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Suspended sediment dynamics in the Amazon River of Peru

机译：秘鲁亚马逊河悬浮泥沙动力学

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摘要

The erosion and transport of sediments allow us to understand many activities of significance, such as crust evolution, climate change, uplift rates, continental processes, the biogeochemical cycling of pollutants and nutrients. The Amazon basin of Peru has contrasting physiographic and climatic characteristics between the Andean piedmont and the plains and between the north and south of the basin which is why there are 8 gauging stations located along the principal rivers of the Andean piedmont (Maranon, Huallaga, Ucayali) and the plain (Marafion, Tigre, Napo, Ucayali and Amazon rivers). Since 2003, the ORE-Hybam (IRD-SENAMHI-UNALM) observatory has performed out regular measurements at strategic points of the Amazon basin to understand and model the systems, behavior and long-term dynamics. On the Andean piedmont, the suspended yields are governed by a simple model with a relationship between the river discharge and the sediment concentration. In the plain, the dilution effect of the concentrations can create hysteresis in this relationship on a monthly basis. The Amazon basin of Peru has a sediment yield of 541 *10~6 t year~(-1) 70% comes from the southern basin.
机译：沉积物的侵蚀和运输使我们能够了解许多重要的活动，例如地壳演化，气候变化，上升速率，大陆过程，污染物和养分的生物地球化学循环。秘鲁的亚马逊河流域在安第斯山麓和平原之间以及该盆地的南北之间具有不同的生理和气候特征，这就是为什么安第斯山麓的主要河流（马拉尼昂，华拉加，乌卡亚里）有8个测量站的原因）和平原（Marafion，Tigre，Napo，Ucayali和亚马逊河）。自2003年以来，ORE-Hybam（IRD-SENAMHI-UNALM）天文台在亚马逊盆地的战略要地进行了定期测量，以了解和建模系统，行为和长期动态。在安第斯山麓上，悬浮的产量由一个简单的模型控制，该模型具有河流流量和沉积物浓度之间的关系。在平原上，浓度的稀释作用每月都会在这种关系中产生滞后现象。秘鲁的亚马逊盆地沉积物产量为541 * 10〜6 t年〜（-1）70％来自南部盆地。

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  • 来源
    《Journal of South American earth sciences》 |2013年第7期|75-84|共10页
  • 作者

    Elisa Armijos; Alain Crave; Philippe Vauchel; Pascal Fraizy; William Santini; Jean-Sebastien Moquet; Nore Arevalo; Jorge Carranza; Jean-Loup Guyot;

  • 作者单位

    LBA, Institute National de Pesquisas da Amazonia (INPA), Universidade do Estado do Amazonas (UEA), Av. Andre Araujo, 2936, Aleixo, CEP 69060-001, Manaus, Brazil;

    Geostience Rennes, CNRS/INSU UMR 6118, Campus de Beaulieu, 35042 Rennes, France,Universite de Rennes 1, Campus de Beaulieu, 35042 Rennes, France;

    GET (CNRS, IRD, OMP, University de Toulouse), 14 Avenue Edouard Belin, 31400 Toulouse, France;

    GET (CNRS, IRD, OMP, University de Toulouse), 14 Avenue Edouard Belin, 31400 Toulouse, France;

    GET (CNRS, IRD, OMP, University de Toulouse), 14 Avenue Edouard Belin, 31400 Toulouse, France;

    Universidade de S&o Paulo, Instituto de Geocientias, Rua do logo, 562, cidade Universitaria Sio Paulo, Sao Paulo, Brazil;

    UNALM, Universidad National Agraria La Molina, Facultad de Ingenieria Agricola, Avenida La Molina s, Lima 12, Peru;

    SENAMHI - DGH Servitio National de Meteorologia e Hidrologia, Direcadn General de Hidrologia, Casilla 11-1308, Lima 11, Peru;

    GET (CNRS, IRD, OMP, Universite de Toutouse), IRD, CP 7091 Logo Sul, CEP 71635-971 Brasilia, DF, Brazil;

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  • 正文语种 eng
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  • 关键词

    Hydrology; Sedimentation; Erosion; Andes; Sediment transport; Andean piedmont;

    机译：水文学;沉降;侵蚀;安第斯山脉;泥沙运输;安第斯山麓;

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