van der Grinten I
Geocart menu class: Miscellaneous
Geocart family: van der Grinten
Neither conformal nor equal area
Meridians: Central meridian is straight. Other meridians are circular, equally spaced along the Equator and concave toward the central meridian.
Parallels: Equator is straight. Other parallels are circular arcs, concave toward the nearest pole.
Symmetry: Along the central meridian or the Equator
True along the Equator. Increases rapidly with distance from the Equator.
Great distortion of area near the poles
The world is enclosed in a circle.
World maps by the U.S. Department of Agriculture, the U.S. Geological Survey, the National Geographic Society, and others
Presented by Alphons J. van der Grinten (1852–?) of Chicago in 1898. U.S. patent obtained in 1904.
Van der Grinten (without l)
Lagrange is conformal.
Van der Grinten 11 has parallels curved to intersect meridians at right angles.
Mercator is conformal and has straight meridians and parallels.
Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.