A bottom water sampler for determining chemical gradients across the water-sediment interface
A bottom water sampler for determining chemical gradients across the water-sediment interface
复制标题
用于确定水-沉积物界面化学梯度的底部水采样器
DOI：
10.1016/j.marpolbul.2017.01.052
复制
发表时间：
2017
影响因子：
5.8
通讯作者：
Kau Kwok Kei
中科院分区：
文献类型：
--
作者：
Chong Kit Yee;Liu Hao;Yin Kedong;Harrison Paul J.;Kau Kwok Kei
我们开发了一种廉价的底层水采样器，可以从一艘小船上操作，以获得高分辨率的溶解氧（DO），叶绿素，悬浮颗粒物（SPM）的垂直剖面。这些垂直剖面使我们能够检查底部再悬浮过程，并估计其底栖通量的营养盐在浅水沿海沃茨的沉积物-水界面。采样器由一个2米长的厚壁透明管组成，26个采样口间隔8-10厘米。每个采样间隔至少包含300- 370 ml水样。在不同的潮汐阶段进行了两次测试采样，并在底部溶解氧，铵和悬浮颗粒物的差异被认为是显着的两次测试之间。我们的研究结果表明，这种底部采样器是必不可少的，以研究沉积物-水层耦合过程，获得高分辨率的各种参数在2米水柱以上的沉积物。
We developed an inexpensive bottom water sampler that can be operated from a small boat in order to obtain high resolution vertical profiles of dissolved oxygen (DO), chlorophyll, suspended particulate matter (SPM). These vertical profiles allow us to examine bottom resuspension processes and to estimate their benthic fluxes of nutrients across the sediment–water interface in shallow coastal waters. The sampler consists of a 2 m long thick-walled transparent tube with 26 sampling ports at 8–10 cm intervals. Each sampling interval contains a minimum of 300– 370 ml water samples. Test sampling was conducted twice during different tidal phases, and differences in bottom DO, ammonium and SPM were found to be significant between the two tests. Our results suggest that this bottom sampler is essential in order to study sediment-pelagic coupling processes by obtaining high resolution of various parameters in the 2 m water column above the sediment.