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saltation
saltation (sælˈteɪʃən) [ad. L. saltātiōn-em, n. of action f. saltāre to saltate.] 1. a. Leaping, bounding, or jumping; a leap.1646 Sir T. Browne Pseud. Ep. v. iii. 236 Locusts..being ordained for saltation, their hinder legs doe far exceed the other. 1710 T. Fuller Pharm. Extemp. 129 Those odd Epile...
Oxford English Dictionary
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Saltation (biology)
Evidence exists for various forms of saltation in a variety of organisms. In the early 20th century a mechanism of saltation was proposed as large mutations.
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Saltation (geology)
Avalanches
Saltation layers can also form in avalanches. External links
Dune sand saltation video, Kansas State University
Close up of dune sand saltation, Kansas State University
Geological processes
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saltate
saltate, v. (ˈsælteɪt) [f. L. saltāt-, ppl. stem of saltāre to dance, frequent. of salīre to leap.] 1. intr. To leap; to jump; to skip. Hence ˈsaltating vbl. n. rare.1623 Cockeram 11, To Dance. Saltate, Tripudiate. 1846 in Worcester (citing Month. Rev.). 1865 Cornh. Mag. Mar. 299, I must here confes...
Oxford English Dictionary
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Saltus
saltūs) meaning "leap," as in:
Natura non facit saltus ("nature does not make jumps"), a principle of natural philosophy; hence in scientific usage:
Saltation (biology)
Saltation (geology)
Saltatory conduction
Saltus lunae, a "leap of the moon" in Christian calendar computation; see computus
See also Sault,
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saltationist
saltationist, a. and n. Biol. (sælˈteɪʃənɪst) [f. saltation + -ist.] A. adj. Of or pertaining to saltationism. B. n. One who supports or advocates saltationism.1954 R. A. Fisher in J. S. Huxley et al. Evolution as Process 93 Darwin's criticism of the saltationist theory of M. Mivart. 1978 Sci. Amer....
Oxford English Dictionary
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Swamping argument
He then introduced the 'swamping argument' to deny the possibility that an occasional monstrous individual, a saltation, could supply an escape from this Darwin needed a solution to both the swamping argument for non-saltation’s and the earths age.
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Michelle Lampl
Lampl is internationally recognized for her work identifying normal human growth to be a pattern of saltation and stasis. Saltation and stasis: a model of human growth. Science, 258(5083), 801–803.
Lampl, M., & Johnston, F. E. (1996).
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跃移
参见
风成地貌
风成作用
拜格诺公式
《风沙和荒漠沙丘物理学》
参考资料
外部连结
Dune sand saltation video, Kansas State University
Close up of dune sand saltation, Kansas State University Saltation - Geology - Great Sand Dunes National Park and Preserve
The Bibliography of Aeolian Research
S
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Sand sheet
Sand sheets are flat, gently undulating plots of sand surfaced by grains that may be too large for saltation.
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قفز رملي
القفز الرملي (Saltation) هو انتقال وثبي لحبات الرمل (بقطر 0.06 إلى 1 ميلليمتر) أو جسيمات الترسبات, في قعر الأنهار أو في مناطق تواجد الكثبان الرملية على
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Windstreak
All forms of sediment transport (saltation, traction, and suspension) and sediment sizes (clay to gravel) are considered to be involved during windstreak low albedo streak with high albedo surface) characterized by the erosion of bright material; and (3) dark streaks where dark material is emplaced from saltation
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Oophaga solanensis
They move around by saltation.
Conservation
By the IUCN, O. solanensis is considered vulnerable as their population is decreasing.
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Traction (geology)
By contrast, saltation, a related sediment transport process, moves grains across the bottom by bouncing or hopping. The actual current carries the sediment load in traction and saltation flows, whereas downslope movement under the force of gravity carries the sediment
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Grain flow
By contrast, pure grain flows are rare in subaqueous settings, where the grains in a flow are generally held in suspension dominantly by traction, saltation
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