SOME MUDSLIDE MOVEMENT PATTERNS

被引：34

作者：

ALLISON, RJ ^{[1
]}

BRUNSDEN, D ^{[1
]}

机构：

[1] UNIV LONDON KINGS COLL, DEPT GEOG, LONDON WC2R 2LS, ENGLAND

来源：

EARTH SURFACE PROCESSES AND LANDFORMS | 1990年 / 15卷 / 04期

关键词：

Isle of Purbeck; Mass movement; Mudslide; Pore water pressure;

D O I：

10.1002/esp.3290150402

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

A study has been made of the mechanisms of movement in a mudslide and the interrelationships between the controlling variables. Detailed monitoring has been conducted on a mudslide developed in the Wealden Beds, a Cretaceous mudrock. The parameters which govern mudslide instability have been continuously monitored using electronic datalogging techniques. Slip can be divided into four components: small ‘multiple’ (stick slip) movements which are grouped temporally; gradual or ‘graded’ slip within defined temporal limits; rapid ‘surge’ events which occur over a short time interval and involve large displacements and unexplained ‘random’ movements. Each of these four components occurs with varying frequency and at different times in the seasonal record. Slip is usually separated by periods of little or no change. Each component of mudslide movement displays characteristic patterns of pore water pressure change. Copyright © 1990 John Wiley & Sons, Ltd

引用

页码：297 / 311

页数：15