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Target: Ganymede - Unnamed Sulcus Date of Observation: June 27, 1996 # of Frames in mosaic: 4

Description of the Area:

This sequence will aquire very high resolution images of a portion of bright terrain between Galileo and Perrine Regios. We expect to see grooved terrain, similar to what is seen in the Uruk Sulcus images, and will compare the orientations and morphologies to those seen in the Uruk Sulcus images. This area has not been imaged before at even a moderate resolution (moderate resolution images will be taken on orbit C9). This is an exploratory observation which will provide a richness of information about the nature of Ganymede's surface at the very highest resolution attainable with Galileo. Never before has the surface of an icy satellite been imaged at such high resolution.

Questions we hope to answer:

• What is the character of Ganymede's surface at such small scales?
• What is the detailed nature of the grooved terrain?
  
  • Are primary structures such as fault scarps preserved in these terrains?
    
  • To what extent has the grooved terrain been modified (by such processes as viscous relaxation, sublimation, or mass wasting)?
• Are very small craters preserved on the surface?
  • If so, this will be useful in determining the age of the surface.
    
  • It might also provide information about the depth and nature of the regolith on the surface of Ganymede.