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1. geo.libretexts.org › Bookshelves › Geography3.4.7: Extratropical Ridges and Troughs (Rossby Waves)

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   May 28, 2023 · The equatorward region of any meander is called a trough (pronounced like “troff”) and is associated with low pressure or low geopotential height. The poleward portion of a meander is called a ridge, and has high pressure or height.

2. en.wikipedia.org › wiki › Trough_(geology)Trough (geology) - Wikipedia

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   In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench, a trough can be a narrow basin or a geologic rift. These features often form at the rim of tectonic plates. There are various oceanic troughs on the ocean floors.

3. Videos

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     Identifying Troughs and Ridges

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     🔵 Trough - Trough Meaning - Trough Examples - Trough Definition - GRE 3500 Vocabulary

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     Glacial trough: describe and explain

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4. www.oxfordreference.com › display › 10Trough - Oxford Reference

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   Sep 29, 2024 · Quick Reference. 1 An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails. The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ...

5. www.savemyexams.com › gcse › geographyGlacial Landforms: Troughs & Corries GCSE Geography Revision

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   Aug 9, 2024 · Learn about the formation of glacial landforms from corries to troughs, along with examiner tips and worked examples for the AQA GCSE Geography exam.

6. simple.wikipedia.org › wiki › Trough_(geology)Trough (geology) - Simple English Wikipedia, the free ...

   simple.wikipedia.org › wiki › Trough_(geology)

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   There are various oceanic troughs, troughs found under oceans; examples include the rifts along the mid-ocean ridges. Category: Landforms.

7. stemium.com › winning-science-fair-projectsWinning Science Fair Projects [Get Inspired By Past Winners!]

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   Jun 23, 2019 · finding a science fair project and getting started can be challenging. To inspire kids, we've summarized 100+ winning science fair projects.

8. People also ask

   What is a trough in geology?

   • In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench, a trough can be a narrow basin or a geologic rift. These features often form at the rim of tectonic plates. There are various oceanic troughs on the ocean floors.

   Trough (geology) - Wikipedia

   en.wikipedia.org/wiki/Trough_(geology)

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   What does trough mean?

   • The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the ‘intertropical convergence zone’.) See also long wave. 2 The lowest point of a fold surface.

   Trough - Oxford Reference

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   What is a glacial trough?

   • These are valleys formed by the glacial processes of weathering, erosion and transportation. They have steep sides and flat floors. Unlike V-shaped river valleys, glacial troughs are straight as they have truncated any interlocking spurs which existed prior to glacial advance. © 2002-2024 Tutor2u Limited. Company Reg no: 04489574.

   Glacial troughs | Topics | Geography - tutor2u

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   What does a trough look like?

   • Troughs are marked with a black dashed line, and ridges with a white zig-zag line. However, this flow is unstable, allowing small disturbances (e.g., flow over mountain ranges) to grow into large north-south meanders (Fig. 11.49b) of the jet stream. These meanders are called Rossby waves or planetary waves. Typical wavelengths are 3 - 4 Mm.

   3.4.7: Extratropical Ridges and Troughs (Rossby Waves)

   geo.libretexts.org/Bookshelves/Geography_(Physical)/BioGeoChemistry_(LibreTexts)/03:_The_Atmosphere/3.04:_General_Circulation/3.4.07:_Extratropical_Ridges_and_Troughs_(Rossby_Waves)

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   How many waves are in a trough?

   • Typical wavelengths are 3 - 4 Mm. Given the circumference of a parallel at those latitudes, one typically finds 3 to 13 waves around the globe, with a normal zonal wavenumber of 7 to 8 waves. The equatorward region of any meander is called a trough (pronounced like “troff”) and is associated with low pressure or low geopotential height.

   3.4.7: Extratropical Ridges and Troughs (Rossby Waves)

   geo.libretexts.org/Bookshelves/Geography_(Physical)/BioGeoChemistry_(LibreTexts)/03:_The_Atmosphere/3.04:_General_Circulation/3.4.07:_Extratropical_Ridges_and_Troughs_(Rossby_Waves)

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   How do meteorologists find troughs?

   • The largest vorticities are concentrated near the wave crest and trough, allowing meteorologists to use positive vorticity to help find troughs. Figure 11.a. Jet-stream path (blue) and associated vorticity (thick red).

   3.4.7: Extratropical Ridges and Troughs (Rossby Waves)

   geo.libretexts.org/Bookshelves/Geography_(Physical)/BioGeoChemistry_(LibreTexts)/03:_The_Atmosphere/3.04:_General_Circulation/3.4.07:_Extratropical_Ridges_and_Troughs_(Rossby_Waves)

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9. www.tutor2u.net › geography › topicsGlacial troughs | Topics | Geography - tutor2u

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   These are valleys formed by the glacial processes of weathering, erosion and transportation. They have steep sides and flat floors. Unlike V-shaped river valleys, glacial troughs are straight as they have truncated any interlocking spurs which existed prior to glacial advance.