Help for MIT Global Time Series Web Page
Main Page
The main page shows frames for the different IGS analysis centers and regions
of the world. The analysis centers shown are
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IGSW -- IGS weekly combined solution. Derived from combination of Weekly
sinex files from IGS Analysis and Associate Analysis Centers. Available
from cddisa.gsfc.nasa.gov. igs\P\.snx
-
JPLW -- Jet Propulsion Laboratory weekly-averaged SINEX results
-
CODW -- European Center for Orbit Determination weekly averaged SINEX results
-
SIOW -- Scripps Institution of Oceanography weekly-averaged SINEX results
-
SIOD -- Scripps Institution of Oceanography daily results from GAMIT
H-files available at lox.ucsd.edu
When a region of the world is selected, the velocity field in the ITRF96
system is shown for the analysis center selected on the Main page.
Changing the analysis selection will change the velocity field displaced.
Clicking on invidual sites in the velocity field will bring up a display
of the time series used to derive the velocity.
Time series page
The times may be replotted using the options that appear at the bottom
of the time series page. It is also possible to overlay the time
series from two analysis centers. The second analysis center is shown
in red and the primary one in blue (the statistics on the plots referr
to the primary analysis.)
The site list on left-hand side may be use to directly plot the results
for a particular site and analysis center. (The center name should
be a link if the site is avaiable in the analysis from that center.)
Reference frame for analyses is based on the ITRF97 reference frame
as realized by the the IGS00P041.snx analysis.