Changes in the limnological features of a meromictic Lake Suigetsu during the years, 1926–1967 |
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| Authors: | Michiro Matsuyama |
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| Institution: | (1) Water Research Institute, Nagoya University, Chikusa-ku, 464 Nagoya, Japan |
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| Abstract: | Changes in the limnological features of a typical meromictic lake, Lake Suigetsu, from 1926 to 1967 are summarized. Until 1934, the lake was stratified due to the balance between the flushing of fresh water and the intrusion of salt water through a canal by which the lake was connected to a coastal polyhaline lake. Total chloride content of the lake had been within the range of 100–230×103 tons and the thermal stratification had been well developed. In 1934, another channel was constructed, by which the lake was connected to another polyhaline coastal lake. This resulted in the influx of large quantities of salt water (maximum total chloride content of the lake: 790×103tons), and characteristics of stratification were altered. In the data after 1951, a two-layered system was re-established (total chloride content of the lake: 470–620×103tons), and distinct stratification began to appear. |
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