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Absorption properties in shoal dominated regions of the Atchafalaya shelf, Louisiana,USA

机译:阿妥塞亚架子座座位座位的吸收特性,美国路易斯安那州路易斯安那州

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摘要

The shoal dominated region of the Atchafalaya shelf in the northern Gulf of Mexico is an important resource for sand mining in Louisiana, USA. Algal blooms are seen each year in the study area like most of the northern Gulf of Mexico. Absorption measurements carried out in this region are presented and analyzed. The freshwater input from the Atchafalaya River and the surrounding coastal wetlands and submerged shoals make this area optically complex. Case 1 Ocean Color Algorithms (OCA) do not perform well in these complex case 2 waters. This is because these algorithms do not account for strong blue wavelength absorption by CDOM (colored dissolved organic matter) and NAP (non-algal particulate matter) as observed in our study area. Also the specific phytoplankton absorption a*PHY(lambda) was found to be variable which indicated the pigment packaging effect would influence retrieval of chlorophyll concentration from standard OCA. OCA's that can separate contributions of CDOM and NAP and based on the red region of the spectrum where interference of CDOM and NAP is less will work better towards remote monitoring of blooms.
机译:墨西哥北湾阿特克费拉架的浅埋地区是美国路易斯安那州沙坑的重要资源。每年在墨西哥北部大部分北部的研究区域看到藻类绽放。提出和分析了该区域中进行的吸收测量。来自阿特彻法拉河和周围的沿海湿地和潜水浅滩的淡水投入使这个区域是光学复杂的。案例1海洋颜色算法(OCA)在这些复杂的情况下,在这些复杂的情况下不太良好。这是因为这些算法不考虑在我们的研究区域中观察到的CDOM(彩色溶解有机物)和午睡(非藻类颗粒物)的强大蓝色波长吸收。此外,发现特定的植物浮游植物A * phy (λ)是可变的,这表明颜料包装效果会影响来自标准OCA的叶绿素浓度的检索。 OCA可以将CDOM和NAP的贡献分开,并基于CDOM的干扰的频谱的红色区域较少将更好地用于远程监控绽放。

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  • 来源
    《OCEANS》|2008年||共6页
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    Naik P.; DSa E.;

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  • 中图分类 P75-53;
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