SGER: Amplification of El Nino-Southern Oscillation (ENSO) Climate Effects in Estuaries

本项目将通过分析悬浮颗粒物（SPM）收支来研究厄尔尼诺/南方涛动（ENSO）对河口环流的影响。这项研究的一个重要理由是观察到的西海岸河流流出量与ENSO周期的相关性。ENSO效应在河流SPM排放中似乎被放大，因为后者通常随河流排放非线性变化（幂大于1）。假设河口环流将放大ENSO信号在河流流出和SPM运输通过改变剩余流量和流体动力学捕获的颗粒将在哥伦比亚河使用历史和最近（1997-98年厄尔尼诺）的数据集进行测试。

JayThis project will investigate El Nino/ Southern Oscillation (ENSO) effects on the estuarine circulation through the analysis of suspended particulate matter (SPM) budgets. An important justification for the study is the observed correlation of West coast river outflows with ENSO cycles. The ENSO effects appeared to be amplified in fluvial SPM discharge since the latter typically varies non linearly (with a power greater than one) with the river discharge. The hypothesis that estuarine circulation will amplify ENSO signals in river outflow and SPM transport by altering the residual flow and the hydrodynamic trapping of particles will be tested in the Columbia River using historical and recent (1997-98 El Nino) data sets.