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冰川冻土 ›› 1984, Vol. 6 ›› Issue (2): 27-35.

• 研究论文 • 上一篇    下一篇

雪线地带性的定量分析

蒋忠信   

  1. 铁道部第二勘测设计院三总队
  • 收稿日期:1982-12-07 出版日期:1985-05-25 发布日期:2012-04-26

Quantitative Analysis of Snowline Zonality

Jiang Zhongxin   

  1. The 2nd Railroad Survey and Design Institute
  • Received:1982-12-07 Online:1985-05-25 Published:2012-04-26

摘要: 雪线分布高度从极地向赤道纬度呈现规律性变化,显示出明晰的水平地带性规律。我们曾探讨过北半球雪线地带性的经验数学模式[1],本文则给出雪线地带性模式在南半球的数学形式,并进而定量分析制约雪线地带性规律的主要因素。

Abstract: Horizontal snowline zonality in both the southern and northern hemispheres obeys the mathematical model of normal frequency distributiqnf unction: H=5995e-0.001354(φ-16.5)2-210 In the southern hemisphere: H=5462e-0.006353(φ-18.5)2-250 In the northern hemisphere:Their maximum values appear at a low latitude area(16.5°, 18.5°), and inflection points appear at a middle latitude area(35° 43’, 46° 33').Snowline elevation H depends on the relative annual average temperature △T andthe difference △h between annual ablation value and precipitation. It is: H=a+bTh(a and d are positive) △T△h conforms to the zonality model of normal frequency distributionfunction (△Th=ae-b(φ-b)2-C, showing that the snowline zonalityresults from the zonality of moisture and heat distribution.