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Related to Isopleths: isohyet, isoclinic lines


(Physical Geography) a line on a map connecting places registering the same amount or ratio of some geographical or meteorological phenomenon or phenomena. Also called: isogram or isoline
[C20: from Greek isoplēthēs equal in number, from iso- + plēthos multitude, great number]


(ˈaɪ səˌplɛθ)

a line drawn on a map through all points having the same numerical value, as of a population figure or geographic measurement.
[1905–10; < German Isoplethe (1877) < Greek isoplēthḗs equal in number]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.isopleth - a line drawn on a map connecting points having the same numerical value of some variable
isobar - (meteorology)an isogram connecting points having equal barometric pressure at a given time
isochrone - an isogram connecting points at which something occurs or arrives at the same time
isoclinal, isoclinic line - an isogram connecting points of equal magnetic inclination
isohel - an isogram connecting points receiving equal amounts of sunshine
isotherm - (meteorology) an isogram connecting points having the same temperature at a given time
line - a spatial location defined by a real or imaginary unidimensional extent
References in periodicals archive ?
Estimates of the 95% KDE isopleths between both field sites averaged ([+ or -]se) 9.
boddartiwasunder-fishing as the yield isopleths with Lc/L[?
2) if the source quarry is monotonically variable with horizontal isopleths, the physical and chemical parameters of the headstones will be bounded by these parameters in the walls of the quarry, perhaps even perfectly matched in the walls and loose quarried blocks, and the ages will match precisely;
The information shows an important spatial-temporal dynamic in this variable southward 32[degrees]S, where isopleths of 25 and 26 mm CL show a displacement in the south-to-north axis since 2001, similar to the behaviour of the isopleth of relative abundance of 120 kg km-[linear.
However, the spatial point data is generally irregular as well as discretely geo-referenced in space and therefore requires spatial interpolation for mapping isopleths.
This graphic is created by extracting the prevailing visibility from all of the observations, mapping them to a grid, and drawing isopleths.
We estimated home-range areas using minimum convex polygons (MCP) with 95% isopleths and harmonic means, and kernel contours (KL) with 95% isopleths.
2007) with Gaussian (bivariate normal) distributions, reporting the 95% and 50% isopleths for ranges and cores, respectively.
Garnet intersecting composition isopleths (XFe, XMn, XCa) are used for geothermobarometry which are based on the electron microprobe (EPMA) analysis from the garnetcore, inner core and rim regions and plotted in divariant fields using THERMOCALC.
Mold isopleths are temperature-dependent curves of constant growth; the lowest shows at which conditions the mold takes theoretically "infinite" time to start growing (Sedlbauer 2001).