As cross‐shelf gradients of most properties are typically much steeper than those in the alongshore direction, transport across isobaths tends to be inhibited, particularly at oceanic fronts where cross‐shelf gradients are markedly pronounced. Consequently, variations in cross‐shelf gradients may exert a significant influence on offshore transport; however, this influence is not yet well understood. This study employs reconstructed daily suspended sediment concentration (SSC) data from the Yellow Sea's offshore region to investigate the dynamics of offshore transport. Our analysis on an interannual scale shows that offshore SSC correlates more with temperature gradients at the oceanic front than with winter storms, despite the latter's vital role in causing frontal instability. The observed increase in offshore transport over the past two decades is likely connected to Kuroshio Current warming, which has strengthened the horizontal density gradient at the oceanic front, driving the strengthened offshore transport of coastal sediments during instability episodes.

中文翻译：

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近期黑潮变暖促进了黄海近海沉积物输送

由于大多数属性的跨陆架梯度通常比沿岸方向陡峭得多，因此跨等深线的运输往往会受到抑制，特别是在跨陆架梯度明显明显的海洋前沿。因此，跨陆架梯度的变化可能对近海运输产生重大影响；然而，这种影响尚不清楚。本研究利用黄海近海地区重建的每日悬浮泥沙浓度（SSC）数据来研究近海运输的动态。我们对年际尺度的分析表明，近海SSC与海洋锋面温度梯度的相关性高于与冬季风暴的相关性，尽管后者在造成锋面不稳定方面发挥着至关重要的作用。过去二十年观察到的近海运输增加可能与黑潮变暖有关，黑潮变暖加强了海洋前缘的水平密度梯度，在不稳定时期推动了沿海沉积物的近海运输加强。