The Wal Thornhill Electric Universe May Reader
1997 May
- THOTH
-A Catastrophics Newsletter-
VOL I, No. 13
May 16, 1997
EDITOR: Michael Armstrong
PUBLISHER: Walter Radtke
CONTENTS:
THE MYTH OF THE CENTRAL SUN (3)...........David Talbott
NEWS ITEM: Aviation Week & Space Technology
Comments ..............................Wal Thornhill
EUROPA PREDICTION AND DISCUSSION..........Wal Thornhill
BOOK ANNOUNCEMENT
Controversy--Catastrophism and Evolution:
The Ongoing Debate
PLASMA SCIENCE AND TECHNOLOGY URL's.........Ian Tresman
-----------------------------------------------
NEWS ITEM: Aviation Week & Space Technology
Wal Thornhill (walt at netinfo.com.au)
In the same issue of Aviation Week & Space Technology (Feb
3, 1997) that was referred to concerning Europa's terrain
(should that be Eurrain?), there is another item headlined -
"Twisters" Found In Stellar Clouds. Accompanying the
article are two stunning photographs from the Hubble Space
Telescope (HST) of the Lagoon Nebula.
[
http://oposite.stsci.edu/pubinfo/PR/96/38.html].
Following is a partial quote from the report:
- 'Analogous to Earth's tornadoes, the large difference in
temperature between the hot surface and cold interior of the
interstellar clouds, combined with the pressure of
starlight, may produce strong horizontal shear to twist the
clouds into their tornado-like appearance. While the spiral
shapes suggest the clouds are twisting, future observations
will be needed to confirm that.'
I would like you to note the exceedingly weak explanation
for the formation of the "twisters". It is yet another
manifestation of astronomers clinging to simple gas models
rather than more complex plasma models. It should also
be noted that earthly tornadoes are not well understood
either because, I would suggest, electrical effects are
ignored. Helical filaments are a natural configuration of
current carrying plasmas and are seen in the powerful jets
emanating from active galactic nuclei. I have no doubt that
the clouds in the Lagoon Nebula will be found to be twisting
(rather than being some pressure wave effect).
One of the telling arguments for the veracity of recent
planetary interactions is the recurring helical, serpentine
imagery associated in mythology with the planetary gods and
in particular, Jupiter's corkscrew thunderbolts.
-------------------------------------------
EUROPA PREDICTION AND DISCUSSION
[Wal Thornhill wrote]:
Back on 17 Jan, I posted an item about what I expected would
be found on the closer images of Europa.
The earlier post ran, in part, as follows:
- Since so many of the moons of the outer planets have similar
markings, I can visualize a situation where they may have
repeatedly gotten in the way of a large discharge between
the gas giant planets and other bodies, like Venus or Mars.
The Saturnian scenario has not yet dealt with the minor
players in the celestial drama, but the moons of Jupiter and
Saturn must have been swarming around between them. If
Europa, for instance, had come between Venus and Saturn (for
argument's sake) while Venus was the focus of plasma streams
from Saturn, then Europa would have been entwined (and I use
that word deliberately) in the interplanetary plasma
"ropes". As I have said of the markings on Venus, when the
plasma ropes are constrained to flow parallel to the surface
of a planet (or moon), the result is a number of parallel
marks or scars often running for great distances. The
precise appearance of the scarring depends on many factors:
the dielectric properties of the surface material, gas pressure
at the surface, etc.
The argument is strengthened when it is remembered that even
the tiny moons of Mars exhibit linear scarring and circular
craters.
Europa seems to have suffered many episodes of electrical
scarring judging by the multiple layers of crisscrossing
linear features. This would be expected if its orbit brought
it repeatedly into the danger zone between Saturn and Venus.
Electrical scarring seems to follow the law of fractals. So
I would expect the new closer up shots of Europa to show
similar scars down to the limit of resolution. That is,
trenches consisting of circular craters, possibly being so
close together as to appear continuous; levees on each side
of the trenches; the parallel "racetracks" to be composed of
many trenches, side by side.
*****
[Response by James G. Acker]:
Wal,
Did you see the images released on April 9? The ones with
the "ice floes" that have broken into pieces, but where you
can still see the pattern continued on the broken pieces?
My question to you is--given the fact that the surface is
clearly active, does that in any way change your
interpretation of ANY of the features? I.e., can you grant
that maybe more than one type of process is at work on
Europa?
*****
[Response by Dave Talbott]:
Can't speak for Wal, but I spent about 45 minutes studying
the incredible recent close-up pictures of Europa. Clearly
there has been more recent activity on Europa than any
astronomer had imagined prior to the Voyager probes. There
are significant sections of the surface which have been
re-arranged by the movement of ice. These in particular
put a huge exclamation point the long, narrow channels,
whose formation COULDN'T be due to ice movement or any
geological process "deep within the planet," as the
planetary geologists had claimed.
Where melting has occurred and sheets of ice have been
randomly shifted about, you can a get a very dramatic
picture as to how irregular the spacing is between the
broken fragments under such conditions-literally nothing
like the thousands of narrow channels running side by side,
some up to hundreds of kilometers--which geologists had
tried to explain by fracturing and subtle movements of the
ice. And notice that in the fields of formerly melted ice,
after the various fragments had been frozen into place
again, additional channels were carved out, up, down, and
over the previous fragments. The consistent pattern of
these channels suggests an instrument being dragged along
the surface to plow out the long, parallel furrows. Try as
I may, I could not see anything in the character of the
channels to suggest internal geology. That recent chaotic
motions of planets and their moons might account for the
catastrophic melting and re-freezing would seem self-
evident.
*****
[Wal Thornhill]:
Jim,
Dave has effectively answered the question for me while I
was in Melbourne. The surface was recently active with both
electrical sculpting and melting. The evidence for an
episode of melting and re-freezing of the ice is graphically
depicted in photo P-48526. It must be water ice for the
creation of ice floes. Satellite photographs of Antarctic
sea ice breaking up do not show parallelism, constancy of
width, levee banks, the dark-light-dark appearance, or
anything to match the scale of the "cracks" on Europa.
Certainly nothing to match the appearance of "freeways".
The larger "cracks" range up to 70km in width and stretch as
far as 3,000 km in straight or curved paths across Europa's
surface. When seen in close-up, the "cracks" look like
furrows. The best conventional explanation for this
appearance is some form of gas venting through the cracks
from below. But the material vented had to be "dirty" to
provide the colouration of the levees. It had to be
remarkably consistent over great distances. Then clean ice
had to fill the bottom of the "crack" to give the bright
centre line. (I would not expect to see any dark central
lines of dirty ice beneath the furrows when seen in cross
section where the ice floes have broken away. The photos are
not yet sufficiently detailed to test this suggestion).
The lightning discharge hypothesis is the only one to
explain all of the observed linear features from the
smallest to the largest scale. The central line is bright
because that is where the lightning vapourized the ice to
blast it outwards and form the levees. We are looking at a
clean bed of ice at the bottom of the channel. The
colouration of the levees may come from shock heating and
rapid cooling of the ice and any resulting chemical changes
in dissolved or suspended material. (The same mechanism that
formed the green glass beads found near rilles on the Moon).
The larger furrows stand out as much more deeply coloured
than their surroundings. So it may be that the electric
discharges that created them were sufficiently intense
to cause nucleosynthesis in the form of the conversion of
oxygen atoms (from the water) to sulphur. Elemental sulphur
takes many colours ranging from yellow through red to black
(look at Io's surface) and could account for the reddish
colouration of the ejected material. Alternatively, and I
think less likely, the coloured material may be exogenous
and implanted by the discharge itself (as described by Ralph
Juergens).
Of course, when we finish discussing Europa, we have the
linear features on Ganymede and Callisto to explain--not to
mention the moons of Saturn, Neptune and Uranus.
*****
Wal Thornhill responded to further comments by James Acker:
[WT] The surface *was* recently active with both electrical
sculpting and melting. The evidence for an episode of
melting and re-freezing of the ice is graphically depicted
in photo P-48526. It must be water ice for the creation of
ice floes.
[JA] Well, that was expected. Good that we agree.
[WT] Satellite photographs of Antarctic sea ice breaking up
does not show parallelism, constancy of width, levee banks,
the dark-light-dark appearance, or anything to match the
scale of the "cracks" on Europa.
[JA] I don't think we can compare the sea ice of Antarctica
or the Arctic to Europa. The scale of heating is
dissimilar. Europa is postulated to have the same kind of
heat source as Io, though at a lesser intensity. Because
it's internal, it will have a different surface manifestation.
Believe it or not, "Aviation and Technology
Week" (or something similar) had an article on Europa. It
must be a weekly, because it was the same pictures I saw on
the Web. My office-mate gets it. The scientists are already
describing what they are seeing in the long ridge systems as
cracking, upwelling, and refreezing. I'm not surprised by
that. All I can say is that I think the lava lake analogy
is apt.
[WT] I used the Antarctic sea ice description because it's
the one often used as an analogue of the Europa markings and
in a book I saw in Melbourne, it had the photographs side by
side for comparison. There are close-ups of Europa which
show the same features and which I accept as fractured ice.
P47170 is an example with a circular pattern and wedge-
shaped cracks evident. I still think that the number of
special conditions required to satisfy the appearance, range
of sizes and sheer number of linear features argue against
the standard mechanism.
Certainly nothing to match the appearance of "freeways".
The larger "cracks" range up to 70km in width and stretch as
far as 3,000 km in straight or curved paths across Europa's
surface. When seen in close-up, the "cracks" look like
furrows. The best conventional explanation for this
appearance is some form of gas venting through the cracks
from below. But the material vented had to be "dirty" to
provide the coloration of the levees. It had to be
remarkably consistent over great distances. Then clean ice
had to fill the bottom of the "crack" to give the bright
centre line.
[JA] Looking very closely, I'm not sure of that. We may
be only seeing light and shadow. I say that based on the
appearance of the close-up and the cracks on the floes.
[WT] To get some idea of the coloration you need to look
at the global colour images where the contrast between the
reddish "cracks" and the white surface is quite marked.
[JA] Gotta delete the rest, sorry. I know you mentioned
Ganymede and Callisto. Ganymede is supposed to be ice and
rock, and Callisto doesn't have a lot of lines, just a lot
of craters. At least I think they're craters.
*****
[WT]
In the article "Strange Forces Alter Europa's Terrain" in
Aviation Week & Space Technology (Feb 3, 1997) and referred
to by Jim Acker, three forces are seen as shaping the moon's
surface. They are: lateral spreading of surface plates;
water vulcanism; and a mysterious local obliteration
process. I quote from the NASA description:
- "This is the highest resolution picture ever taken of the
Jupiter moon, Europa. The area shown is about 5.9 by 9.9
miles (9.6 by 16 kilometers) and the smallest visible
feature is about the size of a football field. In this
view, the ice-rich surface has been broken into a complex
pattern by cross-cutting ridges and grooves resulting from
tectonic processes. Sinuous rille-like features and knobby
terrain could result from surface modifications of unknown
origins. Small craters of possible impact origin range in
size from less than 330 feet (100 meters) to about 1300 feet
(400 meters) across are visible."
Notice the use of the words "sinuous rille-like features".
The accompanying image:
[
http://www.jpl.nasa.gov:80/galileo/europa/p48227.html]
shows detail down to a resolution of 230ft. It looks as if
the resurfacing has been caused by fracturing of the ice,
floating apart and re-freezing of the exposed water. The
re-frozen surface is more lightly scarred by furrows
(sinuous rilles?) which suggests that a short-lived thermal
and/or torsional event occurred during the scarring process.
The edges of the cracks are sharp. The distinction between
cracking and furrowing is easy to see and to term the
furrows evidence of water vulcanism is, in my opinion,
stretching the imagination past the elastic limit. The
furrows are no respecters of existing topography and the
levees are so consistent in appearance over long distances
that it begs explanation by the water vulcanologists as to
how this might be achieved by eruption of a fluid.
A rough calculation from the dimensions of one of the
furrows shows that the levees are formed solely from the
material excavated from the channel. It does not require
additional matter from beneath the crust nor does it
require subsidence of the fluid to leave the central
channel. This suits the electrical discharge formation
process, as does the uniformity over long distances and the
disregard for existing surface topography. The arcuate
nature of the longest furrows on Europa may also be
consistent with the influence of the self-induced magnetic
field of a plasma discharge on the motion of the discharge.
Many of the moons of Jupiter and Saturn exhibit the same
kind of linear (often parallel) scarring, even though their
sizes and composition vary markedly. Some moons featuring
such scars are so small that to talk of volcanic features is
nonsense.
As I remarked in an earlier posting on the
subject, I propose that many of the moons of the gas giants
were probably unfortunate enough to become secondary
electrodes in an interplanetary discharge between planets.
In such an event, since a moon is a better conductor than
surrounding space, plasma ropes will twine around the moon,
ripping charge carriers (electrons and ions) from the
surface and forming circular craters, rayed craters, and
furrows (or rilles) in the manner described by Ralph
Juergens for the Moon. The precise nature of the scarring
(rilles, circular craters, rays, etc.) will be determined
largely by the characteristics of each moon's surface, but
the hallmarks of electrical machining will be evident.
When it comes to the proposed plasma discharge experiment in
an evacuated chamber with magnetized spheres, it would be
worthwhile to include an extra sphere, representing a moon,
between the cathode and anode, with an electrical connection
so that its voltage may be varied. In this way it may be
possible to photograph the kind of effects to be expected on
an object like Europa.
Wal Thornhill
---------------------------------------------
bold added, Paulina W
Dr. Cj Ransom did zap an aluminum plated ball in an experiment, and he got long furrow-like dark lanes where the electric arc separated and travelled across the surface of the ball.