Definition

1. Noun:
   • A line on a map connecting points of equal value for a specified variable: An isopleth is a cartographic line that links locations sharing an identical measurement or value for a particular meteorological, geographical, or scientific quantity.

Usage Examples

• Noun:
  • The weather map uses an isopleth to show areas with the same atmospheric pressure.
  • Climatologists analyzed the isopleth representing annual rainfall to identify drought-prone regions.

Advanced Usage

• In scientific modeling: Isopleths are crucial for visualizing gradients and distributions in fields like meteorology, oceanography, and environmental science.
  • The model's output was a series of isopleths depicting predicted pollution concentrations.

Variants and Related Words

• Isoline (n): A general term for any line on a map or chart connecting points of equal value; often used synonymously with isopleth.
• Contour line (n): A specific type of isoline connecting points of equal elevation above a datum, typically used in topographic maps.
• Isobar (n): A specific type of isopleth connecting points of equal atmospheric pressure.
• Isotherm (n): A specific type of isopleth connecting points of equal temperature.

Synonyms

• Contour: Often used interchangeably in a general sense, though "contour" is more specific to elevation.
• Isoline: The direct synonym in technical cartographic and scientific contexts.

Related Phrases

• Isopleth map (n): A map that utilizes isopleths as its primary method of displaying spatial data.
  • The geographer created an isopleth map to illustrate temperature variations across the continent.

Noun

1. a line drawn on a map connecting points having the same numerical value of some variable