[HN Gopher] Newly released footage of a 1986 Titanic dive reveal...
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Newly released footage of a 1986 Titanic dive reveals the ship's
interior
Author : isaacfrond
Score : 60 points
Date : 2023-02-17 10:34 UTC (12 hours ago)
(HTM) web link (www.npr.org)
(TXT) w3m dump (www.npr.org)
| GalenErso wrote:
| The Titanic's wreckage was supposed to be completely gone by
| 2030, according to a study, because of bacteria that eat metal.
|
| https://www.businessinsider.com/titanic-shipwreck-disappeari...
|
| What's become of that? We have less than seven years to go. (taps
| wristwatch)
|
| Another fun fact about the Titanic is that while it lies 3,800
| meters below the water, it lies at the bottom of a continental
| cliff, as you can see on this map: https://doyouremember.com/wp-
| content/uploads/2019/05/titanic...
|
| The Titanic's journey would have taken it West, so it would have
| continued to sail over deep waters for hundreds of nautical
| miles, but the place it happened to sink was situated just off an
| underwater peninsula in the continental plate.
| exebook wrote:
| Might be they estimated based how quickly bacteria eats pure
| metal, but it could be covered with something that protects it,
| dust, rust, another bacteria, some chemistry that is
| synthesized there over decades.
| shadowgovt wrote:
| My gut tells me the biggest source of error is they probably
| estimated it in a clean-room environment for the bacteria.
|
| Bacteria in the wild are perpetually in a war for survival
| with other bacteria (and larger organisms) that see them as
| an incredibly convenient source of aggregated biomass and
| carbohydrates. I'd expect the rate at which they chew through
| metal in the wild is attenuated by predators on them
| increasing predation as their numbers grow.
| amelius wrote:
| Or perhaps they used metal with extremely large surface area
| (e.g. lots of small particles).
| tablespoon wrote:
| > The Titanic's wreckage was supposed to be completely gone by
| 2030, according to a study, because of bacteria that eat metal.
|
| > https://www.businessinsider.com/titanic-shipwreck-
| disappeari...
|
| > What's become of that? We have less than seven years to go.
| (taps wristwatch)
|
| Considering that claim is cited to a republished version of an
| article [1] from the tabloid The Sun [2] (apparently from the
| credible-sounding "virals" section), I would guess the claim
| was exciting but wrong or misreported.
|
| [1] https://www.news.com.au/technology/environment/natural-
| wonde... (which, by the way appears to misidentify what looks
| like a literal illustration as an "undated video image of the
| Titanic wreck")
|
| [2] https://www.thesun.co.uk/living/2334495/the-titanic-
| wreckage...
| strangattractor wrote:
| It is pretty cold at that depth. I suspect may slow bacteria
| metabolism.
| exitb wrote:
| The bacteria causing the erosion have actually been discovered
| there and are named after the ship. It wouldn't be at all
| unusual to be somewhat wrong about that estimate in such a
| unique situation. It rather seems like a typical case of a
| researcher making a wild guess and media presenting it as
| proven fact.
| pomian wrote:
| Oxidation processes are studied in various environments,
| important to understand in complex issues such as acid mine
| drainage _. The chemical reactions are driven by a combination
| of biological (bacteria, eg.), physical, and chemical
| processes, in a feedback loop. After much research and study,
| one of the best practices is to keep such material submerged
| under water. (Deep enough to prevent oxygen transfer from
| surface.) In such deeper waters, the processes eventually stop
| or at least slow down, reaching a sort of, equilibrium. It 's a
| fascinating and complex field - in which mathematical modelling
| can help, but requires non linear differential equations for
| real world accuracy. (In the past, only linear methods were
| used, to simplify the models.) _ Waste water becomes acidic,
| this leaches out more metals from rocks, thus increasing
| available reaction material, thus increase in acidity, etc. Can
| cause cyclic blooms of highly contaminated waste water,
| followed by normal flows. (Similar reaction cycles happens
| under landfills, grain or coal stockpiles, etc.)
| 1101010010 wrote:
| Love Titanic history and all of its glory - a magnificent machine
| doomed by human arrogance and hubris (we even went so far as to
| call it "unsinkable").
|
| And for only $2 you can relive the experience first-hand in full
| 1996 CGI splendor!
| https://www.gog.com/en/game/titanic_adventure_out_of_time
| ChainReaktion wrote:
| For contrast, here's footage recorded last summer:
| https://www.youtube.com/watch?v=UCwg2h7i4Ac
|
| The company that collected it, OceanGate [0], is going back in
| May-June this year to continue cataloging the wreck and
| documenting its degradation.
|
| [0]: https://oceangate.com/
| exebook wrote:
| It seems that the wires prevent the drones to go further inside
| the ship, so I wonder if they can be made wireless? If radio is
| not working in such conditions maybe sonic or light signal can
| get through?
| shadowgovt wrote:
| At the time, the technology was not nearly trustworthy enough
| to run the millions-of-dollars ROV untethered.
|
| Nowadays, we could probably build it smaller, untethered, and
| semi-autonomous (but that hunch is not intended to undercut the
| tons of work it would take to do it).
| kioshix wrote:
| Full video on youtube:
| https://www.youtube.com/watch?v=kmfjjsRbKCY
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(page generated 2023-02-17 23:00 UTC)