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ash. Being the older of the two, Mauna Kea displays more pronounced dissection of these ravines. Rainfall and infiltration capacity are critical to valley initiation on the
Hawaiian volcanoes. Once these valleys are initiated, their streams incise to form V-shaped ravines. Eventually, they become sufficiently deep ravine systems and expose groundwater activity. The deepest of these incisions are U-shaped, theatre-headed valleys.
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of Hawaii have significant impact on the distribution of ravines across the islands, specifically Mauna Loa and Mauna Kea, the former of which is one the most active shield volcanoes on Earth. Both of these volcanoes show V-shaped ravines on their flanks, solely where they have been mantled by Pahala
107:. Ravines may or may not have active streams flowing along the downslope channel which originally formed them; moreover, often they are characterized by intermittent streams, since their geographic scale may not be sufficiently large to support a
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and that is usually worn by running water". Some societies and languages do not differentiate between a gully and ravine; in others, there is a distinction, particularly when concerning environmental management.
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has eroded so severely it forms a deep cut in the earth. A gully can be classified as a ravine after it reaches a large depth, typically in excess of 5 metres (16 ft).
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Ravine erosion contributes heavily to land loss globally and particularly threatens agricultural lands. Additionally, soil loss contributes to pollution, flooding, and
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Dagar, Jagdish
Chander. "Chapter 2: Ravines: Formation, Extent, Classification, Evolution and Measures of Prevention and Control". In
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Dagar, Jagdish
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the landscape. A ravine is the final step in gully erosion, formed when a
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Ravine Lands: Greening for
Livelihood and Environmental Security
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This article is about the valley formation. For other uses, see
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Gullies are often found in hilly or mountainous regions, where
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of waterways. The formation of ravine lands can be sped up by
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60:. Ravines are typically classified as larger in scale than
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Dagar, Jagdish
Chander; Singh, Anil Kumar, eds. (2018).
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68:. Ravines may also be called a cleuch, dell, ghout (
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Academic Press
Dictionary of Science and Technology
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144:is guided downhill by steep slopes and over time
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462:"Valley - Hawaiian Volcanoes, Erosion, Plateaus"
345:. Gulf Professional Publishing. pp. 1802–.
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339:Christopher G. Morris; Academic Press (1992).
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574:The dictionary definition of
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1922:. You can help Knowledge by
1865:. You can help Knowledge by
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376:Dagar & Singh 2018a
21:Ravine (disambiguation)
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237:Barranco de Badajoz
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1773:River cruise
1670:River sports
1523:Stream gauge
1508:Rouse number
1498:Relief ratio
1347:Flood-meadow
1278:Urban runoff
1192:Fluvial flow
1177:River valley
1147:River island
1136:
1112:Meander scar
1027:Alluvial fan
969:Progradation
844:Karst spring
788:Winterbourne
743:Chalk stream
705:River source
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1273:First flush
1220:Plunge pool
944:Downcutting
929:Debris flow
904:Aggradation
778:Stream pool
182:overgrazing
1963:Categories
1859:topography
1788:Wild river
1468:Hydrograph
1458:Hack's law
1423:Baer's law
1367:Inundation
1352:Floodplain
1292:stormwater
1250:Whitewater
1122:Oxbow lake
959:Knickpoint
934:Deposition
827:Hot spring
768:Streamflow
758:Stream bed
675:Confluence
520:2018935227
466:Britannica
424:Dagar 2018
412:Dagar 2018
400:Dagar 2018
388:Dagar 2018
293:References
257:, Pakistan
115:Definition
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1758:Limnology
1707:Triathlon
1677:Canyoning
1646:Revetment
1576:Check dam
1488:Main stem
1245:Waterfall
1132:Point bar
1117:Mouth bar
1057:Billabong
1004:Water gap
999:Wash load
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710:Tributary
358:1 October
298:Citations
275:, Iceland
273:Stuðlagil
269:, Iceland
227:, Ukraine
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1072:Cut bank
1037:Avulsion
914:Bed load
894:Abrasion
324:2 August
315:"Ravine"
287:, Canada
225:Babi Yar
192:Examples
186:badlands
105:gradient
47:landform
1989:Oronyms
1984:Ravines
1916:erosion
1738:Aquifer
1731:Related
1687:Rafting
1215:Meander
1210:Log jam
1172:Thalweg
1077:Estuary
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886:erosion
798:Springs
753:Current
720:Streams
660:Channel
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281:, Japan
251:, Italy
245:, Spain
239:, Spain
233:, Gabon
101:fluvial
88:), and
66:valleys
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58:erosion
32:Pieniny
1533:WAFLEX
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1288:Floods
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1167:Strath
1137:Ravine
1062:Canyon
817:Geyser
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728:Arroyo
631:Rivers
615:Rivers
577:ravine
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861:Ponor
636:lists
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