The second paper, «Topographic Constraints on the Evolution and Connectivity of Titan's
Lacustrine Basins,» finds three important results using the new map's topographical data.
A 2100 - yr decadal - resolution salinity and aridity proxy record of
lacustrine ostracode - shell Mg / Ca ratios from a closed -
basin lake in the northern Great Plains shows statistically significant periodicities of ∼ 400, 200, 130, and 100 yr.