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Planet X: TUNGUSKA as Example

Was thread Re: Asteroid hit the Earth in 2039?

In Article <> David Bos wrote:
> Tunguska is the most obvious example: hit in a very
> remote area but explosion detected all over the globe
> as seismic waves, and after effects (dust, lit up night sky
> and such) seen half across the globe. ... It didn't actually
> impact but exploded a few kilometers above ground
> level, presumably because is was made of light material
> (maybe a comet).

In Article <> Paul Dietz wrote:
> No, the Tunguska object is thought to have been stony.
> A comet would have exploded much higher in the
> atmosphere.

Tunguska was not caused by a meteor or comet.  It was a methane gas
explosion, caused by a pocket of gas released during an earthquake.  The
Zetas have explained, and the Russians have reached the same conclusion:

    Methane gas occurs naturally, a result of the
    decomposition of organic materials. Landfills
    must vent this or experience explosions. Some
    humans know they can light and briefly burn
    their farts. Humus or accidentally buried organic
    material is a source of methane gas, and if not
    vented, this attempts to rise, being light, and
    will pool if trapped. Siberia was once lush, a fact
    the carcasses of mastodons reveal, as their
    bellies are full of grass. Flash frozen and covered
    with volcanic dust, organic material lies as a
    potential. Where Siberia may appear to be a frozen
    wasteland, the center of the Earth is hot, and
    decomposition of trapped matter, proceeding
    slowly but over a long time, can accumulate a
    large, trapped pool of methane gas. Released due
    to a shift in the Earth's crust and encountering a
    raise in temperature sufficient to act as a spark, this
    would explode, with the size of the explosion in
    proportion to the volume of violently venting gas.
        ZetaTalk™, Tunguska

North Sea wreck in Methane Mystery
BBC News, November 29, 2000

    A trawler found at the bottom of the North Sea may have
    been sunk by a massive and very sudden release of methane
    gas, scientists speculated on Wednesday.

The Tectonic Interpretation of the 1908 Tunguska Event
April 23, 2001, Andrei Yu. Ol'khovatov, Russia, Moscow

    The Tunguska spacebody explosion simulation
    undertaken by Victor Korobeinikov, corresponding
    member of the Russian Academy of Sciences, with
    co-workers at the Academy's Computer Center has
    shown the internal energy of the spacebody to be
    commensurate with its kinetic energy to produce the
    existent forest fall. In plain language, this means that
    the Tunguska meteorite had to be an enormous block
    of super-explosive! Moreover, it's possible to
    demonstrate that the explosion of the hypothetical
    Tunguska body must be practically completely due to
    its internal energy! It's because the shape of the treefall
    reveals the presence of a significant spherical
    component of the air-shock wave. But due to the law
    of a conservation of a momentum, the explosion due
    to a kinetic energy don't produce a spherical air-shock
    wave (a total momentum of a spherical air-shock wave
    is zero, while the total momentum of the bolide's
    generated air-shock waves is equal to the momentum
    of the disintegrating meteorite). The absence of the
    spherical component is clearly seen. In there the
    air-shock wave of the "Tunguska meteorite" (the
    latter is at 3 km/s speed, i.e. practically already
    transferred all his momentum to air-shock waves) is
    as must be - the conical one, which can't produce
    the shape of the Tunguska forest fall!

    ... Some cases of the ignition of wood bedding were
    reported up to 34 km from the epicenter and even
    probably farther. But according to the Tunguska
    meteorite model it means that everything alive would
    completely burn at the epicenter. For example,
    according to the Tunguska meteorite model, the
    radiant exposure at the distances 5-9 km from the
    epicenter is about 300 J per sq. cm. It means that
    right at the epicenter the radiant exposure is about
    1200-1700 J per! In reality many groups of
    trees survived at the epicenter. Moreover, some of
    the single standing trees were without any traces
    of burn!

    ... Other eyewitnesses from the epicentral area gave
    similar reports. ...  Many other eyewitnesses also
    reported about luminous phenomena (columns,
    stripes, lightning, flame, red sky glowing, etc.) which
    hardly resembled the meteorite fall.  Remarkably, that
    even supporters of the "meteorite fall" have to recognize
    that practically nobody of numerous witnesses saw
    any trail left by the "Tunguska fireball"...