Displacement of a pre-glacial stream by the action of a glacier. In upland areas the new drainage often follows a glacial breach. In lowlands, glacial drift may block an existing valley and lead to stream diversion.
科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。