[HN Gopher] Newly released footage of a 1986 Titanic dive reveal... ___________________________________________________________________ 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 ___________________________________________________________________ (page generated 2023-02-17 23:00 UTC)