Glacier Fluctuations in the Southern Alps of New Zealand Determined from Snowline Elevations

Glacier Fluctuations in the Southern Alps of New Zealand Determined from Snowline Elevations
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根据雪线高程确定新西兰南阿尔卑斯山的冰川波动

DOI:
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发表时间:
1995
期刊:
Arctic and Alpine Research
影响因子:
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通讯作者:
T. Chinn
T. Chinn
中科院分区:
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文献类型:
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作者:
T. Chinn

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初步分析452个测定的夏末冰川雪线高度(ELAs)超过17年的47个冰川表现出良好的相关性与主要的气候事件,并符合冰川终点的波动时,考虑到反应时间。由于雪线高度被用作年度物质平衡值的替代物,最近出现了物质平衡增加的趋势,即气候{open_quotes}变冷,{close_quotes}这是在长时间的主要冰川衰退之后出现的。雪线趋势面绘制的新西兰南阿尔卑斯山显示相当大的翘曲与变量偏离稳定状态的平衡线海拔每年。目前较为活跃的冰川的复苏在不久的将来应该会继续下去。参考文献39篇,10图,1个选项卡。
Preliminary analysis of 452 determinations of end-of-summer glacier snowline altitudes (ELAs) made over 17 yr on up to 47 glaciers show good correlation with major climatic events, and conform well with fluctuations of glacier termini when reaction times are taken into consideration. With snowline altitudes used as surrogates for annual mass balance values, there is a recent trend to increased mass balances, i.e. a climate {open_quotes}cooling,{close_quotes} which follows a long period of predominantly glacial recession. Snowline trend surfaces plotted for the Southern Alps of New Zealand show considerable warping with variable departures from the steady-state equilibrium-line altitude each year. The current resurgence of the more active glaciers should continue in the near future. 39 refs., 10 figs., 1 tab.