@article{oai:kanazawa-u.repo.nii.ac.jp:00057312,
 author = {Ohtsuka, Yoshihito and Yamamoto, Masayoshi and Kofuji, Hisaki and Yokota, Ki-ichirou and Komura, Kazuhisa and 大塚, 良仁 and 山本, 政儀 and 小藤, 久毅 and 横田, 喜一郎 and 小村, 和久},
 issue = {2},
 journal = {地球化学, Chikyukagaku},
 month = {Jun},
 note = {The behavior of 210Pb and 210Po in Lake Biwa, a large mesotorophic lake situated in the Kinki district of Japan, was investigated by analyzing lake water at various depths and precipitation at approximately monthly intervals for a period of 1.5 years, and sediments, streams flowing into and out of the lake. Flux balance calculation indicated that atmospheric deposition was the major source (97% of total) of 210Pb to the lake, and for 210Po growth in-situ from the decay of 210Pb contributed about 75% of the total 210Po supply to the lake. Most (about 90%) of all the 210Pb inputs to this lake was found to be incorporated into sediment. Residence times via sedimentation in the epilimnion and hypoliminion were estimated to be 27 (6-40) and 22 (5-45) days, respectively, for 210Pb and 95 (47-146) and 32 (7-109) days for 210Po. These residence times suggest that there is a difference between 210Pb and 210Po in the extent of their cycling in the water column, with a more rapid removal of 210Pb than 210Po. Overall, 210Pb and 210Po were, furthermore, found to be removed more efficiently during the transit periods of high biological productivity, such as plankton blooms., 金沢大学環日本海域環境研究センター},
 pages = {85--106},
 title = {湖沼環境での物質循環に関する研究: 琵琶湖における天然放射性核種210Pbと210Poの挙動},
 volume = {35},
 year = {2001}
}