.png){kind=icon}
返回
.png){kind=icon}
.png){kind=icon}
摘要
En 中文
Based on a review of observations on different types of calving glaciers, a simple calving model is proposed. Glaciers that exist in a sufficiently cold climate can form floating ice shelves and ice tongues that typically do not extend beyond confinements such as lateral cord walls or mountains, and ice rises. If the local climate exceeds the thermal limit of ice shelf viability, as is the case for temperate glaciers, no floating tongue can be maintained and the position of the terminus is determined by the thickness in excess of flotation. If the snout is sufficiently thick, a stable terminus position at the mouth of the confining fjord-usually marked by a terminal shoal-can be maintained. Further advance is not possible because of increasing sea-floor depth and diverging flow resulting from lack of lateral constraints. If a mass balance deficiency causes the terminal region to thin, retreat is initiated with the calving front retreating to where the thickness is slightly in excess of flotation. In that case, the calving rate is determined by glacier speed and thickness change at the glacier snout. Advance or retreat of the calving front is not driven by changes in the calving rate, but by flow-induced changes in the geometry of the terminal region. This model is essentially different from prior suggestions in which some empirical relation-most commonly the water-depth model-is used to calculate calving rate and the rate of retreat or advance of the terminus.
Keyword:
calving
Columbia Glacier
icebergs
ice shelves
lacustrine glaciers
tidewater glaciers
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
P
IF:
3.6
论文数:
957
被引数:
4.5K
机构
暂无机构信息
引用论文
.png){kind=icon}
An MRI Analysis of the Dissolution of a Soluble Drug Incorporated within an Insoluble Polymer Tablet.png)
PREAI
.png){kind=icon}
分享.png){kind=icon}
收藏Further Studies on Aggregation and Insolubilization of Soybean 11S Globulin with Humidity during Storage关于大豆11S球蛋白在储存期间与湿度相关的聚集和不可溶化的进一步研究
PREAI
分享收藏
查看更多内容