Image Name                   :  d97mxew
Boundaries                   :  Lat 14N to 33N ; Lon 241E to 285E
Color Scale, Upper (Red)     :  16 arcseconds and higher
Color Scale, Lower (Magenta) : -16 arcseconds and lower 
Data Max value               :  38.1 arcseconds
Data Min value               : -37.3 arcseconds
Illuminated from the         :  East 

  This is an image generated from 2'x2' E/W surface deflections of the
vertical covering Mexico and surrounding areas.  Some interesting features 
to note about this image are:

  The mixture of purple (lows) and red (highs) through the western and south-central
(land) portion of the image is created by high-frequency geoid changes that 
are occurring in relation to similar high-frequency terrain changes throughout the 
Rocky and Sierra Madre Mountains.

  The sharply defined N/S positive signals (orange) off of the East coast of the 
United States are deflections induced by the edge of the continental
shelf.  Similar negative (magenta) signals are see off of the west
coast of Florida.

  The Middle America Trench, running along the west coast of Mexico, Guatamala
and El Salvador is causing the large negative (purple) structure along that
coast.

  Large bumps in the Pacific Ocean areas are the effect of sea mounts on the
deflections of the vertical.

das/dgm 4/14/97