Temperature, Water Chemistry, and Optical Properties of Crater Lake
Temperature, Water Chemistry, and Optical Properties of Crater Lake
复制标题
火山口湖的温度、水化学和光学特性
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
M. Buktenica
中科院分区：
文献类型：
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作者：
G. Larson;C. Mcintire;M. D. Hurley;M. Buktenica
摘要1983~1991年对火山口湖的水温、水化学和光学性质进行了研究。冬季和春季，风能和对流将水柱混合到200~250m的深度，夏季和初秋为热力层结，但表层厚度只有5~20m，589m深的水柱大部分是冷水。该湖呈微基性，具有中等的碱性和导电性。尽管在夏末和初秋，湖底附近的溶解氧浓度略有下降，但水柱是充氧的。磷和氮的浓度较低。正磷酸盐含量随湖深的增加略有增加，而硝态氮在水柱上部200m处低于检测下限，然后随湖深的增加而增加。赛奇磁盘的清晰度通常从高-20米到低-30米不等。7月份和8月份1%的表面入射光(425-655 nm)的深度是最大的。
ABSTRACT Water temperature, water chemistry, and optical properties of Crater Lake were studied from 1983 to 1991. In winter and spring, wind energy and convection mixed the water column to a depth of 200 to 250 m. The lake was thermally stratified in summer and early fall; however, the epilimnion was only 5 to 20 m thick, and most of the 589 m deep water column was a cold hypolimnion. The lake was slightly basic, with moderate alkalinity and conductivity. The water column was oxygenated, although slight decreases in dissolved oxygen concentration were noticed near the lake bottom in late summer and early fall. Phosphorus and nitrogen concentrations were low. Orthophosphorus-P concentrations increased slightly with increased lake depth, whereas nitrate-N was below detection limits in the upper 200 m of the water column and then increased with increased lake depth. Secchi disk clarity typically varied from the high-20-m to low-30-m range. The depth of 1 % surface incident light (425–655 nm) in July and Aug...