top of page
Search
  • Writer's pictureDerrick Hasterok

Cassini Projection

The Cassini (a.k.a. Cassini-Soldner) projection dates to 1745 by César-François Cassini de Thury. It is an equidistant cylindrical projection and a handy projection for making globes—at least when one uses a narrow vertical wedge in the center of the map. I've used it here to display a global tectonics map constructed of my plate boundary model. The projection shown here has a central meridian at 70ºW and central latitude 90ºN. These parameters were chosen to emphasize the nearly continuous subduction from the southern tip of South America to the southern tip of New Zealand, responsible for the circum-Pacific ring of fire. There is a second orogenic system (Alpine–Himalayan Belt).

Tectonic map of the world shown on a Cassini projection

Also shown are topography (ETOPO1) and precipitation (CRU2.1) combined to produce the pseudo color base map, volcanoes (Smithsonian Global Volcanism Program) and earthquakes (NEIC).

96 views

Recent Posts

See All
bottom of page