在纳拉甘西特湾,总悬浮沉积物(TSS)的光衰减,有色溶解有机物(CDOM),浮游植物叶绿素a(chl-a)色素占129%,97%,70%,分别,纯海水。光衰减的空间分布表明上湾的值较高,有沉积物和营养丰富的水的河流进入并提升TSS,CDOM,和chl-a浓度。夏季(7月至8月)的光衰减的时间趋势在海湾的各个位置有所不同,7月的最高价值。在同一时期,光谱方法高估了整个海湾的衰减。这些发现量化了光衰减在空间和时间上的行为,提供信息,以指导与改善水透明度有关的决策,并帮助了解各种环境和管理情景对水的影响。
In Narragansett Bay, light attenuation by total suspended sediments (TSS), colored dissolved organic matter (CDOM), and phytoplankton chlorophyll-a (chl-a) pigment is 129%, 97%, and 70%, respectively, of that by pure seawater. Spatial distribution of light attenuation indicates higher values in the upper Bay, where rivers with sediment and nutrient-rich waters enter and elevate TSS, CDOM, and chl-a concentrations. The temporal trends of light attenuation during the summer months (July-August) differed at various locations in the Bay, having the highest values in July. For the same period, spectral methods overestimated attenuation throughout the Bay. These findings quantify the behavior of light attenuation in space and time, providing information that can guide decisions related to improving water clarity and help understanding the effects of various environmental and management scenarios on it.