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首页> 外文期刊>Journal of the American Water Resources Association >RESOLUTION AND ANALYSIS OF SPATIAL VARIATIONS AND PATTERNS IN AN URBAN LAKE WITH RAPID PROFILING INSTRUMENTATION
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RESOLUTION AND ANALYSIS OF SPATIAL VARIATIONS AND PATTERNS IN AN URBAN LAKE WITH RAPID PROFILING INSTRUMENTATION

机译：快速仿形仪分析和分析城市湖泊的空间变化和格局

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Rapid response vertical profiling instrumentation was used to document spatial variability and patterns in a small urban lake, Onondaga Lake, associated with multiple drivers. Paired profiles of temperature, specific conductance (SC), turbidity (T-n), fluorometric chlorophyll a (Chl(f)), and nitrate nitrogen (NO3-) were collected at >30 fixed locations (a gridding) weekly, over the spring to fall interval of several years. These gridding data are analyzed (1) to characterize phytoplankton (Chl(f)) patchiness in the lake's upper waters, (2) to establish the representativeness of a single long-term site for monitoring lake-wide conditions, and (3) to resolve spatial patterns of multiple tracers imparted by buoyancy effects of inflows. Multiple buoyancy signatures were resolved, including overflows from less dense inflows, and interflows to metalimnetic depths and underflows to the bottom from the plunging of more dense inputs. Three different metrics had utility as tracers in depicting the buoyancy signatures as follows: (1) SC, for salinity-enriched tributaries and the more dilute river that receives the lake's outflow, (2) T-n, for the tributaries during runoff events, and (3) NO3-, for the effluent of a domestic waste treatment facility and from the addition of NO3- solution to control methyl mercury. The plunging inflow phenomenon, which frequently prevailed, has important management implications.
机译：快速反应垂直轮廓仪用于记录小型城市湖泊奥诺达加湖（Onondaga Lake）中与多个驱动因素相关的空间变异性和模式。在春季至春季期间，每周在> 30个固定位置（网格）收集温度，比电导（SC），浊度（Tn），荧光性叶绿素a（Chl（f））和硝酸盐氮（NO3-）的配对曲线图。下降间隔为几年。分析这些网格数据（1）表征湖泊上层水域浮游植物（Chl（f））的斑块特征；（2）建立单个长期站点的代表性，以监测整个湖泊的状况；以及（3）解决由流入的浮力作用赋予的多个示踪剂的空间格局。解决了多个浮力信号，包括密度较小的入流引起的上溢，以及金属动力深度的互通，以及密度较大的输入的下沉至底部的下溢。三种不同的度量标准可作为示踪剂来描述浮力特征，如下所示：（1）SC，用于富含盐分的支流和更稀的河流，其接收湖泊的出水;（2）Tn，用于径流事件中的支流，以及（ 3）NO3-，用于生活垃圾处理设施的废水，并通过添加NO3-溶液来控制甲基汞。经常流行的暴跌现象具有重要的管理意义。

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