The disruption of Grassy Creek: implications concerning catastrophic events and thresholds

Ritter, Dale F.; Kochel, R. Craig; Miller, Jerry R.

doi:10.1016/s0169-555x(99)00022-7

Cited by 77 publications

(93 citation statements)

References 11 publications

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“…5a). Knickpoints in terrestrial channels can occur either when a lowering of the base level forces a river to readjust by forming a short oversteepened segment immediately upstream from the site of the base-level decline, or due to downcutting into a resistant layer (e.g., Ritter et al, 1995). The rounded knickpoint here is suggestive of a change in lithology between the shallower southern valley floor and the deeper northern floor, with a more resistant material overlying a less resistant material.…”

Section: Valleys and Channelsmentioning

confidence: 95%

“…The initiation of deposition in alluvial fans is due to the increase in width, and associated reduction in velocity, once a stream reaches the end of a confining valley where high sediment loads encounter zones of reduced stream power (Bull, 1977). Fans emplaced by debris flows are poorly sorted and landforms include marginal levees, terminal lobes and trapezoidal to U-shaped channels (Costa, 1988;Ritter et al, 1995).…”

Section: Alluvial Fan Originmentioning

confidence: 99%

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Formation of a terraced fan deposit in Coprates Catena, Mars

Weitz

Irwin

Chuang

et al. 2006

Icarus

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Section: Valleys and Channelsmentioning

confidence: 95%

Section: Alluvial Fan Originmentioning

confidence: 99%

Formation of a terraced fan deposit in Coprates Catena, Mars

Weitz

Irwin

Chuang

et al. 2006

Icarus

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“…The Karbala-Najaf Alluvial Fan has typical fan shape: such shape is mentioned by Bull [17] and Ritter et al [18], with clear symmetrical form. However, the fan has lost its symmetry especially in its distal parts, along the ends of both cliffs (Figs.…”

Section: Symmetrymentioning

confidence: 93%

“…2-4). Since the development of a fan needs a drop in the gradient of the feeder channel, either in a mountain front or when a valley merges with a wide depression [18][19][20][21]. Therefore, the fan was originated when Al-Khir Valley was merging with a wide depression, which was originally one depression, but was divided into two parts by the originated alluvial fan.…”

Section: Karbala-najaf Alluvial Fanmentioning

confidence: 99%

The Origin of Tar Al-Say’ed and Tar Al-Najaf, Karbala-Najaf Vicinity, Central Iraq

Sissakian¹,

Abdul-Jabbar²,

Al‐Ansari³

et al. 2015

JCEA

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Abstract:In central part of Iraq within the vicinity of Karbala-Najaf, two cliffs called "Tar Al-Say'ed" and "Tar Al-Najaf" form conspicuous geomorphological forms between the Mesopotamia Plain and the Western and Southern Deserts. The top surface between the two cliffs (tars) is covered by alluvial fan sediments, laid down by Al-Khir Valley when merging in a large depression due to the drop in the gradient of the valley. Consequently, the depression was divided into two parts, to the left is called Al-Razzazah Depression, whereas to the right is called Bahir Al-Najaf. This affected the course of the River Euphrates. The deposition stopped due to an uplift movement which caused the elevation of the two cliffs which are covered by alluvial fan sediments. The two cliffs had and are still suffering from retreating, due to lateral erosion by wave actions in Al-Razzazah Depression. Springs located along a straight line, sag pond, deflected drainage, shutter ridges and pressure ridges can be noticed in the area. The age of both cliffs is estimated to be upper Late Pleistocene-early Holocene.

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“…Muchas de las mismas están recogidas en trabajos que siguen la estela dejada por los clásicos manuales y enciclopedias geomorfológicas de los últimos lustros (Scheidegger, 1982(Scheidegger, , 1987Summerfield, 1991;Ritter et al, 1995;Rhoads y Thorn, 1996;Stoddart, 1997;Huggett, 2003;Evans, 2004;Goudie, 2004;Gutiérrez, 2008). La producción en el ámbito fluvial continúa siendo pionera dentro del género geomorfológico con textos de miras amplias (Chorley et al, 1984;Morisawa y Clayton, 1985;Leopold, 1994;Knighton, 1998;Dollar, 2000Dollar, , 2002Dollar, , 2004Martín Vide, 2006;Kondolf y Piégay, 2003a;Brierley y Fryirs, 2005;Schumm, 2005;Charlton, 2008), por otros orientados hacia aspectos más concretos (Richards, 1982;Zăvoianu, 1985;Petts y Foster, 1985;Thorne et al, 1987;Goudie, 1990;Amoros y Petts, 1993;Anderson et al, 1996;Rosgen, 1996;Tinkler y Wohl, 1998;Wohl, 2000;Bridge, 2003).…”

Section: Figura 2 Cronograma Histórico De La Geomorfología Y Contextuunclassified

Sobre la evolución como ciencia de la geomorfología dinámica en ambientes fluviales

Horacio¹

2017

BAGE

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RESUMENSe presenta un análisis histórico-evolutivo de la geomorfología dinámica en ambientes fluviales. El objetivo del estudio se centra en organizar los hechos temporales pasados que han ido confeccionando el cuerpo de lo que actualmente es esta ciencia. La línea del tiempo establecida se estructura en diferentes etapas, cada una de las cuales se define por unas características propias que derivan en una forma concreta de practicar y concebir la ciencia. Dicha línea del tiempo actúa también como guía y argumento en la lectura del texto.Palabras clave: geomorfología fluvial, antecedentes, historia, ciencia, evolución. ABSTRACTThis paper analyses the history and development of fluvial geomorphology in dynamic environments. The goal of the study is to organize the past events that have been making up the body of what this science is now. The established timeline is divided into different stages, each of which is defined by its own characteristics resulting in a particular way to conceive of and practice science; the timeline also serves to guide the reading of this text.

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The disruption of Grassy Creek: implications concerning catastrophic events and thresholds

Cited by 77 publications

References 11 publications

Formation of a terraced fan deposit in Coprates Catena, Mars

Formation of a terraced fan deposit in Coprates Catena, Mars

The Origin of Tar Al-Say’ed and Tar Al-Najaf, Karbala-Najaf Vicinity, Central Iraq

Sobre la evolución como ciencia de la geomorfología dinámica en ambientes fluviales

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