Compound landslides: Nature and hazard potential of secondary landslides within host landslides
Published:January 01, 1992
Vincent S. Cronin, 1992. "Compound landslides: Nature and hazard potential of secondary landslides within host landslides", Landslides/Landslide Mitigation, James E. Slosson, Arthur G. Keene, Jeffrey A. Johnson
Download citation file:
Large host landslides commonly encompass smaller, secondary landslides; hence the term “compound landslide.” Secondary landslides differ significantly from their host landslide in that secondary slides (1) have smaller volume; (2) often have greater surface exposure; (3) are more readily saturated by water infiltration; (4) require a smaller driving force to initiate movement; (5) have greater frequency of movement; and (6) their capacity for movement can be either independent of the host and other adjacent secondary landslides, or induced by adjacent landslides. Multilevel flow systems (perched water tables) commonly form within compound landslides due to the relatively low permeability of...
Figures & Tables
Provides a variety of case histories, methodology to help identify, quantify, and mitigate landlsides, and legal cases affecting engineering geology. Part I provides basic information to aid in assessing geologic hazards related to compound landslides, surficial slope failures, and causes of distress to residential construction. Includes changes in the law relating to geologic investigations and disclosure of geotechnical information. Part II is a cross section dealing with recent significant landslides related to a single storm, intense rainfall, possible errors in the identification of and development on an existing or paleolandslide, and the use of pumping wells and horizontal drains to dewater slope failures. Also discusses how proper installation and use of drains prevent paleolandlsides from causing damage to modern facilities.