Morphometry

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Morphometry

 

quantitative description of the relief of the earth’s surface. The basic morphometric indexes are numerical measures of relief forms: linear, areal, and volumetric measures, absolute and relative elevations of individual geomorphological regions, the depth and density of dissection, and abstract indexes (coefficient of meandering of a river channel, coastline, and the like). Morphometric data are usually obtained by processing topographical maps, but the use of aerial photographs is also possible (employing stereophotogrammetric methods). Special morphometric maps or sets of maps are compiled on the basis of the measurements and computations made. Morphometric data are essential for planning structures, roads, steps to combat erosion, and the like.

References in periodicals archive ?
Morphometrically slighter (weighs less) than all others in complex.
51) In this analysis, the relative risk of new clinical vertebral fractures was reduced by 68% in 942 patients who had a morphometrically defined vertebral fracture at baseline and by 54% in 2,799 patients who did not have a preexisting vertebral fracture (P values not available).
Because the transformation from a small-clawed "adolescent" stage to a large-clawed morphometrically mature (MM) stage coincides with the terminal molt for males, these stages have been distinguished by using the relationship of carapace width (CW) to chela height (CH) (Comeau and Conan, 1992; Stevens et al.
Thickness of the OE lining the medial surface of the second ethmoid turbinates (2E) in T3 (Figure 1) was morphometrically evaluated as previously described for airway epithelium (Hyde et al.
At the end of 30 days, animals were sacrificed and vital as well reproductive organs were collected and analyzed morphometrically.
obliqua was diagnosed and erected as a new species by Bell (1938), and both species are morphometrically and morphologically compared by Zodrow and McCandlish (1978).
Presently two populations are known from the island, and only that in the Luquillo Mountains has been sampled and studied morphometrically to any extent (Jones et al.
For this study, experiments were limited to crabs that met the following criteria: 1) morphometrically mature males had completed a terminal molt between 1.
Breeding Cooper's Hawks among our study sites in British Columbia, North Dakota, and Wisconsin are morphometrically separable based on body mass, wing chord, and other mensural attributes (Rosenfield et al.
As assessed morphometrically, the size of grossly discernible lesions covering the intimal area of aorta were increased significantly in arsenic-treated ApoE-deficient mice compared with nontreated transgenic mice.
Blood and body weights were recorded weekly and at the end of 47 days kidneys were collected and analyzed morphometrically.