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hypsometric tints
Hypsometric tints are colors used to indicate elevation, usually together with contour lines. They can be used to depict ranges of elevation as bands of color, usually in a graduated scheme, or as a color ramp applied to contour lines themselves. A typical scheme progresses from dark greens for lower elevations up through yellows/browns, and on to grays and white at the highest elevations. Hypsometric tinting of maps and globes is often accompanied by a similar method of bathymetric tinting to convey depth of oceans; lighter shades of blue represent shallower water such as the continental shelf and darker shades deeper regions.
== History ==
In his map of central Italy, c.1503, Leonardo da Vinci introduced the cartographic convention of using color to indicate changes in elevation.〔(Royal Collection - A map of central Italy (Leonardo da Vinci) )〕〔(Claim of da Vinci's first use )〕
The Scottish map firm John Bartholomew and Son is credited with popularizing the technique, and its color scheme has become conventional: dark greens at low elevations, progressing through yellows and ochers, to browns and then grays and white at the highest elevations.
At right is "The very earliest rendition of a bathymetric map of an oceanic basin. Matthew Fontaine Maury published this map in 1853 in ''Explanations and Sailing Directions to Accompany the Wind and Current Charts''."〔(NOAA Ocean Explorer: First bathymetric map printed )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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