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首页> 外文期刊>Estuarine Coastal and Shelf Science >Variability in a fjord-like coastal estuary I: Quantifying the circulation using a formal multi-tracer inverse approach
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Variability in a fjord-like coastal estuary I: Quantifying the circulation using a formal multi-tracer inverse approach

机译：峡湾般的沿海河口的变异性I：使用正式的多示踪反演方法量化环流

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During 2002-2005, a comprehensive set of observations covering physical, biological, radiative and atmospheric parameters was obtained from the southern Strait of Georgia (SoG), Western Canada by the STRATOGEM program. Monthly time series of estuarine layer transports over 2002-2005 were estimated using a time-dependent 2-box model in a formal inverse approach. The formal inverse approach builds up upon a so-called "pseudo-inverse" and the Singular Value Decomposition methodology. The transports are then consistent with the temperature and salinity fields, as well as riverine freshwater inflow ® and detailed atmospheric heat fluxes. Uncertainty was analyzed by resampling observations using bootstrap methods. Analysis of these time series suggests that the SoG estuarine circulation is not very sensitive to the seasonal changes of R. Comparison of the surface layer transport (U1) and R yields the first observational relationship between the SoG estuarine circulation and R. The analysis of this relationship shows that U1 has a fractional form as R to the power of 1 with n ＜ 1. Such fractional relationship shows that the flows change only slightly with the freshet. A 5-fold change in R results only in a 40% change in U1. However, freshwater range and uncertainty in the data prevented us from clearly determining the fraction n. Analysis of the transports in light of the residuals in the mass, heat and salt budgets suggests that our inversion procedure works properly and improves on the SVD inverse procedure. Analysis of the transports sensitivity to inversion parameters shows that the transports are close to both the a priori and true transports and that thev are dependent on both a Driori information and data.
机译：在2002年至2005年期间，通过STRATOGEM计划从加拿大西部的乔治亚州南部海峡（SoG）获得了一套涵盖物理，生物，辐射和大气参数的综合观测资料。在正式的逆方法中，使用时间相关的2-box模型估计了2002-2005年河口层运输的每月时间序列。形式上的逆方法建立在所谓的“伪逆”和奇异值分解方法论之上。这样的传输与温度和盐度场，河流淡水入流®和详细的大气热通量是一致的。使用自举方法对观测值进行重采样分析不确定性。对这些时间序列的分析表明，SoG河口环流对R的季节变化不是很敏感。通过比较表层迁移率（U1）和R，得出了SoG河口环流与R之间的第一个观察关系。关系式表明，U1的分数形式为R，n ＜1时，n≤1。n这种关系式表明，流量随新鲜度的变化很小。 R的5倍变化仅导致U1的40％变化。但是，淡水范围和数据的不确定性使我们无法清楚地确定分数n。根据质量，热量和盐分预算中的残差进行的运输分析表明，我们的反演程序可以正常工作，并且在SVD逆程序上有所改进。输运对反演参数的敏感性分析表明，该输运既接近先验运移，又接近真实运移，并且v依赖于Driori信息和数据。

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