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I remember in the 90's there was a conspiracy theory going around that the 'global elites' had created a massive submarine base - in the middle of the Amazon jungle, i.e. hundreds of miles from the oceans - specifically to use as a survival plan in case of a massive flood. There was even a site dedicated to the 'discovery' of photo's of the massive submarine, taken from a light airplane which crashed .. the camera was found and later the pictures were made available.

I wonder if the author of "Flood" had heard of this theory and incorporated it into his book. Try as I might I can't find any details about this jungle submarine base any more - seems its been wiped off the 'net.

Another thing I thought of is the Cataclysm as described by Szukalski, that weirdo. He posited that every 64,000 years, the Earth undergoes a massive upheaval due to "Gravity heat" which busts open the Earths' core and releases massive amounts of water from within. Now that there is actual scientific evidence of this whacky theory, I'm starting to get a bit more interested in finding that jungle submarine base .. ;)

> Try as I might I can't find any details about this jungle submarine base any more - seems its been wiped off the 'net.

That must mean it is true!

Well, there are free and almost free satelite photos of the entire Amazon jungle available. Thus, nothing is stopping you.

Yeah, I've whiled away a few ergs on the topic, but its an amusement more than a serious pursuit. It does amuse me that the memory hole is deep and wide, and this "jungle submarine base" conspiracy has fallen into the maw .. still, if there were an 'ultra-elite' class of people, you'd expect them to know all the details of the apocalypse before us plebes do ..

A 100 foot high canopy means concealing something in the Amazon would be pretty straightforward.

One can easily hide something that has less than 20 or so meters hight (because trees rarely get over that height), and smaller than a few trees in area. If the thing you want to hide is bigger than that, you'll have better luck in a cave, or disguising it as a rock and placing it in the middle of a desert.

Wow. Never heard of this book before, looks like a good read and actually kind of scary that this could be a reality (based off of the synopsis). The thought of the world slowly being swallowed by water leaking from beneath the Earth's surface really creeps me out.

It's a really good read, there's a follow up as well which I enjoyed but it didn't work quite as well as the first. The book runs through from the first days to about 30/40 years later and covers what the impact of the ever changing sea level does to civilisation.

This book was sufficiently depressing to turn me off to disaster weather news forever. Nightmarish even.

It is pretty grim, but after looking at a predicted sea level rise map I realised I'd be in a reasonably safe area for a while and that cheered me up a bit.

The existence of subterranean oceans is not based in reality at all. All this reference to oceans in the mantle is science journalist bullshit. There is no ocean at 700 km depth.

The paper refers to the mineral ringwoodite, for which the anhydrous formula is (Fe,Mg)SiO4. Hydrous ringwoodite has the capacity to take some OH groups in the mineral structure, probably in a coupled substitution with vacancies/defects/some trace element such as titanium. Recently a ringwoodite sample was found that had 1.5 weight % H2O in its structure. What that means is it is entirely unlikely that there will ever be free water in the mantle, because you can dissolve so much of it in the minerals. Free water can only exist when the minerals can not longer fit any more in them.

What the authors did was take some hydrous ringwoodite and put it in a diamond anvil cell and heat a bit of it with a laser. The bit they heated transformed into the minerals perovskite and ferropericlase, and amorphous material the authors interpret as quenched silicate liquid (i.e. glass, analogous to obsidian). The perovskite and ferropericlase have less capacity to dissolve H2O than the ringwoodite, so when ringwoodite breaks down, some H2O is releasd. However, instead of forming free water, the H2O reacts with the other minerals to form a silicate liquid (i.e. magma with some H2O dissolved in it). This reaction is referred to as dehydration melting: the reaction of a hydrous mineral phase to form other mineral phases and a silicate liquid. You dehydrate a mineral and form melt.

The authors then relate the mineral scale reactions to global scale seismic structure. Low velocity regions are observed when mantle downwells from above the 660 km continuity to below it. Low velocity zones are interpreted to be associated with the presence of silicate liquids. Thus, the authors suggest that downwelling of hydrous ringwoodite bearing mantle from above the 660 discontinuity to below it will result in a phase change to pervoskite + ferropericlase + silicate liquid, consistent with the presence of low velocity zones. The amount of silicate liquid produced is about 1%. You don't need much silicate liquid to make low velocity zones.

This entire story does not involve free H2O at any stage. Any reference to oceans is misleading.

Next we're going to be discovering weird blue circles under the earth's crust.

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