Lake Mendota Microbial Observatory Secchi Disk Measurements 2012-present

The Lake Mendota Microbial Observatory collects routine water clarity measurements alongside their microbial samples. This dataset includes measurements of water clarity collected at the central Deep Hole, collocated with a weather buoy (43°05'58.2"N 89°24'16.2"W). All measurements were collected with handheld Secchi discs. When multiple personnel performed the Secchi disc measurements, the average and standard deviation are reported. To take the Secchi depth, sunglasses are removed and the disc is lowered on the shaded side of the boat. The Secchi depth is the average between where the Secchi disc disappears while lowering it and where it reappears while raising it. Routine microbial observatory sampling continues into the present.

门多塔湖微生物观测站（Lake Mendota Microbial Observatory）会同步开展微生物样本采集与常规水体透明度测量工作。本数据集包含在中央深水区（Deep Hole）采集的水体透明度测量数据，该点位与一处气象浮标（weather buoy）同址布设，坐标为43°05′58.2″N 89°24′16.2″W。所有测量均采用手持塞氏盘（Secchi disc）完成。若由多名操作人员开展塞氏盘测量，则会上报测量结果的平均值与标准差。开展塞氏深度（Secchi depth）测量时，需摘下太阳镜，将圆盘从船体背光侧下放。塞氏深度为塞氏盘下放过程中消失的位置与上浮过程中重现的位置的平均值。该观测站的常规微生物采样工作目前仍在持续进行。