Isolines

Isolines

An isoline map is a map with continuous lines joining points of the same value. The prefix "iso-" means "equal."

This is a list of some common types of isolines.

isobar

A line representing points of equal atmospheric pressure

isobath

A line representing points of equal depth under water

isobathytherm

A line representing depths of water with equal temperature

isochasm

A line representing points of equal recurrence of auroras

isocheim

A line representing points of equal mean winter temperature

isochrone

A line representing points of equal time-distance from a point, such as the transportation time from a particular point

isodapane

A line representing points of equal transport costs for products from production to markets

isodose

A line representing points of equal intensity of radiation

isodrosotherm

A line representing points of equal dew point

isogeotherm

A line representing points of equal mean temperature

isogloss

A line separating linguistic features

isogonal

A line representing points of equal magnetic declination

isohaline

A line representing points of equal salinity in the ocean

isohel

A line representing points receiving equal amounts of sunshine

isohume

A line representing points of equal humidity

isohyet

A line representing points of equal precipitation

isoneph

A line representing points of equal amounts of cloud cover

isopectic

A line representing points where ice begins to form at the same time each fall or winter

isophene

A line representing points where biological events occur at the same time, such as crops flowering

isoplat

A line representing points of equal acidity, as in acid precipitation

isopleth

A line representing points of equal numerical value, such as population

isopor

A line representing points of equal annual change in magnetic declination

isostere

A line representing points of equal atmospheric density

isotac

A line representing points where ice begins to melt at the same time each spring

isotach

A line representing points of equal wind speed

isothere

A line representing points of equal mean summer temperature

isotherm

A line representing points of equal temperature

isotim

A line representing points of equal transport costs from the source of a raw material