Vette Kelvin-Helmholz wolken in Alabama
Foto en video weer / natuur / wildlife / landschappen
Vette Kelvin-Helmholz wolken in Alabama
QUOTE
While driving through Birmingham, Alabama, Redditor alison_bee couldn’t help but notice the bizarre, repetitive wave shapes appearing in the clouds near the horizon. While these strange cloud formations look otherworldly, they’re an example of what’s called Kelvin-Helmholtz instability  which is a pretty awesome name for a spectacular phenomenon.
Bron: geekosystem
Bron: geekosystem
linkje: http://www.geekosystem.com/kelvin-helmholtz-waves/ | Gewijzigd: 19 december 2011, 12:56 uur, door Roan
marcel`westland
Lid
Woonplaats: Honselersdijk (Zuid-Holland)
Berichten: 1483
Lid sinds: 26 aug. 2009
Citaat van SvanWeenen, dinsdag 20 december 2011, 20:10 uur
Oh... Wat is dat... Dat ziet er mooi uit!
Iemand een mooie verklaring hoe zoiets kan ontstaan?
Echt bijzonder
Hier een quote van deze site:
'These are indeed Kelvin-Helmholtz waves. What is happening is that the nocturnal near-surface layers (lowest 50-100m) of the atmosphere are much more stable than the layers above it in the mornings. Until the ground heats up due to daytime heating, the surface layers stay more stable than the air over it. Kelvin-Helmholtz waves occur when the wind shear between the layers destabilizes the topmost portion of that stable layer, and entrains the air into the unstable layer. What you see is stable air being lifted, cooled, and condensed so that this process becomes visible, though this commonly happens many places without being visible.'
Iemand een mooie verklaring hoe zoiets kan ontstaan?
Echt bijzonder
Hier een quote van deze site:
'These are indeed Kelvin-Helmholtz waves. What is happening is that the nocturnal near-surface layers (lowest 50-100m) of the atmosphere are much more stable than the layers above it in the mornings. Until the ground heats up due to daytime heating, the surface layers stay more stable than the air over it. Kelvin-Helmholtz waves occur when the wind shear between the layers destabilizes the topmost portion of that stable layer, and entrains the air into the unstable layer. What you see is stable air being lifted, cooled, and condensed so that this process becomes visible, though this commonly happens many places without being visible.'
