[HN Gopher] Hydrothermal environment discovered deep beneath the...
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Hydrothermal environment discovered deep beneath the ocean
Author : Brajeshwar
Score : 65 points
Date : 2024-07-01 15:23 UTC (4 days ago)
(HTM) web link (www.sciencealert.com)
(TXT) w3m dump (www.sciencealert.com)
| pfdietz wrote:
| Nature article:
| https://www.nature.com/articles/s41598-024-60802-3
| svara wrote:
| *Scientific Reports article
| westurner wrote:
| "Discovery of the first hydrothermal field along the 500-km-
| long Knipovich Ridge offshore Svalbard (the Jotul field)"
| (2024) https://www.nature.com/articles/s41598-024-60802-3 :
|
| > _" The newly discovered hydrothermal field, named Jotul
| hydrothermal field, is associated with the eastern bounding
| fault of the rift valley rather than with an axial volcanic
| ridge. Guided by physico-chemical anomalies in the water
| column,_ ROV investigations on the seafloor showed a wide
| variety of fluid escape sites, inactive and active mounds with
| abundant hydrothermal precipitates, and chemosynthetic
| organisms. _Fluids with temperatures between 8 and 316 degC as
| well as precipitates were sampled at four vent sites. High
| methane, carbon dioxide, and ammonium concentrations, as well
| as high [87 /86] Sr isotope ratios of the vent fluids indicate
| strong interaction between magma and sediments from the
| Svalbard continental margin. Such interactions are important
| for carbon mobilization at the seafloor and the carbon cycle in
| the ocean_
|
| Does that help confirm or reject thi?s:
|
| "Dehydration melting at the top of the lower mantle" (2014)
| https://www.science.org/doi/10.1126/science.1253358 :
|
| > _They conclude that the mantle transition zone -- 410 to 660
| km below Earth 's surface -- acts as a large reservoir of
| water._
| pfdietz wrote:
| I don't think it has anything to do with that. The water in
| these zones is seawater convecting down, then up, through the
| hot rock.
| westurner wrote:
| So, unknown what's between 410km and these hydrothermal
| vents at 3km (3020m)?
| pfdietz wrote:
| I didn't say that, it's just that it isn't relevant.
| pictureofabear wrote:
| These kind of discoveries make me extremely hopeful that there is
| life on Europa or Enceladus
| freilanzer wrote:
| That would be a dream come true for me. Enceladus is
| fascinating. I'm even writing a scifi short story about it at
| the moment.
| solardev wrote:
| You're not the only one!
| https://en.wikipedia.org/wiki/Europa_Report?wprov=sfla1
| freilanzer wrote:
| Warning: Entering ecological dead zone.
| TheCraiggers wrote:
| I always wondered how that warning made any sense when it was
| given about 5 seconds before a leviathan attempts to swallow
| your sub whole. Obviously the huge sea monster didn't get the
| memo.
| dunefox wrote:
| Would you have preferred an invisible wall?
| TheCraiggers wrote:
| Not at all.
|
| But don't tell me I'm entering an ecological dead zone
| right before some ecology attempts to eat me.
| willy_k wrote:
| Could it be that the leviathan is the cause of the dead
| zone?
| solardev wrote:
| If it ate the entire ecology, how does it itself survive?
|
| Maybe by feeding on players...
| tantalor wrote:
| Ecology is a system of multiple living things. One living
| thing does not an ecology make.
| Interloper2099 wrote:
| "This area meets 5 of the 7 traits for terror in humans,
| are you sure what you are doing is worth it"
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(page generated 2024-07-05 23:01 UTC)