Historical description of the morphology and hydraulic behavior of a bifurcation in the lowlands of the Grijalva River Basin, Mexico

Mendoza, Alberto Bujardón; Soto-Cortés, Gabriel; Priego-Hernandez, Gaston; Rivera-Trejo, Fabián

doi:10.1016/j.catena.2019.01.033

Cited by 14 publications

(11 citation statements)

References 14 publications

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“…The Usumacinta River originates in the Cuchumatanes mountain range (upper basin), Guatemala, and runs through the Mexican States of Chiapas and Tabasco (middle and lower basins). The adjacent Grijalva River, which is artificially connected to the Usumacinta River before the river mouth at the southern Gulf of Mexico [29], increases the total water discharge through the Usumacinta River's mouth. The maximum order (Strahler method) of both rivers at their confluence is 7 [30].…”

Section: Study Sitementioning

confidence: 99%

Particulate Organic Carbon in the Tropical Usumacinta River, Southeast Mexico: Concentration, Flux, and Sources

Cuevas-Lara

Alcocer

Cortés‐Guzmán

et al. 2021

Water

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Particulate organic carbon (POC) derived from inland water plays an important role in the global carbon (C) cycle; however, the POC dynamic in tropical rivers is poorly known. We assessed the POC concentration, flux, and sources in the Usumacinta, the largest tropical river in North America, to determine the controls on POC export to the Gulf of Mexico. We examined the Mexican middle and lower Usumacinta Basin during the 2017 dry (DS) and rainy (RS) seasons. The POC concentration ranged from 0.48 to 4.7 mg L−1 and was higher in the RS, though only in the middle basin, while remaining similar in both seasons in the lower basin. The POC was predominantly allochthonous (54.7 to 99.6%). However, autochthonous POC (phytoplankton) increased in the DS (from 5.1 to 17.7%) in both basins. The POC mass inflow–outflow balance suggested that floodplains supply (C source) autochthonous POC during the DS while retaining (C sink) allochthonous POC in the RS. Ranging between 109.1 (DS) and 926.1 t POC d−1 (RS), the Usumacinta River POC export to the Gulf of Mexico was similar to that of other tropical rivers with a comparable water discharge. The extensive floodplains and the “Pantanos de Centla” wetlands in the lowlands largely influenced the POC dynamics and export to the southern Gulf of Mexico.

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Section: Study Sitementioning

confidence: 99%

Particulate Organic Carbon in the Tropical Usumacinta River, Southeast Mexico: Concentration, Flux, and Sources

Cuevas-Lara

Alcocer

Cortés‐Guzmán

et al. 2021

Water

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“…From this relationship, it can be deduced that a reduction in the slope decreases the sediment load capacity. An analysis presented in Mendoza et al (2019) from field measurements of total suspended load sampled before the commissioning of the dams, indicates that the Mezcalapa River transport capacity was one order of magnitude larger than the Carrizal River. This is related to the larger energy gradient observed in the Mezcalapa River (Figure 3).…”

Section: Study Areamentioning

confidence: 99%

Alteration of the flow distribution at a river bifurcation caused by a system of upstream dams: Case of the Grijalva River basin, Mexico

Mendoza

Berezowsky

Caballero

et al. 2021

Earth Surf Processes Landf

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Multiple factors control the flow distribution in a river bifurcation. However, one factor that requires further analysis is the effect of upstream reservoirs. Such is the case of the bifurcation of the Mezcalapa River into the Samaria and Carrizal Rivers located in the lowlands of the Grijalva River basin, Mexico. Four dams were commissioned in the upper basin, the first in 1967 and the last in 1987. Since the late 1960s the distribution of the flow at the bifurcation has varied considerably. The flow captured by the Carrizal River between the late 1960s and mid 1980s gradually decreased from 40% to 10%, and later, between the mid 1980s and early 2000s, it increased up to 75%. During the same period, the Samaria River had a reversed pattern. Here, using a two-dimensional hydro-morphodynamical model, the impact of an upstream reservoir (that causes homogenization of the flow hydrograph and sediment retention) on bed morphology and flow distribution in a river bifurcation is analyzed. The results indicate that the sediment retention is the factor of largest impact on the flow distribution. The upstream channel incises, and the process propagates to the diffluent with the larger energy gradient developing positive feedback were the erosion increases the hydraulic capacity to capture more flow, resulting in more erosion. The flow homogenization has also an impact. The suppression of peak flows reduces the sediment load capacity in the diffluent with lower energy gradient, generating sedimentation at its entrance and diminishing its hydraulic capacity.

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“…En igual sentido, Salimi, Nohegar, Malekian, Hoseini y Holisaz (2017) consideran este parámetro clave para predecir la respuesta de una cuenca hidrográfica a un evento de lluvia específico, jugando un papel fundamental en la simulación lluvia-escorrentía. Por tanto, un mayor conocimiento del comportamiento de este parámetro es fundamental para la planificación territorial en zonas con Desde una perspectiva geológica, de acuerdo con Mendoza et al (2019), la subcuenca del río Mezcalapa se caracteriza por ser una cuenca en formación, donde la dinámica morfológica está condicionada por procesos acelerados de sedimentación y cambios morfológicos influenciados por intervenciones antrópicas, como presas y otras obras de control. En adición a ello, el río Mezcalapa recibe las descargas de la cuenca alta del río Grijalva (figura 8), la zona se afectó por la problemática de las inundaciones recurrentes que históricamente han impactado al sureste de México (Arreguín-Cortés et al, 2014).…”

Section: Tabla 3 Resumen De La Clasificación De Las Características Munclassified

“…Esta zona se encuentra afectada por un proceso acelerado de sedimentación y cambios morfológicos asociado a intervenciones antrópicas, como el sistema de presas del Grijalva y otras obras de control en la zona, siendo esto un aspecto clave en la dinámica morfológica del río Mezcalapa. Por tanto, se considera que el actual río Mezcalapa es el resultado de continuos aluviones que formaron la bifurcación Mezcalapa -Samaria -Carrizal (Mendoza, Soto-Cortés, Priego-Hernández, & Rivera-Trejo, 2019). Desde esa perspectiva, el objetivo de esta investigación es caracterizar la geomorfología de la subcuenca río Mezcalapa a través de sus parámetros morfométricos con la finalidad de analizar y comprender el comportamiento morfodinámico e hidrológico de esta subcuenca.…”

Section: Introductionunclassified

Caracterización geomorfológica de la subcuenca río Mezcalapa, región hidrológica Grijalva-Usumacinta (RH-30) en sureste de México

Álvarez-Soberano

Pérez

2020

IyCUAA

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Este trabajo tiene como objetivo principal caracterizar la geomorfología de la subcuenca río Mezcalapa en la región hidrológica Grijalva-Usumacinta en el sureste de México usando sistemas de información geográfica (SIG) y una serie de parámetros morfométricos con la finalidad de analizar y comprender el comportamiento morfodinámico e hidrológico de esta subcuenca. Si bien los resultados obtenidos explican el comportamiento hidromorfométrico en la subcuenca, las características hidrológicas y sedimentológicas del río Mezcalapa están definidas por la política de operación de la presa Peñitas (nombre oficial: presa Ángel Albino Corzo). Con esta investigación se busca contribuir y fortalecer el conocimientolocal, como también favorecer la toma de decisiones en los temas de ordenamiento territorial, protección civil, infraestructura y políticas públicas.

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Historical description of the morphology and hydraulic behavior of a bifurcation in the lowlands of the Grijalva River Basin, Mexico

Cited by 14 publications

References 14 publications

Particulate Organic Carbon in the Tropical Usumacinta River, Southeast Mexico: Concentration, Flux, and Sources

Particulate Organic Carbon in the Tropical Usumacinta River, Southeast Mexico: Concentration, Flux, and Sources

Alteration of the flow distribution at a river bifurcation caused by a system of upstream dams: Case of the Grijalva River basin, Mexico

Caracterización geomorfológica de la subcuenca río Mezcalapa, región hidrológica Grijalva-Usumacinta (RH-30) en sureste de México

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