Isolines
Isolines are often used on maps to represent points of equal value. This is a list of some common (as well as obscure) types of isolines. The prefix "iso-" means "equal."
* 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
