Characterizing the primary material sources and dominant erosional processes for post-fire debris-flow initiation in a headwater basin using multi-temporal terrestrial laser scanning data

Staley, Dennis M.; Wasklewicz, Thad; Kean, Jason W.

doi:10.1016/j.geomorph.2014.02.015

Cited by 91 publications

(154 citation statements)

References 67 publications

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“…Indeed, the suspended sediment flux from the Arroyo Seco subbasin was found by Warrick et al (2012) to be highly controlled by the coincidence of wildfire and large storms on the basis of two instances of nearly complete burning of the watershed's oak and chaparral shrublands. The role of fire in maintaining chaparral vegetation communities and dominating sediment production in the semi-arid foothills and low mountains typical of coastal central and southern California has been extensively reported (Hanes, 1971;Rice, 1982;Minnich, 1983;Florsheim et al, 1991;Mensing;Keeley and Fotheringham, 2003;Mortiz, 2003;Wohlgemuth and Hubbert, 2008;Zeedler, 2009, Hubbert et al, 2012;Staley et al, 2014). In contrast, the undammed Salinas River watershed is an order of magnitude larger than the Arroyo Seco, with about half the average relief, and extensive agricultural development consisting of irrigation agriculture in lowlands and extensive grasslands on lower foothill slopes.…”

Section: Discussionmentioning

confidence: 99%

“…Increased surface runoff further exacerbates erosion from the destabilized hillslope. Indeed, the timing of high-intensity precipitation plays a large role in post-fire sediment flux augmentation (Inbar et al, 1998;Warrick et al, 2012;Staley et al;. Large storms produce precipitation intensities and volumes sufficient to traverse runoff regimes, from sheet flow, to rill and gully erosion, and mass wasting, which can very effectively erode wildfire destabilized hillslopes (Cannon, 2001;Moody et al, 2008).…”

Section: Internal and External Controlsmentioning

confidence: 99%

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Conversion to drip irrigated agriculture may offset historic anthropogenic and wildfire contributions to sediment production

Gray

Pasternack

Watson

et al. 2016

Science of The Total Environment

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This study is an investigation into the roles of wildfire and changing agricultural practices in controlling the inter-decadal scale trends of suspended sediment production from semi-arid mountainous rivers. In the test case, a decreasing trend in suspended sediment concentrations was found in the lower Salinas River, California between 1967 and 2011. Event to decadal scale patterns in sediment production in the Salinas River have been found to be largely controlled by antecedent hydrologic conditions. Decreasing suspended sediment concentrations over the last 15 years of the record departed from those expected from climatic/hydrologic forcing. Sediment production from the mountainous headwaters of the central California Coast Ranges is known to be dominated by the interaction of wildfire and large rainfall/runoff events, including the Arroyo Seco, a ~700 km 2 subbasin of the Salinas River. However, the decreasing trend in Salinas River suspended sediment concentrations run contrary to increases in the watershed's effective burn area over time. The sediment source area of the Salinas River is an order of magnitude larger than that of the Arroyo Seco, and includes a more complicated mosaic of land cover and land use. The departure from hydrologic forcings on suspended sediment concentration patterns was found to coincide with a rapid conversion of irrigation practices from sprinkler and furrow to subsurface drip irrigation. Changes in agricultural operations appear to have decreased sediment supply to the Salinas River over the late 20 th to early 21 st centuries, obscuring the influence of wildfire on suspended sediment production.

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Section: Discussionmentioning

confidence: 99%

Section: Internal and External Controlsmentioning

confidence: 99%

Conversion to drip irrigated agriculture may offset historic anthropogenic and wildfire contributions to sediment production

Gray

Pasternack

Watson

et al. 2016

Science of The Total Environment

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“…CANNON et al, 1998, 2001a, 2001b, São Paulo, v.18, n.1, (Jan-Mar) p. 81-106, 2017, 2011GARTNER et al, 2008;SANTI et al, 2008;PARISE e CANNON, 2012;STALEY et al, 2013STALEY et al, , 2014DE GRAFF, 2014;NYMAN et al, 2015). Por este motivo, e tendo em conta os incêndios fl orestais que defl agraram na área de estudo dois meses antes do desencadeamento dos fl uxos de detritos, considerou-se importante a integração da variável respeitante às áreas ardidas no verão de 2005.…”

Section: Modelação Das áReas De Rutura De Fl Uxos De Detritos Seleçãounclassified

Avaliação Da Suscetibilidade À Rutura E Propagação De Fluxos De Detritos Na Bacia Hidrográfica Do Rio Zêzere (Serra Da Estrela, Portugal)

Melo

Zêzere

2017

Rev. Bras. Geomorfol.

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Resumo:Na avaliação da suscetibilidade a movimentos de vertente, a cartografi a produzida deverá integrar não só as áreas de iniciação do movimento, como também aquelas potencialmente atingidas pelo material mobilizado. Este objetivo é alcançado através da separação da análise da suscetibilidade em duas componentes distintas: (i) a primeira componente, que é também a mais explorada na literatura, corresponde à modelação das áreas de iniciação do movimento; (ii) a segunda componente refere-se à modelação das respetivas áreas de propagação, utilizando, como input, os mapas com a delimitação das potenciais áreas de rutura. Neste trabalho é feita a avaliação da suscetibilidade à ocorrência de fl uxos de detritos na bacia hidrográfi ca do rio Zêzere (Serra da Estrela, Portugal). Para a identifi cação das potenciais áreas de rutura recorreu-se a um método estatístico bivariado (Valor Informativo) e a simulação das áreas afetadas pela passagem e deposição do material transportado foi sustentada por um algoritmo hidrológico simples (D-infi nity downslope infl uence). A área abaixo da curva (AUC), determinada no âmbito da validação dos modelos de Valor Informativo, apresenta valores compreendidos entre 0,94 e 0,96, o que indica uma excelente capacidade preditiva. As variáveis preditivas com maior relevância na ocorrência de áreas de rutura de fl uxos de detritos correspondem às áreas ardidas em 2005, declives superiores a 30°, espessura do solo inferior a 75 cm e perfi l transversal côncavo. Na validação do modelo de propagação do material mobilizado, a partir das 36 áreas de rutura que constituem o inventário de movimentos, obteve-se uma taxa de verdadeiros positivos de 80,5%, o que refl ete um bom desempenho do modelo.

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“…Generally, lidar information complements rather than replaces field observations, with lidar observations leading to new hypotheses and process cognition (Roering et al, 2013). Broadly, lidar technology has been useful in studying geomorphic response to extreme events such as fire and storms (e.g., Pelletier and Orem, 2014;Sankey et al, 2013;Perignon et al, 2013;Staley et al, 2014), human activities (e.g., James et al, 2009), and past climatic and tectonic forcings (e.g., Roering, 2008;Belmont et al, 2011;West et al, 2014). Meter-and sub-meter-scale time-varying processes, often derived from TLS, have been quantified in the response of point bar and bank morphodynamics (Lotsari et al, 2014) and in the formation of micro-topography due to feedbacks with biota (e.g., Roering et al, 2010;Harman et al, 2014).…”

Section: Advances In Geomorphology Using Lidarmentioning

confidence: 99%

Laser vision: lidar as a transformative tool to advance critical zone science

Harpold

Marshall

Lyon

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract. Observation and quantification of the Earth's surface is undergoing a revolutionary change due to the increased spatial resolution and extent afforded by light detection and ranging (lidar) technology. As a consequence, lidar-derived information has led to fundamental discoveries within the individual disciplines of geomorphology, hydrology, and ecology. These disciplines form the cornerstones of critical zone (CZ) science, where researchers study how interactions among the geosphere, hydrosphere, and biosphere shape and maintain the "zone of life", which extends from the top of unweathered bedrock to the top of the vegetation canopy. Fundamental to CZ science is the development of transdisciplinary theories and tools that transcend disciplines and inform other's work, capture new levels of complexity, and create new intellectual outcomes and spaces. Researchers are just beginning to use lidar data sets to answer synergistic, transdisciplinary questions in CZ science, such as how CZ processes co-evolve over long timescales and interact over shorter timescales to create thresholds, shifts in states and fluxes of water, energy, and carbon. The objective of this review is to elucidate the transformative potential of lidar for CZ science to simultaneously allow for quantification of topographic, vegetative, and hydrological processes. A review of 147 peer-reviewed lidar studies highlights a lack of lidar applications for CZ studies as 38 % of the studies were focused in geomorphology, 18 % in hydrology, 32 % in ecology, and the remaining 12 % had an interdisciplinary focus. A handful of exemplar transdisciplinary studies demon- Published by Copernicus Publications on behalf of the European Geosciences Union. 2882 A. A. Harpold et al.: Laser vision: lidar as a transformative toolstrate lidar data sets that are well-integrated with other observations can lead to fundamental advances in CZ science, such as identification of feedbacks between hydrological and ecological processes over hillslope scales and the synergistic co-evolution of landscape-scale CZ structure due to interactions amongst carbon, energy, and water cycles. We propose that using lidar to its full potential will require numerous advances, including new and more powerful open-source processing tools, exploiting new lidar acquisition technologies, and improved integration with physically based models and complementary in situ and remote-sensing observations. We provide a 5-year vision that advocates for the expanded use of lidar data sets and highlights subsequent potential to advance the state of CZ science.

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Characterizing the primary material sources and dominant erosional processes for post-fire debris-flow initiation in a headwater basin using multi-temporal terrestrial laser scanning data

Cited by 91 publications

References 67 publications

Conversion to drip irrigated agriculture may offset historic anthropogenic and wildfire contributions to sediment production

Conversion to drip irrigated agriculture may offset historic anthropogenic and wildfire contributions to sediment production

Avaliação Da Suscetibilidade À Rutura E Propagação De Fluxos De Detritos Na Bacia Hidrográfica Do Rio Zêzere (Serra Da Estrela, Portugal)

Laser vision: lidar as a transformative tool to advance critical zone science

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