What is a good way to analyse irregular point observations, for displaying as
2D grids in the IDV?
UNAVCO archives high precision monument GPS positions (http://facility.unavco.org/data/data.html), and earth strain
measurements, at more than 800 stations in North America. I would like to analyse these randomly-located GPS changes
in displacement into a continuous 2D field, to compare to the stain measurements.
Does the IDV have data processing capability that can be used for this, or are Jython formulas for the IDV available, or
are there sources for other software to preprocess the GPS observations into 2D grids? The GPS data has three
components of displacement (x,y,z) as a function of time, amounting to 3D velocity vectors, and three error estimates. A
first approximation is a continuous field fitted to the values. Of course the interesting places really are where
continuity breaks down, as a faults.
Stuart
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Stuart Wier
UNAVCO Boulder, Colorado (303) 381-7450
The GEON IDV http://geon.unavco.org
For 4D exploration and display of your geophysics data
"You can go just so far without physics." - Don Anderson
