We study the marine and terrestrial contributions in the Gulf of California (GC) to understand the relationship between continental climate and oceanographic variability over the last 28 ka. In Core AII125‐8‐JPC‐20, we examine aeolian and riverine inputs as nutrients for biological productivity. We use biogenic silica (%opal), total organic carbon (%TOC) and calcium carbonate (%CaCO₃) as proxies for primary productivity, and lithic fraction distributions as proxies for terrigenous transport. At the core site, biogenic and lithic components are in phase at millennial‐scale in response to regional climate conditions. During the Late Pleistocene, the GC shelf area was above sea level and the western margin showed transient episodes of increased fluvial inputs. Episodic increases in %opal and reduced %TOC suggest upwelling events but ineffective C‐export to the sediment. During stadial events (Heinrich 2, Heinrich 1, Younger Dryas), regional declines in %opal, but increases in %CaCO₃ and TOC, suggest efficient C‐export by carbonate organisms. During most of the Holocene, dust inputs are higher. Episodic increases in %TOC suggest higher C‐accumulation, although this is not controlled by siliceous or calcareous organisms. In the GC, besides upwelling and current advection, nutrient inputs driven by terrestrial climate have an impact on the biological C‐pump. © 2020 John Wiley & Sons, Ltd.

中文翻译：

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最近28 ka期间加利福尼亚湾海洋生产力与地面输入记录之间的比较

我们研究了加利福尼亚湾（GC）的海洋和陆地贡献，以了解过去28 ka期间大陆性气候与海洋变化之间的关系。在核心AII125-8-8JPC-20中，我们检查了风沙和河流投入作为生物生产力的养分。我们使用生物二氧化硅（％opal），总有机碳（％TOC）和碳酸钙（％CaCO ₃）作为初级生产力的代理，而岩屑分数分布作为陆源运输的代理。在核心站点，响应区域气候条件，成千上万的生物成因和岩性成分是同相的。在晚更新世期间，气相色谱架面积在海平面以上，西部边缘显示出河流输入增加的短暂事件。蛋白石的百分率增加和TOC的降低表明发生上升事件，但C出口到沉积物的效率低下。在体育赛事中（Heinrich 2，Heinrich 1，Younger Dryas），区域蛋白石百分比下降，但CaCO ₃百分比上升和TOC建议碳酸盐生物体进行有效的C出口。在大多数全新世期间，粉尘输入较高。尽管TOTOC％TOC的增加是由硅质或钙质生物控制的，但它的C累积增加。在GC中，除了上升流和对流作用外，陆地气候驱动的养分输入还对生物碳泵产生影响。分级为4 +©2020 John Wiley＆Sons，Ltd.