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  maandag 30 april 2018 @ 15:11:00 #226
230450 ShevaJB
What have we become... Animals
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Dat zal wel een mooi knalletje geven.
Doe'k 't now wel, doe'k 't now niet of krieg ik spiet

Op vrijdag 15 januari 2010 10:36 schreef boudemaniak het volgende:
Eindbaas ^O^
0s.gif Op vrijdag 25 augustus 2017 11:42 schreef Resistor het volgende:
Als het water maar onder een druk die hoog genoeg is er in gepompt wordt kan het geen kwaad.

Maar als ik het tabelletje van http://www.engineeringtoolbox.com/boiling-point-water-d_926.html moet geloven zit je bij 1000psi/68.9bar 'nog maar' op 285C, volgens mij is dat nog 1000K te weinig om nuttig te zijn om magma te koelen zonder direct in stoom te veranderen.

En dan moet niet de druk wegvallen...
10 km diep zit je al op 1000 bar door de zwaartekracht.
  Moderator woensdag 15 augustus 2018 @ 09:57:53 #228
8781 crew  Frutsel
Yellowstone volcano gas WARNING: USGS warns of poisonous gas emissions in National Park

Yellowstone National Park is home to thousands of hot springs and geysers spewing clouds of mostly harmless, rotten-smelling gases.

But in the deeper parts of the Yellowstone wilderness where tourists are told not to stray, toxic fumes of lethal gas are powerful enough to kill.

USGS scientists studying the Yellowstone volcano have warned of the ever-present danger in the latest issue of the weekly Yellowstone Caldera Chronicles.

USGS expert Jennifer Lewicki, who is based in California’s Menlo Park, said dozens of Yellowstone animals have dropped dead over the years as a result of inhaling toxic fumes.

The two killers are poisonous levels of carbon dioxide (CO2) and hydrogen sulphide (H2S), which are concentrating around ground levels.

Most of the gases emitted by Yellowstone’s network of hydrothermal pipes are harmless water vapour gases.

But hiding in these emissions could be concentrations of toxic gases, which have proven to be lethal to animals.

CO2 is particularly dangerous because it is an odourless and colourless gas.

H2S on the other hand is easier to spot thanks it to its distinctive smell of rotting-eggs but the gas is also colourless and flammable.

Both gases typical pool around ground levels because they are heavier than air.

This can be absolutely lethal to animal grazing in the parks fields with their noses close to the ground.

Ms Lewicki wrote: “In most circumstances, wind will dilute carbon dioxide and hydrogen sulphide to low concentrations that do not threaten the health of people and animals.

“In certain very stable atmospheric conditions, though, these relatively heavy gases can accumulate in low-lying areas and pose a serious hazard. “

This appears to have been the case in 2004 when a number of dead bison were found in the Norris Geyser Basin following a cold and still night.

The animals bore no physical markings of a predator attack and the animals appeared to have died suddenly - and as a group.

Yellowstone officials later surmised the atmospheric conditions on the night allowed for the toxic gases to pool around the animals’ grazing area, slowly killing the wild beasts.
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