...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Identification and characterisation of two optical water types in the Irish Sea from in situ inherent optical properties and seawater constituents
【24h】

Identification and characterisation of two optical water types in the Irish Sea from in situ inherent optical properties and seawater constituents

机译：从原位固有光学特性和海水成分鉴定和表征爱尔兰海中的两种光学水类型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper examines relationships between the inherent optical properties (IOPs) of the Irish Sea and concentrations of optically significant constituents, measured as chlorophyll (Chl), mineral suspended solids (MSS) and coloured dissolved organic material (CDOM). In situ measure-ments of IOPs at 98 stations fell into two groups with distinct characteristics. Instances include the ratio of particulate backscattering to non-water absorption at 676 nm (b_(bp)676/a_n676), the ratio of the non-water absorption coefficients at 440 nm and 676 nm (a_n440/a_n676) and the ratio of particulate scattering to non-water absorption (b_p/a_n) at 676 nm. The two groups showed corresponding differences in the proportions of their constituent concentrations with Chl/MSS values typically above 0.4 mg g~(-1) for stations with b_(bp)676/a_n676 < 0.33 and below 0.4 mg g~(-1) for stations withb_(bp)676/a_n676 > 0.33. CDOM concentrations showed no significant differences between groups. The occurrence of correlated groups in the IOP and constituent concentration data indicates the existence of identifiable sub-types of coastal water within the conventional Case 2 classification whose optical characteristics were dominated either by phytoplankton or suspended minerals. By applying linear regression analysis to the two groups we derived effective material-specific IOPs for these natural particle assemblages. The coefficients obtained enabled the successful reconstruction of total absorption, scattering and backscattering coefficients for a given water body from measurements of Chl, MSS and CDOM. This procedure may be useful for assimilating measurements of seawater composition into bio-optical models in shelf seas.
机译：本文研究了爱尔兰海的固有光学性质（IOP）与光学重要成分的浓度之间的关系，这些成分以叶绿素（Chl），矿物悬浮固体（MSS）和有色溶解有机物质（CDOM）的形式测量。 98个站点的IOP现场测量分为两组，各有特点。实例包括在676 nm处颗粒的反向散射与不吸水的比率（b_（bp）676 / a_n676），在440 nm和676 nm处的非吸水系数的比率（a_n440 / a_n676）和颗粒的比率在676 nm处散射为非吸水率（b_p / a_n）。两组在b_（bp）676 / a_n676 <0.33且低于0.4 mg g〜（-1）的站中，其成分浓度比例的差异通常为0.4 mg g〜（-1）以上的Chl / MSS值。对于b_（bp）676 / a_n676> 0.33的电台。 CDOM浓度在各组之间没有显着差异。 IOP和成分浓度数据中相关组的出现表明，在常规案例2分类中存在可识别的沿海水亚型，其光学特征主要是浮游植物或悬浮矿物质。通过对两组应用线性回归分析，我们得出了这些天然粒子组合的有效材料特定的IOP。所获得的系数使得能够根据Chl，MSS和CDOM的测量成功重建给定水体的总吸收，散射和反向散射系数。该程序对于将货架海水中海水成分的测量结果吸收到生物光学模型中可能很有用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号