Author/Authors :
Lorenz، نويسنده , , Ralph D. and Stiles، نويسنده , , Bryan W. and Aharonson، نويسنده , , Oded and Lucas، نويسنده , , Antoine and Hayes، نويسنده , , Alexander G. and Kirk، نويسنده , , Randolph L. and Zebker، نويسنده , , Howard A. and Turtle، نويسنده , , Elizabeth P. and Neish، نويسنده , , Catherine D. and Stofan، نويسنده , , Ellen R. and Barnes، نويسنده , , Jason W.، نويسنده ,
Abstract :
Cassini RADAR SARtopo and altimetry data are used to construct a global gridded 1 × 1° elevation map, for use in Global Circulation Models, hydrological models and correlative studies. The data are sparse, and so most of the map domain (∼90%) is populated with interpolated values using a spline algorithm. The highest (∼+520 m) gridded point observed is at 48°S, 12°W. The lowest point observed (∼1700 m below a 2575 km sphere) is at 59°S, 317°W: this may be a basin where liquids presently in the north could have resided in the past. If the deepest point were once a sea with the areal extent of present-day Ligeia Mare, it would be ∼1000 m deep. We find four prominent topographic rises, each ∼200 km wide, radar-bright and heavily dissected, distributed over a ∼3000 km arc in the southeastern quadrant of Titan (∼40–60°S, 15–150°W).
