Temperature and bathymetry of ice‐contact lakes in Mount Cook National Park, New Zealand
Temperature and bathymetry of ice‐contact lakes in Mount Cook National Park, New Zealand
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新西兰库克山国家公园冰接触湖的温度和水深测量
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. Kirkbride
中科院分区：
文献类型：
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作者：
C. Warren;M. Kirkbride
摘要 随着二十世纪库克山国家公园冰川退缩，形成了几个冰接触湖。它们占据了过度加深的冰川山谷，并被终端冰碛和/或冲水头拦住。 1994年和1995年秋季，对“莫德湖”、“戈德利湖”和胡克湖的温度和水深进行了测量。冰川附近的垂直水温分布比湖泊远端的垂直水温分布表现出更大的温度变化。胡克湖存在热分层，而莫德湖和戈德利湖则完全混合。后者的水温一直在 3 至 4.5°C 之间，但胡克湖的大部分地区温度低于 2°C，最低记录温度为 0.2°C。这些对比很重要，因为冰川末端水下部分的融化对于消融率和崩解末端的动态具有重要意义。所有的湖泊都是陡峭而深的。莫德湖 (Maud Lake) 和戈德利湖 (Godley Lake) 深度接近 100 米，而...
Abstract Several ice‐contact lakes have formed in conjunction with twentieth century glacier retreat in Mt Cook National Park. They occupy overdeepened glacial valleys and are dammed by terminal moraines and/or outwash heads. During the autumns of 1994 and 1995, the temperature and bathymetry of “Maud lake”, “Godley lake”, and Hooker Lake were surveyed. The near‐glacier vertical water temperature profiles exhibited greater temperature variation than those at the distal ends of the lakes. Thermal stratification existed in Hooker Lake, whereas both Maud and Godley lakes were thoroughly mixed. Water temperatures in the latter were consistently between 3 and 4.5°C, but most parts of Hooker Lake were cooler than 2°C, with a minimum recorded temperature of 0.2°C. These contrasts are important because melting of submerged parts of glacier termini is significant for ablation rates and for the dynamics of calving termini. All the lakes are steep sided and deep. Maud and Godley lakes approach 100 m in depth, wherea...