The response of a glacier to changes in the rate of nourishment and wastage

Author:

Abstract

A glacier changes its length in response to variations in the rate of nourishment and wastage. This process is discussed by means of a linearized perturbation theory. The cross-section and slope of the glacier valley are allowed to be arbitrary and non-uniform , and the discharge of ice through any cross-section is assumed to be a function of the local thickness and surface slope of the ice. It is shown how the response, at any point of the glacier surface, to a given Fourier component of the rate of supply and loss can be computed numerically. The amplitude and phase of the response for all frequencies are adequately covered by series approximations valid for high and low frequencies, respectively. The low-frequency approximation is the important one in practical cases, for it leads to a simple method, not involving Fourier analysis, for translating a known history of glacier variation into a history of nourishment and wastage rates. The frequency response of South Cascade Glacier, Washington, U. S. A., is computed as a practical illustration of the method. It is suggested that the response curves of most glaciers are of the same general shape.

Publisher

The Royal Society

Subject

Pharmacology (medical)

Reference11 articles.

1. E Iliston G. R . 1963 In t. Un.Geod. Geophys. Inst. A ss. of Sci. Hydrol. Commi. Snow & Ice Obergurgl Sym posium Discussion (in th e Press).

2. Proc. Roy;Lighthill M. J .;Soc. A,1955

3. Meier M. F . 1961 U .S. Geol. Surv. Prof. P ap. 4246 206-211.

4. Proposed Definitions for Glacier Mass Budget Terms

5. Meier M. F. & Tangborn W. V. 1963 To be subm itted to J . Glaciol.

Cited by 103 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3