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

Jay本项目将通过对悬浮颗粒物(SPM)预算的分析，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外流与ENSO循环的相关性。ENSO效应似乎在河流SPM流量中被放大，因为后者通常随着河流流量而非线性变化(功率大于1)。河口环流将通过改变残流和颗粒的水动力捕获，在河流出流和SPM输送中放大ENSO信号的假设将在哥伦比亚河利用历史和最近(1997-98年厄尔尼诺)数据集进行检验。

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.