Spatial and vertical distributions of elements in sediments of the Colorado River delta and Upper Gulf of California

Shumilin, Evgueni; Carriquiry, José D.; Camacho-Ibar, Víctor F.; Sapozhnikov, Dmitry; Kalmykov, Stepan N.; Sánchez, Alberto; Aguíñiga‐García, Sergio; Sapozhnikov, Yuri

doi:10.1016/s0304-4203(02)00059-2

Cited by 56 publications

(26 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1). These publications are based on original field studies in six continents (Africa, Asia, Australia, Europe, North America, and South America) including 20 countries, e.g., France [36], Spain [42,43], Greece [37,38], Turkey [24], Albania [35], Italy [39,41], USA [7,[47][48][49], French Guiana [53], Mexico [46], China [12,[26][27][28], India [30,31], Korea [29], Azerbaijan [23], Iran [23], Kazakhstan [23], Russia [23], Fiji [34], Australia [33], and Africa [20]. Table 1 Table 1).…”

Section: Metal Concentrations In Coastal Sedimentsmentioning

confidence: 99%

Metal Pollution in Coastal Sediments

Zhang

et al. 2015

Curr Pollution Rep

View full text Add to dashboard Cite

Coastal sediment is a vital habitat for aquatic and marine life in coastal ecosystem. However, urbanization and economic development in coastal areas have resulted in environmental problems globally. Due to coastal development such as new industrial facilities and commercial port expansion, anthropogenic metals are introduced to the adjacent areas. Therefore, metal pollution in coastal areas is one of the focused environmental concerns. Sediment quality in coastal zone reflects the long-term environmental status because it keeps a record of the development in the area. In this review paper, sediment metal concentrations in 52 selected sites worldwide are summarized for evaluation of the coastal environmental quality. The results from this study can be applied to science-based policy formulation and ecological restoration/rehabilitation practices in an integrated coastal zone environmental management.Keywords Coastal sediment . Metal . Enrichment factor . Hazardous quotient . Risk assessment OverviewMetals with different speciations and oxidation states are naturally present in the earth crust [1]. Depending on the rock type, geophysical condition, and geographical location around the world, metal concentrations in sediments, soils, and water present as naturally weathered products from the earth crust can be different from place to place [2, 3]. Trace amount of metals is essential micronutrients for the growth and metabolism of many organisms [4]. However, metals in excessive amount can be toxic to organism and cause ecological toxicity [4]. Anthropogenic metal input associated with the urbanization and industrialization in the twentieth century has increased dramatically in the coastal areas and is drawing increasing attention around the world because about 80 % of the pollutants from human activities are introduced into coastal environment [1,5]. Therefore, metal pollution in the coastal sediments has become a major environmental problem because it threatens the economic and ecological value of the coastal area.Coastal environment is a complex system involving physical, chemical, and biological processes that play important roles in metal biogeochemical cycle. However, anthropogenic input has caused metal pollution in the coastal area. The sources include mining, metal product fabrication, solid waste disposal, fossil fuel combustion, and municipal/industrial waste effluent [1, 6]. Industries, such as foundry, paper processing, laundry, tannery, and dye works, can emit toxic metals and discharge wastewater to the adjacent estuaries and coastal areas [7,8]. Acid rain can leach metals and increase the mobility of toxic metals from pollutant sources to the environment [9]. Once enter coastal environment, the toxic metals will mainly accumulate in the sediments because of particle Curr Pollution Rep (2015) 1:203-219 DOI 10.1007 scavenging and settling. Therefore, high concentrations of toxic metals are often found in sediments in many industrialized urban coastal areas as a consequence of industrializat...

show abstract

Section: Metal Concentrations In Coastal Sedimentsmentioning

confidence: 99%

Metal Pollution in Coastal Sediments

Zhang

et al. 2015

Curr Pollution Rep

View full text Add to dashboard Cite

show abstract

“…The Colorado River (North America) is one of the most transformed rivers in the world. Intensive economic use of the Colorado River water was developed during the twentieth century [1,2]. Before any dam construction, during the period between 1905 and 1936, the average daily discharge into the Gulf of California was 600 m 3 /s [1].…”

Section: Introductionmentioning

confidence: 99%

“…Before any dam construction, during the period between 1905 and 1936, the average daily discharge into the Gulf of California was 600 m 3 /s [1]. Completion of large dams, such as the Hoover Dam in 1935 and Glenn Canyon in 1952, greatly reduced discharge [1,2]. Since 2000, more than 60% of the time, no flow is registered at the Southerly International Boundary (SIB) [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Applying SPOT Images to Study the Colorado River Effects on the Upper Gulf of California

Aguilar-Maldonado

Santamaría-del-Ángel

Sebastiá-Frasquet

2017

The 2nd International Electronic Conference on Water Sciences

View full text Add to dashboard Cite

Sediment discharges from rivers play a key role in downstream ecosystems, both for ecosystem morphology (e.g., deltas) and productivity. However, the construction of dams and river regulation dramatically alter sediment transport. Currently, the Colorado River delta is one of the most transformed deltas in the world and, most years, no flow reaches the Gulf of California. In this study, we used satellite images for the observation and measurement of coastal water turbidity in the Upper Gulf of California (UGC) and Colorado River Delta (CRD). Specifically, we used the Earth-observing Satellites (in French Satellites Pour l'Observation de la Terre, SPOT) high spatial resolution satellite. We processed images of the wavelength 2 (S2 ) from the period between 2008 and 2013 in the Biosphere Reserve area. Results showed that suspended material and high turbidity predominate in the CRD and intertidal zones of the UGC. High and very high turbidity values were due to two opposite coastal transport components along the Sonora and Baja California coasts. The high spatial resolution of the SPOT sensor effectively allowed the sediment transport gradients and the accumulation zones to be located in a highly variable area. This information provided by SPOT images can be very valuable for management decisions such as the amount of ecological flow that needs to be released. This area is the habitat of endangered species, such as totoaba (Totoaba macdonaldi) and vaquita (Phocoena sinus), that are seriously affected by the loss of estuarine conditions. High resolution satellite images can help to quantify the true extent of corrective measures.

show abstract

“…El GC es una región muy compleja que presenta una alta productividad (Alvarez-Borrego et al, 1978;Alvarez-Borrego y Gaxiola-Castro, 1988). Particularmente en el Alto y Norte del Golfo de California se han registrado los efectos derivados de la descarga del Río Colorado (Carriquiry y Sánchez, 1999;Lavín y Sánchez, 1999) que han llevado a una nueva dinámica y relocalización del material sedimentario, de forma que los sedimentos son transportados y dispersados a lo largo del margen occidental (Carriquiry y Sánchez, 1999;Shumilin et al, 2002) y finalmente depositados en la región profunda del Norte del Golfo (Carriquiry et al, 2001;Daesslé et al, 2004). Alvarez y Jones (2004) sugieren que las corrientes de gravedad, generadas en el Alto Golfo, son el mecanismo dominante que ocasiona la dispersión de sedimentos hacia las partes profundas del Norte del Golfo de California, al menos para las condiciones de verano.…”

Section: Introductionunclassified

Batimetría y características hidrográficas (Mayo, 2007) en las Cuencas de Consag y Wagner, Norte del Golfo de California, México

Vázquez-Figueroa¹,

Canet²,

Prol‐Ledesma³

et al. 2009

BSGM

Self Cite

View full text Add to dashboard Cite

ResumenLa parte Norte del Golfo de California presenta una compleja actividad tectónica, además de ser una región sometida a diversos factores oceanográficos y climáticos que modifican constantemente la circulación y composición del agua y la dinámica de los sedimentos. Con el objeto de distinguir los principales rasgos hidrográficos para la columna de agua, así como su batimetría detallada, se analizaron datos de CTD y ecosonda tomados durante mayo de 2007 en las cuencas de Wagner y Consag. La batimetría de las cuencas sugiere una subsidencia ligada a extensión pull-apart. Los taludes que definen el borde oriental de las cuencas se corresponden con la falla lístrica de Wagner, con orientación NNW-SSE. Los resultados indicaron que la columna de agua se encontraba estratificada con una termoclina presente en los primeros 50 metros de profundidad y sólo el 32% de estaciones presentó una capa de mezcla. La temperatura de la columna varió entre 23° en la superficie hasta 15°C en el fondo de las cuencas. La salinidad osciló entre 35.2 en el fondo y 35.8 en la superficie, con ausencia de haloclina. Se identificó un domo de menor salinidad (35.32) que parece desplazarse de sur a norte, de 50 a 150 m de profundidad. El diagrama T-S muestra la presencia de Agua del Golfo de California.Palabras clave: Masas de agua, termoclina, batimetría, cuenca de pull-apart, Falla de Wagner. Abstract The northern Gulf of California encompasses a complex tectonic setting characterized by several oceanographic and climatic factors that continuously change water circulation and composition as well as sediment dynamics. CTD and echosounder data, collected during

show abstract

Spatial and vertical distributions of elements in sediments of the Colorado River delta and Upper Gulf of California

Cited by 56 publications

References 32 publications

Metal Pollution in Coastal Sediments

Metal Pollution in Coastal Sediments

Applying SPOT Images to Study the Colorado River Effects on the Upper Gulf of California

Batimetría y características hidrográficas (Mayo, 2007) en las Cuencas de Consag y Wagner, Norte del Golfo de California, México

Contact Info

Product

Resources

About