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Predictability of currents on a mesotidal estuary (Ria de Vigo, NW Iberia)

机译:中生河口的水流的可预测性(Ria de Vigo,西北伊比利亚)

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摘要

In this contribution, the implementation, validation and sensitivity analysis of an operational forecasting system (three-dimensional hydrostatic model) in the Ría de Vigo is presented. A set of sensitivity tests for different atmospheric and hydrodynamic typical periods was performed. The goal is to determine the relative importance of forcing mechanisms in order to evaluate the source of errors in predictions. Previously, validations for three periods of about 15 days were compared with measured data. Sea-level evolution reveals low errors and correlation values close to 1. Surface velocities were compared with high-frequency radar and horizontal Acoustic Doppler Current Profiler data, showing acceptable results on radar area, where tidal and wind circulation patterns are well reproduced by the model. Conductivity, temperature, and depth profiles were used to validate simulated temperature and salinity. While modelled temperature profiles show good agreement with measured profiles, eventual errors are detected on salinity. The sensitivity analysis took three variables into account: sea level, currents at open boundary conditions, and winds (two different configurations). The results show that the most important source of errors on simulated surface currents is wind. Errors on open boundary conditions seem to be limited on the outermost part of the Ría. Although the results presented mainly focus on the Ría de Vigo, the method and conclusions may be applied to other mesotidal estuaries. Moreover, this work will allow a more effective operational system focused on coastal management to be performed.
机译:在这项贡献中,介绍了维阿河地区一个业务预报系统(三维静水力模型)的实施,验证和敏感性分析。对不同的大气和水动力典型时期进行了一套敏感性测试。目的是确定强制机制的相对重要性,以便评估预测中的错误来源。以前,将三个大约15天的验证与测量数据进行了比较。海平面演变揭示了较低的误差和接近1的相关值。将表面速度与高频雷达和水平声多普勒电流剖面仪数据进行了比较,显示了雷达区域可接受的结果,其中潮汐和风环流模式被该模型很好地再现了。电导率,温度和深度剖面用于验证模拟的温度和盐度。尽管建模的温度曲线显示出与测得的曲线良好吻合,但最终发现了盐度误差。敏感性分析考虑了三个变量:海平面,开放边界条件下的水流和风(两种不同的配置)。结果表明,模拟表面电流上最重要的误差来源是风。开放边界条件下的错误似乎仅限于Ría的最外部。尽管给出的结果主要集中在维哥河上,但该方法和结论可能适用于其他中游河口。此外,这项工作将使更有效的以沿海管理为重点的业务系统得以执行。

著录项

  • 来源
    《Ocean Dynamics》 |2013年第3期|131-141|共11页
  • 作者单位

    Laboratori d’Enginyeria Marítima Universitat Politècnica de Catalunya (LIM/UPC)">(1);

    Laboratori d’Enginyeria Marítima Universitat Politècnica de Catalunya (LIM/UPC) and International Centre of Coastal Resources Research (CIIRC)">(2);

    Laboratori d’Enginyeria Marítima Universitat Politècnica de Catalunya (LIM/UPC) and International Centre of Coastal Resources Research (CIIRC)">(2);

    SIMO (Soluciones de Ingeniería Marítima Operacional)">(3);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    3D Hydrodynamic model; Predictability of currents; Estuary; Sensitivity analysis; Ría de Vigo;

    机译:3D水动力模型;电流的可预测性;河口;敏感性分析;维阿河;

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