out. So the old frack water that is pulled back OUT after the operation has to be disposed of. It ends up going into a DISPOSAL WELL usually many miles away from the well site, and that disposal has to be paid for - both in trucking fees, and fees to the disposal injection well operator.

    3) Wastewater from water and chemical plants. Wastes instead of being discharged into lakes, streams, rivers, oceans, are sent to an injection well site, to be put out of sight out of mind in a deep injection well. The same types of problems happen with high pressure disposal pumping pressuring formations that never had such assaults.

    I have some more threads up that detail Fracking, Injection wells, and Earthquake induction:

    1) Ground shaking problem

    2) Smoking Guns in Texas

    3) Radioactive Black Goo source located
    Last edited by Bob, 16th February 2016 at 00:16.

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    Quote Originally posted by BabaRa View Post
    New Zealand 5.8 -Cliffs crumble

    [NewZealand-ChristChurch Video]

    5.1 in Oklahoma and others worldwide - which Dutchsinse believes was caused by Fracking

    [..]
    (emphasis mine)

    The New Zealand quake was located NW of a deep fault and was 17km (11mi) East NE of Christchurch, New Zealand OFF-SHORE.

    (reference: 5.8 magnitude
    17km ENE of Christchurch, New Zealand
    2016-02-14 00:13:43 UTC
    8.2 km deep )

    South Island of New Zealand is a geologically 'active' area.


    There is NO fracking happening OFF-SHORE where this quake occurred.

    And there is NO FRACKING what-so-ever in the ChristChurch area of New Zealand.


    (image provided by USGS worldwide earthquake maps).

    What then causes earthquakes in New Zealand?


    The Australian Plate and the Pacific Plate are continually moving over each other.


    In the SOUTH ISLAND, plate motion causes these quakes.

    The motion is called a "strike slip", and the wave emission is a vertical up and down movement primarily when the plates move over each other. When they move side by side, one can see bizarre changes in the land (below).

    Shown below in New Zealand, the effects of Strike-Slip fault motion on land:



    It is clear to me, that neither of the areas used in the OP had earthquakes due to "fracking".

    Education is needed to understand plate movement, disposal well damage that triggers earthquakes, and accurate fracking information.

    I feel strongly, that word "fracking" is being used improperly by "environmentalists" to create emotional issues, IMHO and/or to bury or hide the real causes of the earthquake activity.


    Geological References on the Plates, Australian and Pacific:


    Seismotectonics of the Eastern Margin of the Australia Plate

    The eastern margin of the Australia plate is one of the most sesimically active areas of the world due to high rates of convergence between the Australia and Pacific plates.

    In the region of New Zealand, the 3000 km long Australia-Pacific plate boundary extends from south of Macquarie Island to the southern Kermadec Island chain. It includes an oceanic transform (the Macquarie Ridge), two oppositely verging subduction zones (Puysegur and Hikurangi), and a transpressive continental transform, the Alpine Fault through South Island, New Zealand.

    Since 1900 there have been 15 M7.5+ earthquakes recorded near New Zealand. Nine of these, and the four largest, occurred along or near the Macquarie Ridge, including the 1989 M8.2 event on the ridge itself, and the 2004 M8.1 event 200 km to the west of the plate boundary, reflecting intraplate deformation. The largest recorded earthquake in New Zealand itself was the 1931 M7.8 Hawke's Bay earthquake, which killed 256 people. The last M7.5+ earthquake along the Alpine Fault was 170 years ago; studies of the faults' strain accumulation suggest that similar events are likely to occur again.

    North of New Zealand, the Australia-Pacific boundary stretches east of Tonga and Fiji to 250 km south of Samoa. For 2,200 km the trench is approximately linear, and includes two segments where old (>120 Myr) Pacific oceanic lithosphere rapidly subducts westward (Kermadec and Tonga). At the northern end of the Tonga trench, the boundary curves sharply westward and changes along a 700 km-long segment from trench-normal subduction, to oblique subduction, to a left lateral transform-like structure.

    Australia-Pacific convergence rates increase northward from 60 mm/yr at the southern Kermadec trench to 90 mm/yr at the northern Tonga trench; however, significant back arc extension (or equivalently, slab rollback) causes the consumption rate of subducting Pacific lithosphere to be much faster.

    The spreading rate in the Havre trough, west of the Kermadec trench, increases northward from 8 to 20 mm/yr. The southern tip of this spreading center is propagating into the North Island of New Zealand, rifting it apart. In the southern Lau Basin, west of the Tonga trench, the spreading rate increases northward from 60 to 90 mm/yr, and in the northern Lau Basin, multiple spreading centers result in an extension rate as high as 160 mm/yr.

    The overall subduction velocity of the Pacific plate is the vector sum of Australia-Pacific velocity and back arc spreading velocity: thus it increases northward along the Kermadec trench from 70 to 100 mm/yr, and along the Tonga trench from 150 to 240 mm/yr.

    The Kermadec-Tonga subduction zone generates many large earthquakes on the interface between the descending Pacific and overriding Australia plates, within the two plates themselves and, less frequently, near the outer rise of the Pacific plate east of the trench. Since 1900, 40 M7.5+ earthquakes have been recorded, mostly north of 30°S. However, it is unclear whether any of the few historic M8+ events that have occurred close to the plate boundary were underthrusting events on the plate interface, or were intraplate earthquakes. On September 29, 2009, one of the largest normal fault (outer rise) earthquakes ever recorded (M8.1) occurred south of Samoa, 40 km east of the Tonga trench, generating a tsunami that killed at least 180 people.

    Across the North Fiji Basin and to the west of the Vanuatu Islands, the Australia plate again subducts eastwards beneath the Pacific, at the North New Hebrides trench. At the southern end of this trench, east of the Loyalty Islands, the plate boundary curves east into an oceanic transform-like structure analogous to the one north of Tonga.

    Australia-Pacific convergence rates increase northward from 80 to 90 mm/yr along the North New Hebrides trench, but the Australia plate consumption rate is increased by extension in the back arc and in the North Fiji Basin. Back arc spreading occurs at a rate of 50 mm/yr along most of the subduction zone, except near ~15°S, where the D'Entrecasteaux ridge intersects the trench and causes localized compression of 50 mm/yr in the back arc. Therefore, the Australia plate subduction velocity ranges from 120 mm/yr at the southern end of the North New Hebrides trench, to 40 mm/yr at the D'Entrecasteaux ridge-trench intersection, to 170 mm/yr at the northern end of the trench.

    Large earthquakes are common along the North New Hebrides trench and have mechanisms associated with subduction tectonics, though occasional strike slip earthquakes occur near the subduction of the D'Entrecasteaux ridge.

    Within the subduction zone 34 M7.5+ earthquakes have been recorded since 1900. On October 7, 2009, a large interplate thrust fault earthquake (M7.6) in the northern North New Hebrides subduction zone was followed 15 minutes later by an even larger interplate event (M7.8) 60 km to the north. It is likely that the first event triggered the second of the so-called earthquake "doublet".
    Last edited by Bob, 16th February 2016 at 17:58.

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    Quote Originally posted by Bob View Post
    (emphasis mine)


    I feel strongly, that word "fracking" is being used improperly to create emotional issues, IMHO and to bury or hide the real causes of the earthquake activity.


    Geological References on the Plates, Australian and Pacific:


    Thanks for info. - wasn't implying that the New Zealand quake was due to fracking - only Oklahoma quake, which you have now clarified for me. I just put the 2 quakes in the same post for my ease.

    I'm pretty familiar with plate tectonics and I watch earthquake activity regularly, as "earth changes" is one of my interests. Also, I live in California, which I'm sure you're aware that our fault map looks like a road map.

    As for' fracking' being use to hide the truth . . . well, not surprising. My belief that most of what we hear on both msn and the alternative news is either false or blown out of proportion to train us use to react emotionally rather than logically or intuitively.
    Last edited by BabaRa, 16th February 2016 at 17:57.

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    Quote Originally posted by BabaRa View Post
    Thanks for info. - wasn't implying that the New Zealand quake was due to fracking - only Oklahoma quake, which you have now clarified for me. I just put the 2 quakes in the same post for my ease.

    I'm pretty familiar with plate tectonics and I watch earthquake activity regularly, as "earth changes" is one of my interests. Also, I live in California, which I'm sure you're aware that our fault map looks like a road map.

    As for' fracking' being use to hide the truth . . . well, not surprising. My belief that most of what we hear on both msn and the alternative news is either false or blown out of proportion to train us use to react emotionally rather than logically or intuitively.
    Agreed - I qualified my feeling statement to add the word "environmentalists". Earthquakes are a highly charged emotional issue, and people not knowing WHAT is happening, why it is happening, fear results, then anger, then frustration.

    Only through offering proper easy-to-understand scientific information to attempt to remove the "complexity" of the issues (and use simple words) on this subject I feel people then can go to exactly where the problem resides (as in Oklahoma, California, Texas, etc.) where disposal wells are damaging the environment so much.

    It is easy to use the "fracking" word as so many emotionally charged social-media coverage is not explaining it, as-it-is.

    I take interest on and will point out completely when a "frack job" goes awry.. (there was one in Colorado where people died due to doing stupid on the high pressure plumbing... and I have a thread on that as well).

    Without knowing the mechanics, of HOW water contamination happens, folks just will hear "fracking" and then try to mobilize emotionally against fracking operations. If it means anything, economically, fracking wells has upped US energy production and has put a severe economic dent in the european, asian, euroasian and mideast oil producers. I would not put it past them to be behind creating "social media drama" to attempt to economically put a chink in the US economy.

    What bothers me is a driller who doesn't know the field, the historical OLD oil wells in the area, will try to use "water flood" to get more oil out of their well.. and runs the risk of having the deep contaminated water seep out upwards from the other old wells (that were supposed to be properly plugged).. And people then report contamination of their water wells (as in Pennsylvania for instance, northern Colorado for instance).. Those water flood stimulation wells are a contamination source, but the Disposal wells, OMG..

    And news media and social media, (MSM and the alternative new MSM, the social media repeating disinformation/sensationalism) jump on a report from a home-owner pleading to others to "shut down the drilling", when they have no clue how the contamination got there, or why their house is shaking..

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    You are pretty clued up on all this, may I ask your opinion/feelings on pancake earthquakes, having experienced many quakes here in CHCH, the feb 22 nd 2011 pancake was a totally different experience but feel we were never fully given the right info as it did not line up with the experience.

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    Sierra Club ignores the "fracking" nonsense and goes to the heart of the issue in Oklahoma, filing suit against the disposal well problem..

    The Sierra Club has filed a lawsuit in US District Court for the Western District of Oklahoma against Chesapeake Operating LLC, Devon Energy Production Co. LP, and New Dominion LLC, saying injection wells have contributed to induced seismicity in Oklahoma and southern Kansas.

    “Neither the [US Environmental Protection Agency] nor the state of Oklahoma have commenced or are diligently prosecuting a civil or criminal action in a state or federal court to abate the imminent and substantial endangerment,” the lawsuit said.

    The Sierra Club requested that a judge order the three companies to “reduce, immediately and substantially, the amounts of production waste they are injecting into the ground.” The area involved is the Arbuckle formation.

    In addition, the lawsuit requested that a federal judge declare the practice of injecting production waste as a public health danger.

    The Sierra Club also sought a court-ordered independent earthquake monitoring and prediction center. Because a reduction in injection volumes would take time to result in reduced risk, the Sierra Club’s lawsuit also asked that the oil companies be ordered to reinforce “vulnerable structures” that could be impacted by large magnitude quakes.

    “In recent years, it has been established that the injection of production wastes into the ground through high-rate disposal wells causes earthquakes,” the lawsuit said.

    ============

    As I had pointed out above in my earlier posts, the disposal well problem has been masked by the emotional disinformation campaign promulgated alleging "fracking" as the cause of major earthquakes. They have done such a dis-service.

    Well the Sierra Club has said enough is enough, and pointed out how LAX the oversight is by the regulatory bodies.

    Finally. (Source)

    You are pretty clued up on all this, may I ask your opinion/feelings on pancake earthquakes, having experienced many quakes here in CHCH, the feb 22 nd 2011 pancake was a totally different experience but feel we were never fully given the right info as it did not line up with the experience.
    Aianawa - CHCH, that would be an abbreviation for ChristChurch, NZ?

    I can't say I have heard the exact term "pancake earthquakes" used. (Could that be a slang term? ) Let me look a bit on this..

    ==UPDATE==

    OK, got this reference:

    An earthquake occurred in Christchurch on 22 February 2011 at 12:51 p.m. local time (23:51 21 February UTC) and registered 6.3 on the Richter scale.

    The earthquake struck the Canterbury Region in New Zealand's South Island and was centred 2 kilometres (1.2 mi) west of the port town of Lyttelton, and 10 kilometres (6 mi) south-east of the centre of Christchurch, at the time New Zealand's second-most populous city. The earthquake caused widespread damage across Christchurch, killing 185 people in the nation's second deadliest natural disaster.

    Christchurch's central city and eastern suburbs were badly affected, with damage to buildings and infrastructure already weakened by the magnitude 7.1 Canterbury earthquake of 4 September 2010 and its aftershocks.

    Significant liquefaction affected the eastern suburbs, producing around 400,000 tonnes of silt.
    I am VERY familiar with the liquefaction phenomenon.

    A vibration induced by the slip fault quake can induce immense liquefaction, literally turning the ground into what appears to be jelly or quicksand..

    Is that the effect that you experienced? Rubbery rolly-polly like? Feelings like going up and down on an elevator?
    Last edited by Bob, 16th February 2016 at 22:33.

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    On the question posed by Aianawa

    The earthquake was indeed a "strike-slip event with oblique motion".

    The fault arrangement (hidden layered unknown faults) when they abruptly fractured caused mostly horizontal movement with some vertical movement. The feeling would be like being tossed upwards and downwards, on a trampoline. In fact people were reported as being tossed in the air in some cases.

    There was what is called a reverse thrust against the fault zones, causing upwards vertical movement.

    The vertical acceleration was far greater than the horizontal acceleration and would feel very different than a side by side tossing.

    The liquefaction phenomenon is scary as all hell.

    Historically in Alaska, in 1964 the quake was massive above 9 on the scale, and a whole town disappeared when the ground liquefied due the earthquake's particular motion.

    "The New Zealand earthquake in 2011 was 'just' 6.1, but it killed 150-some people," West said. "That quake was so lethal because it struck right smack in town and had soil perfectly situated to exaggerate that motion," he said, soil not that different from Anchorage.
    Example of what was happening:


    The particular arrangement of the faults, how they were able to move and slip was the difference.

    I have proposed numerous times to groups, we need to do proper MAPPING of the fault zones, not using the existing techniques of vibroseis and geophones, but to use the newest techniques to evaluate areas where earthquakes/landslides and underground activity is happening and can be accentuated.. Such words travel into deaf ears, "it costs money" and what are people going to do when the quakes hit? Why point out their homes, businesses and lives are at risk? Why cause panic?

    hmmmm... politics once again..

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    Senior Member Aianawa's Avatar
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    On the feb 22 nd 2011 day earthquake I went past a few cars like the picture above, one only the backside/boot showing, a friend went outside where their son was last seen and he was knee deep in liquefaction and yes was nightmarish for many the liquefaction, in my case there was not a going up happening but a time lapse of up to 1 and a half seconds ( I feel ), no memory of time lapse just the knowing it was 1 and a half seconds, was in a twoish story building about a hundred and twenty years old, it went with the motion thankfully but was wrecked and demoed afterwards, on talking with co workers afterwards, no one else had memory of a time lapse ( definitely was though ), unsure if pancake is slang, it was what they used afterwards to explain the experience, thanks for your reply Bob.

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