RAMS Final Velocity Product Documents
In order to capture the diverse velocity field of the Jakobshavn Glacier Basin multiple sets of RAMS Vphase parameters had to be used, resulting in multiple sets of overviews (ov_## files listed below). A detailed description of all the RAMS VphaseTool Phase I parameters (registration and creation of interferograms) was provided by the Vexcel Corporation, the developers of RAMS, and is available in addendum III of the BPRC Tech Report BPRC Tech Report also found in the 'Documents' link above.
In the creation of the interferograms, the three prominent parameters used for estimating a range of velocities are the 1) lower coherence threshold, 2) offset chip size and 3) offset search radius, all other default parameters were used. A description of the 'optimum' search radius and chip sizes is included below ('Optimal Search Radius and Chip Size' link).
README File
Readme file associated with each *.tar file. Please read to familiarize yourself with the contents of each file
Location of overviews (ov_*) for years 2000, 04, 05, and 06
Shows the location of each of the ov* files broken down in year (2000,04,05, and 06).
Location of 2008 overviews (ov_*).
Shows the location of each of the ov_* files for 2008.
Optimal Search Radius and Chip Size
Note: A chart of Search Radius and Chip Size parameter for individual overviews is forthcoming.