Fig. 1: The distribution of thermal springs in the world.
From: Global thermal spring distribution and relationship to endogenous and exogenous factors
World map of the digitized locations of the global thermal spring areas and their (a) calculated kernel density (axis-aligned bivariate normal kernel, evaluated on a square grid of 500 points and bandwidth of 10) and b maximum water temperature in Celsius degree if provided by Waring13 (map created with maps50 R package).
