2013
DOI: 10.1016/j.geomorph.2012.08.023
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Knickpoint retreat and transient bedrock channel morphology triggered by base-level fall in small bedrock river catchments: The case of the Isle of Jura, Scotland

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Cited by 84 publications
(56 citation statements)
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“…The retreat of transient knickpoints has been investigated by theoretical analysis (Whipple and Tucker, 1999), simulation in flume experiments (Holland and Pickup, 1976;Frankel et al, 2007), and analysis of field-based data in many studies (e.g., Bishop et al, 2005;Crosby and Whipple, 2006;Castillo et al, 2013). Some scholars demonstrated the impacts of rock strength, fault throw rate, channel narrowing, transported sediments, and the ratio of precipitation to infiltration on the retreat rate of knickpoints (e.g., Stock and Montgomery, 1999;Whittaker and Boulton, 2012); others presented a close relation of the upstream drainage area, a proxy for water discharge, with the rate of knickpoint migration (e.g., Bishop et al, 2005;Crosby and Whipple, 2006;Loget et al, 2006;Berlin and Anderson, 2007;Castillo et al, 2013).…”
Section: Introductionmentioning
confidence: 99%
“…The retreat of transient knickpoints has been investigated by theoretical analysis (Whipple and Tucker, 1999), simulation in flume experiments (Holland and Pickup, 1976;Frankel et al, 2007), and analysis of field-based data in many studies (e.g., Bishop et al, 2005;Crosby and Whipple, 2006;Castillo et al, 2013). Some scholars demonstrated the impacts of rock strength, fault throw rate, channel narrowing, transported sediments, and the ratio of precipitation to infiltration on the retreat rate of knickpoints (e.g., Stock and Montgomery, 1999;Whittaker and Boulton, 2012); others presented a close relation of the upstream drainage area, a proxy for water discharge, with the rate of knickpoint migration (e.g., Bishop et al, 2005;Crosby and Whipple, 2006;Loget et al, 2006;Berlin and Anderson, 2007;Castillo et al, 2013).…”
Section: Introductionmentioning
confidence: 99%
“…La distancia del retroceso de los knickpoints guarda una moderada correlación con el área de drenaje (Figura 9A), lo que indica que la propagación de estas formas está controlada por la descarga fluvial, de tal forma que existe una relación proporcional. La relación entre el retroceso del knickpoint y el área de drenaje se ha confirmado en diversos sitios donde los knickpoints son propagados a consecuencia de una caída en el nivel de base (e.g., Bishop et al, 2005;Loget y van den Driessche, 2009;Castillo et al, 2013).…”
Section: Resultados Y Discusiónunclassified
“…Cuando existen cambios debidos a un levantamiento tectónico, forzamiento climático o a la litología, la relación entre las pendientes y área de drenaje cambia, lo cual puede incrementar el valor de ks o producirse una ruptura en el escalamiento de la Ecuación 1, lo que corresponde normalmente con la presencia de knickpoints (e.g., Snyder et al, 2003;Schoenbohm et al, 2004;Whipple, 2004;Bishop et al, 2005;Wobus et al, 2006;Castillo et al, 2013;Trauerstein et al, 2013). También se recomienda tener cautela en el uso de la Ecuación 1 ya que ks guarda una correlación con θ, por lo tanto, es recomendable normalizar el índice de verticalidad para romper la covarianza y facilitar la comparación entre los distintos ríos de un sistema montañoso determinado (Sklar y Dietrich, 1998;Kirby et al, 2003;Wobus et al, 2006).…”
Section: Introductionunclassified
“…of Natural Environmental Studies, The University of Tokyo, Kashiwa, Chiba, Japan cur in bedrock rivers [5][6][7] and are an indicator of channel adjustments to local or regional perturbations [8][9][10]. The steepening of a river reach occurs as a result of a number of factors and processes including resistant lithology and differential erosion [2,11,12], transient response to base level change [13,14], change in shear stress leading to gully head propagation [15], and changes in sediment loads from tributaries [16]. Knickzones that develop along the stream thalwegs or bedrocks influence the shape and trend of the longitudinal channel profiles.…”
Section: Introductionmentioning
confidence: 99%