File:Vortex-street-1.jpg

Original file ‎(2,549 × 4,574 pixels, file size: 1.73 MB, MIME type: image/jpeg)

Description
English: This Landsat 7 image of clouds off the Chilean coast near the Juan Fernández Islands (also known as the Robinson Crusoe Islands) on September 15, 1999, shows a unique pattern called a "von Kármán vortex street." This pattern has long been studied in the laboratory, where the vortices are created by oil flowing past a cylindrical obstacle, making a string of vortices only several tens of centimeters long. Study of this classic "flow past a circular cylinder" has been very important in the understanding of laminar and turbulent fluid flow that controls a wide variety of phenomena, from the lift under an aircraft wing to Earth's weather. Here, the cylinder is replaced by Alejandro Selkirk Island.
Français : Une allée de tourbillon de Karman dans les nuages provoquée par la rencontre entre du vent et une île des Juan Fernandez. Image prise par le satellite Landsat 7. Ce type de tourbillon est courament étudié au laboratoire, mais dans ce ces, ils ne font que quelques centimètres de long.
עברית: תופעת הערבולים של פון קרמן כפי שנצפתה מעל האי Juan Fernández ליד צ'ילה. האי יוצר הפרעה לרוחות וכך נוצרת התופעה.
Date
Source

http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=3328, Archive link

Original JPEG, Archive JPEG
Author Robert Cahalan, NASA/GSFC
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(Reusing this file)
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Captions

The clouds around Juan Fernandez Islands, showing a von Karman vortex street.

Items portrayed in this file

depicts

Kármán vortex street

Juan Fernández Islands

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inception

15 September 1999

File history

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Date/TimeThumbnailDimensionsUserComment
current15:24, 10 December 20092,549 × 4,574 (1.73 MB)TryphonHigher resolution, losslessly cropped from http://earthobservatory.nasa.gov/images/imagerecords/0/625/vortex_lg.jpg using jpegtran.
06:42, 25 March 20051,393 × 2,500 (1.84 MB)MatthiasKabel{{FPC}} ''This Landsat 7 image of clouds off the Chilean coast near the Juan Fernandez Islands (also known as the Robinson Crusoe Islands) on September 15, 1999, shows a unique pattern called a "von Kármán vortex street." This pattern has long been

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    • شارع كارمان الدوامي
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    • Kármánsche Wirbelstraße
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    • תיאודור פון קרמן
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