world maps with constant-scale natural boundaries

Using Enceladus as an extremely simple example, the premise of this poster is to show how CSNB maps may function as Maxwellian graphical stress diagrams [see upper left]. The constant gravitational pull of Saturn on the ice-shell moon causes extremely active shear cracks at the south pole. The opposite pole holds the oldest (most cratered, most inactive) terrain. The four-map column on the right shows results when the map-interruption line is placed at various critical longitudinal planes. Note the colored lines in the 3-D sketch on the left: the red line is the plane of maximum outward gravitational pull, “high tide”; the blue line is “low tide”; the green and magenta lines are inflection planes. These four lines are the edges of the four maps in the righthand column. The abstract for this poster is here.

Seems that the American Association of Geographers doesn’t have a self-evident system for accessing presented posters at their annual meetings, at least for 2021. So, I’m posting this here.

The world maps of the future are probably going to look a lot more like these than like an artfully positioned Oblique Mercator projection. At least when you’ve got ocean matters on your mind.

FYI: if you’re into analog swag, these maps are sized to mount back-to-back.

Map edges are continental divides of Africa, Asia, and Europe.

Relative sizes of watersheds around the map edge are directly comparable.

Inland basins attach at their lowest spout.

Relative sizes and internal proportions of oceans and seas are roughly accurate.

Many of the long-distance flights the Nautilus Live crew are talking about can be followed on this map.

This map corrects map-boundary imperfections in the earlier Enceladus maps.

Note the smoother curve at the both pole (left and right tips of the map), and the tangent-to-the-vertical cusp.

Enceladus centered on the north pole

Here’s the map in near-maximum resolution. (Click on map for full-size version)

(You might have to open it in a photo-editing software such as Photoshop. I have trouble opening this in Mac Preview.)

(Not sure if this will work; it’s the largest file I’ve yet posted.)

(Yeah. Doesn’t want to open on screen. Try right-clicking on the map and select “download linked file.”)

Suggestions welcome for how to fix this posting glitch. EDIT: the download problem appears to be native to my home computer. Enjoy the map!