Cassini finds Enceladus is a powerhouse
This graphic, using data from NASA's Cassini spacecraft, shows how the south polar terrain of Saturn's moon Enceladus emits much more power than scientists had originally predicted. Images credit: NASA/JPL/SWRI/SSI
(PhysOrg.com) -- Heat output from the south polar region of Saturn's moon Enceladus is much greater than was previously thought possible, according to a new analysis of data collected by NASA's Cassini spacecraft. The study was published in the Journal of Geophysical Research on March 4.
Data from Cassini's composite infrared spectrometer of Enceladus' south polar terrain, which is marked by linear fissures, indicate that the internal heat-generated power is about 15.8 gigawatts, approximately 2.6 times the power output of all the hot springs in the Yellowstone region, or comparable to 20 coal-fueled power stations. This is more than an order of magnitude higher than scientists had predicted, according to Carly Howett, the lead author of study, who is a postdoctoral researcher at Southwest Research Institute in Boulder, Colo., and a composite infrared spectrometer science team member.
"The mechanism capable of producing the much higher observed internal power remains a mystery and challenges the currently proposed models of long-term heat production," said Howett.
It has been known since 2005 that Enceladus' south polar terrain is geologically active and the activity is centered on four roughly parallel linear trenches, 130 kilometers (80 miles) long and about 2 kilometers (1 mile) wide, informally known as the "tiger stripes." Cassini also found that these fissures eject great plumes of ice particles and water vapor continually into space. These trenches have elevated temperatures due to heat leaking out of Enceladus' interior.
A 2007 study predicted the internal heat of Enceladus, if principally generated by tidal forces arising from the orbital resonance between Enceladus and another moon, Dione, could be no greater than 1.1 gigawatts averaged over the long term. Heating from natural radioactivity inside Enceladus would add another 0.3 gigawatts.
The latest analysis, which also involved the composite infrared spectrometer team members John Spencer at Southwest Research Institute, and John Pearl and Marcia Segura at NASA's Goddard Space Flight Center in Greenbelt, Md., uses observations taken in 2008, which cover the entire south polar terrain. They constrained Enceladus' surface temperatures to determine the region's surprisingly high output.
A possible explanation of the high heat flow observed is that Enceladus' orbital relationship to Saturn and Dione changes with time, allowing periods of more intensive tidal heating, separated by more quiescent periods. This means Cassini might be lucky enough to be seeing Enceladus when it's unusually active.
The new, higher heat flow determination makes it even more likely that liquid water exists below Enceladus' surface, Howett noted.
Recently, scientists studying ice particles ejected from the plumes discovered that some of the particles are salt-rich, and are probably frozen droplets from a saltwater ocean in contact with Enceladus' mineral-rich rocky core. The presence of a subsurface ocean, or perhaps a south polar sea between the moon's outer ice shell and its rocky interior would increase the efficiency of the tidal heating by allowing greater tidal distortions of the ice shell.
"The possibility of liquid water, a tidal energy source and the observation of organic (carbon-rich) chemicals in the plume of Enceladus make the satellite a site of strong astrobiological interest," Howett said.
Provided by
JPL/NASA
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Mar 08, 2011
Rank: 1.3 / 5 (12)
Material there consists mostly of light elements (H, He, C, N, etc). Heavy elements there are enriched in Uranium (U) and other (Xe, Th, U, Pu, etc) r-products from rapid neutron capture [3].
This is all explained in a new paper [4].
1. "Strange xenon, extinct superheavy elements and the solar neutrino puzzle", Science 195, 208-209 (1977).
2. "Isotopes of tellurium, xenon and krypton in the Allende meteorite retain record of nucleosynthesis", Nature 277, 615-620 (1979).
3. "Isotopic ratios in Jupiter confirm intra-solar diffusion", Meteoritics & Planetary Science 33, A97, 5011 (1998).
lpi.usra.edu/meetings/metsoc98/pdf/5011.pdf
4. "Neutron Repulsion," The APEIRON Journal, in press (2011) 19 pages
arxiv.org/pdf/1102.1499v1
With kind regards,
Oliver K. Manuel
Mar 08, 2011
Rank: 3 / 5 (2)
Mar 09, 2011
Rank: 3 / 5 (1)
Mar 09, 2011
Rank: 4.2 / 5 (5)
Enceladus doesn't have soil. Also, any residual radioactivity would be insufficient to produce this kind of heat output.
Mar 09, 2011
Rank: 2.6 / 5 (12)
Mar 09, 2011
Rank: 2.6 / 5 (12)
It's one thing to imagine that the current system of theories is great. To imagine that it cannot be superseded is a whole different matter.
What effort have people truly put into the creation of competing frameworks? When you consider that it's not permissible to even question many assumptions in physics today, then we've really narrowed the spectrum of theories that we can generate.
Mar 09, 2011
Rank: 3.6 / 5 (11)
Of course, who said otherwise?
Yyyyeah...
Aha...
Sure...
I'm sold.
Where do I sign up!
Sure is - let me sign up already!!
more...
Mar 09, 2011
Rank: 3.5 / 5 (13)
Um, quite a lot actually.
Really, why not? Isn't that what science does?
Humph! All that build up just to get to a deductive fallacy? I feel cheated!
Mar 09, 2011
Rank: 2.3 / 5 (9)
First there was Kristian Birkeland. Then, there was Nobel Laureate Hannes Alfven. And then, after him, Anthony Peratt, Wal Thornhill, Halton Arp, and more recently, Gerrit Verschuur (not to mention many, many others).
Between all of these investigators and the numerous publications in IEEE, there's easily enough published by now to formulate a new electrical framework which can fully explain our most modern observations. And yet, the public instead gets a gravitational framework where 95% of the matter is missing.
Perhaps there was an era where we could afford to imagine a universe with 95% invisible matter, but this current economy needs a framework which can facilitate actual problem-solving. And that means that it must actually be predictive of our observations (where a prediction is something that happens before the observation or experiment, btw).
You and others choose to be oblivious to the creation of this second framework.
Mar 09, 2011
Rank: 2.5 / 5 (8)
But, my original point is that you've convinced yourself that the ad hoc fine-tuning that results from the gravitational deduction IS an effort to investigate competing frameworks. That is fine-tuning. That is NOT creating a new scientific framework.
There are many publications where you can "sign up" to learn the electrical framework. You could start with learning the behavior of laboratory plasmas. You could inform yourself of the most modern radio telescope observations that we have of interstellar space, where Verschuur has observed the 35 km/s critical ionization velocity to be widespread.
Mar 09, 2011
Rank: 2.7 / 5 (7)
Actually, until you put some effort into learning these things, you will be incapable of identifying them in space. And this is the point really: So long as you convince yourself (and others) that there is nothing worth looking into, you are really just blinding yourself to the alternative. At the end of this process, you should not be stunned to find out that you believe in that which you permitted yourself to read about.
That is NOT science. It's a winnowing of the set of inferences through constriction of reading.
Mar 09, 2011
Rank: 2.6 / 5 (8)
Now, add in the problems with the plasma models which Hannes Alfven has gone to great lengths to attempt to correct. Plasma's VI curve never touches the V-axis. Thus, there exists an E-field at all points. Look it up. Plasmas NEVER behave as superconductors, and there is some -- albeit small, oftentimes -- E-field at all points.
Furthermore, the notion of frozen-in magnetic field lines may work for some special cases of plasmas, but Alfven called the approach "pseudo-pedegaogical": It's something which appears to work, but actually causes great confusion.
Mar 09, 2011
Rank: 2.8 / 5 (9)
By proposing that cosmic plasmas are basically electrically sterilized, you've just thrown away an entire laboratory science -- plasma physics -- which we could use to formulate this new framework. Why would we do this?!
It's done to serve the gravitational framework. And that's why this is no longer a search for truth. This has become a quest to create proofs for the gravitational framework.
I would go a step further and propose that if you go far enough into the future, our descendants will ridicule us for all of this silly behavior, and think of us as naive ... possibly even arrogant.
Mar 09, 2011
Rank: 1 / 5 (6)
The entire batch of elements that formed giant gaseous planet and their Moons was enriched in radioactive actinide elements (Th, U, Pu: Elements # 90, 92, 92) that generate heat by radioactive decay.
All elements heavier than Bi (element #83) were made the r-process - rapid neutron capture.
Historically the association of excess r-products with primordial light elements in the early Solar System was seen in:
a.) Carbon-rich inclusions of the Allende meteorite [R. S. Lewis, B. Srinivasan, E. Anders, Science190, 1251 (1975)];
b.) Carbon-rich inclusions of diverse types of meteorites [O. K. Manuel, Icarus 41, 312-315 (1980)]; and
c.) Jupiter [O. K. Manuel, Meteoritics & Planetary Science 33, A97, 5011 (1998)], as had been predicted 15 years earlier [O. K. Manuel and Golden Hwaung, Meteoritics 18, 209-222 (1983)]
Mar 09, 2011
Rank: 1.8 / 5 (5)
To some this sounds silly, but the original radioactive element that went into creating Earth were likely in the form of meteorites.
The fact that most probably came in small amounts of much larger bodies, does NOT mean that's the only way they were delivered to the growing planets.
Once in a great while (over billions of years) a large meteor could end up with a lot of uranium 238.
The half-life of 238 is about 4.3 billion years - yes about 80% the age of the solar system.
So if a meteor laden with several tons of uranium 238 hit Enceladus say 3 billion years ago, more than half would be left still melting the interior of the moon. Additionally the decay product of U238 is Plutonium itself radioactive.
Why not try and figure how much of this stuff would be required
Mar 09, 2011
Rank: 3.9 / 5 (12)
Either none of their work withstands objective scrutiny and/or some of their (valid) research has been cherry-picked and twisted by electric universe cranks to support their stupid dogma.
We get what the universe gives us, not cranks.
There is only one framework - the scientific method, which encompasses both observation, theoretical formulation, prediction and verification.
more...
Mar 09, 2011
Rank: 4 / 5 (12)
'My' framework is the scientific framework. See above.
Within the scientific framework, your EU postulate has no currency, just like the aether postulate has been shown to be incorrect, or neutron repulsion for that matter.
Nope, it's just the scientific method doing its job.
more...
Mar 09, 2011
Rank: 3.6 / 5 (12)
Why do you keep crapping on about new frameworks? A different framework to the scientific framework would be one where someone asserts something is true without any evidence and claims it to be reality. We've had this framework for much of our history and I dread the day if we ever go back to it.
Thanks, but my scientific knowledge is pretty well rounded. I don't do crankology.
more...
Mar 09, 2011
Rank: 3.9 / 5 (11)
I don't need to convince myself of anything, as I don't really care what makes the universe tick. I welcome all legitimate insights and research results. Results, BTW, that have many times disproved the electric universe nonsense, so why would I waste my time on it?
Obviously, since I don't do any direct research myself. The difference between you and me though, is that I'm widely read, am a critical thinker and apply logic filters to all my scientific consumption, whereas you are not a critical thinker, ignore logic and for some reason have become irrationally invested in a fringe notion. I've never understood that kind of behavior.
more...
Mar 09, 2011
Rank: 4 / 5 (12)
It is precisely science - the winnowing of a set of ideas which do not reflect observations.
By that, I see you mean let's muddy the waters.
Guess what? You need not wait for the future, we're already ridiculing you and your delusional cosmology.
Mar 10, 2011
Rank: 2.1 / 5 (7)
I'm completely familiar with all of the arguments which you've used to convince yourself to not read any further -- Leroy Ellenberger, Tim Thompson, APODNereid, Tom Bridgman, etc. I've interacted with all of these people firsthand, and most of them don't even understand the difference between electrostatics and electrodynamics. They still claim that charge would accumulate on the Sun, apparently not realizing that charge does not accumulate in electrodynamics.
That you've been convinced by them is really shameful. And that you are biased against competing cosmologies is plainly evident, as it's extremely easy to create a universe with just 5% observable matter.
Mar 10, 2011
Rank: 2.7 / 5 (7)
Mar 10, 2011
Rank: 4.5 / 5 (8)
How do you respond to the arguments put forward here about your Electronic model?
Mar 10, 2011
Rank: 2.3 / 5 (6)
Keep in mind that this debate has been going on for half a century now. And it started with Nobel laureate, Hannes Alfven -- the man who basically invented the MHD plasma models which are used to this day. By the end of his career, Alfven realized serious mistakes he made early in his career with those MHD models -- mistakes which are still encoded into the plasma models to this day.
When I approached this subject, I did not just adopt the views of a skeptic. I learned both sides of the debate, in great depth, by devouring all of the reading materials I could on the subject. I then went online and collected the best arguments against the EU, which I then humbly submitted to the theorists themselves. Over time, I came to see that they had responded to all of the objections.
Wal Thornhill has done nothing more despicable than adapted the functionality of a Crook's tube glow discharge to the spherical geometry of the sun. It works.
Mar 10, 2011
Rank: 2.1 / 5 (7)
There should be absolutely nothing controversial about proposing that the magnetic fields we observe permeating space's largest scales is an electrical current. We've known that electricity and magnetism were linked since the days of Maxwell, Faraday and Kelvin.
And, for the record, you guys might want to learn what a critical ionization velocity is, because this is how charge separation can occur in space. When a plasma beam is launched into a neutral cloud of gas, the gas becomes ionized and emits very specific redshifts at 50 km/s, 35 km/s, 13 km/s and 6 km/s.
Mar 10, 2011
Rank: 2.1 / 5 (7)
You guys have not dug very deep at all into this debate. And so it is for most people. It's impossible to convince people to read. People tend to read things which confirm their pre-existing beliefs.
Be careful what you are satisfied with. If we all permit ourselves to become satisfied with a universe that is only 5% baryonic, then we all may go to our graves with that same belief. Do not cast those of us who have a problem with the 95% invisible, hypothetical universe as "cranks." We should be encouraging people to think out of the box, when trying to solve the most challenging problems man has ever attempted.
Mar 10, 2011
Rank: 2.3 / 5 (6)
Mar 10, 2011
Rank: 5 / 5 (6)
Do you know of any papers by either where they explicitly endorse plasma cosmology or 'electric universe' theory by name? Preferably in a relevant peer reviewed journal (and no, I don't consider the Journal of Cosmology a peer-reviewed journal).
That should be simple enough, no?
Mar 10, 2011
Rank: 1 / 5 (6)
anhonestclimatedebate.wordpress.com/2011/03/10/hide-the-decline-explained/
As noted in my comment there, the behavior of climatologists in hiding the decline in global temperatures differs very little from the behavior of nuclear and particle physicists in hiding the solar neutrino puzzle.
http://arxiv.org/...2.1499v1
The problem is NOT the pawns caught hiding and manipulating temperature data.
The root of the problem is in Washington, DC where the US National Academy of Sciences reviews budgets of research agencies for Congress and allocates funds to organizations that report evidence for "CO2-induced global warming" and "oscillating solar neutrinos" in exchange for government funds, as former President Eisenhower warned might happen on day in his 1961 farewell address:
www.youtube.com/w...ld5PR4ts
With kind regards,
Oliver K. Manuel
Mar 10, 2011
Rank: 2.6 / 5 (5)
I have to nitpick on this: Neither "supports" the EU. If they did, I would know about it by now.
However, if you just looked into Verschuur's analysis of the WMAP data, I think you will come to see that his research nevertheless supports the EU.
Also, if you read Verschuur's excellent book -- The Invisible Universe -- you'll come away with a very large respect for outsiders in science. He is very respectful of history of science. After all, when radio waves were first observed coming from space, conventional scientists were convinced that it was a hoax (a radio wave is of course generated by electrons in motion -- aka electricity).
Verschuur's WMAP paper established dozens of correlations between WMAP hotspots and portions of the interstellar HI hydrogen filaments which he studied (!).
So, although he has not taken a "stand," per se, he appears to be the radio version of Halton Arp.
Mar 10, 2011
Rank: 3.3 / 5 (9)
Oh the irony!
I'm biased against DEMOSTRABLY false cosmologies. The evidence for dark matter is overwhelming, as has been thrashed out recently in anther thread. Dark energy evidence is also compelling, so the more you keep banging on about your 5% and EU-PC nonsense, the more ridiculous you look.
That's about it from me. You're not worth my time nor the oxygen to feed your delusions.
Mar 10, 2011
Rank: 2.6 / 5 (5)
Should read: "synchrotron radiation -- which is what we mostly view with radio telescopes -- is generated by electricity."
Mar 10, 2011
Rank: 2.6 / 5 (5)
You're redefining the word "overwhelming." The word "overwhelming" should be applied to the link between electric currents and magnetic fields ... Not to something which remains invisible and hypothetical. People have been trying to directly observe dark matter for 20 years now. One would imagine that if it was going to happen, that we'd have already done it. How much longer should we keep on looking? 100 years?
Are you aware that gravitational lensing is oftentimes impossible without a little dark matter sprinkled into the equation? This act of sprinkling some dark matter in has become widespread in cosmology. Some, by now, call it "mathematical glue."
These galactic rotation curves that inspired the basis for dark matter can be reproduced with two twisting Birkeland Currents, without the need for any invisible, hypothetical matter. This has been validated both by experiment and simulation.
Mar 10, 2011
Rank: 2.8 / 5 (6)
By not hedging their bets, with multiple conjectures meant to result in multiple frameworks, they basically place a gamble, using conventional science's reputation as their currency.
The fact that there is so much consensus on the Big Bang today means very little really. It's what one would reasonably expect if we were to train our scientists in just one world view. The public is asked to accept the implication that consensus means strength of argument. But, the implication is that this consensus was arrived at, after a thorough review of all of the options. When I talk to people online -- like you guys -- it's plainly evident that nobody has performed a thorough investigation.
Mar 10, 2011
Rank: 2.6 / 5 (5)
Yes, the microwaves emitted by plasmas are spiky synchrotron. But, thermalizing this synchrotron into a smooth black body bell curve requires no fairy dust or "new physics." We don't have to propose that the universe exploded, or anything dramatic like that. It can be for a more mundane plasma physics reason.
So, when Verschuur observes correlations between WMAP hotspots and the interstellar filaments, this is a very important observation. It suggests that the CMB is in fact a local interstellar radio fog, emitted as a consequence of cosmic Birkeland Currents.
Of course, the CMB was the reason why plasma cosmology was dropped to begin with ... And that is the ultimate irony.
Mar 11, 2011
Rank: 5 / 5 (6)
Read it. After I pointed out that he was speculating most if not all of the Plasma Cranking Sites removed the links to it because they were claiming he did actual experiments. Which was either a lie or sign of serious reading problems.
Or you might do something useful as those ideas don't produce the power claimed.
And still can't get the numbers to match the Suns real output. By a full order of magnitude.
For which there is no evidence.
Pure speculation without any actual evidence.
More
Mar 11, 2011
Rank: 5 / 5 (6)
Well they could look into it like I did. They will see smoke and mirrors.
And you should be even less surprised if you see a bunch of unsupported claims and a LOT of handwaving. Because that is what is on those sites.
I read those sites. They are Crank Sites.
And you aren't Alfven. He died. Never having proved his speculation. Neither have you.
Ethelred
Mar 13, 2011
Rank: not rated yet