Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams

Details Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..dfd.fg006a&link_type=abstract

American Physical Society, 59th Annual Meeting of the APS Division of Fluid Dynamics, November 19-21, 2006, abstract #FG.006

Physics

Fluid Dynamics

Scientific paper

We use a variety of new and old methods, including Coherence Image Velocimetry, image reconstruction, data assimilation of satellite imagery and animation, to extract Jovian velocity fields (and their uncertainties) from image pairs taken with the Hubble Space Telescope. Velocities are derived from cloud displacements in the image pairs. Our methods go far beyond the traditional technique of deriving a velocity vector by setting it equal to an image pair's cloud displacement vector divided by the time between images. The images in some pairs were taken as few as 12 minutes apart. To understand why new techniques are needed, we note that the characteristic velocities are ˜30ms-1. Therefore, a cloud's displacement over 12 minutes is only 22km, which is less than half a pixel (and the spatial resolution in our observations was ˜5 pixels). To obtain sub-pixel resolution, it was necessary for us to use all of the data from all of the image pairs and to employ all of our techniques in an iterative manner. We outline how these methods work and how they can be applied to archived data sets of satellite imagery of the giant planets.

Affiliated with

Also associated with

No associations

Rating

Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraction of Velocity Fields from Telescope Image Pairs of Jupiter's Great Red Spot, New Red Oval, and Zonal Jet Streams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1311417