Indeed. I sometimes picture Tau Ceti as having continents arranged roughly like Earth, but covered in ice from the poles to about latitude ±45°, and with no land bridge at Panama, South America shifted about 40° to the west and rotated 45° clockwise, and Antarctica dragged 35° north along the meridian 90° E. Then (very approximately):
- Avalon consists of the 48 contiguous states of the USA, Mexico, the Caribbean, Ecuador, Colombia, and Venezuela, with Canada under an ice-sheet. The River Celadon is ~the Mississippi, draining the proglacial lakes from southern Idaho to western New York.
- New Sunrise has the Mediterranean littoral, Mesopotamia, the Arabian Peninsula, and northern Africa, plus northern Europe under ice.
- Gogmagog is Oman and Iran to China and the Phillipines, with Central Asia and Siberia under ice.
- Ys is Japan, Hawai’i, and Micronesia, with Alaska and eastern Siberia under ice.
- San Pietro is consists of Peru, Brazil, the Guianas, Bolivia, Paraguay, Uruguay, and north-western Argentina, but all out of position.
- Zinfandel consists of Africa south of the Equator, western Madagascar…
- Alcuin consist of the Seychelles, eastern Madagascar, Mauritius, western Australia, the southern Malay Archipelago, and a coastal fringe of Antarctica in about the location of Île Saint Paul.
- Hell consists of the eastern third of Australia and the eastern half of New Guinea, New Zealand, the south Pacific, and a seriously misplaced strip of Chile and “south-western” Argnetina.
That implies a major discrepancy of population and GDP between the octants of Tau Ceti.
I suppose I ought to make a map.