Debris Flows and Hyperconcentrated Floods Along the Wasatch Front, Utah, 1983 and 1984

Early warning of rainfall-induced shallow landslides and debris flows in the USA

“…Rapid snowmelt has been a factor in several major landslide disasters as well as numerous individual landslides in the western USA (Wieczorek et al 1989;Wiley 2000;Chleborad 1998Chleborad , 2000. Most precipitation thresholds do not specifically account for snowmelt; however, preliminary work indicates that estimating or measuring snowmelt and incorporating the rate of snowmelt into rainfall threshold analysis is feasible (Chleborad 2000).…”

Climatic effect of ENSO associated with landslide occurrence in the Central Andes, Mendoza Province, Argentina

“…Its impacts can be devastating, as illustrated by some of the effects of the unusually strong El Niaeo of 1982-1983: (a) drought and wildfires in many nations of the western and southwestern Pacific Rim, southern Africa, southern India, Spain, Portugal, northern Africa, and South and Central America; (b) severe cyclones that damaged island communities in the Pacific; (c) flooding over wide areas of South America, western Europe, the Gulf Coast and some Caribbean islands; and (d) severe storms in the western and northeastern United States (Reynolds et al 1997). Furthermore, El Niaeo has been associated with greater landslide occurrence around the world (Ellen and Wieczorek 1988;Wieczorek et al 1989;Cayan and Webb 1992;Glantz 1995;Godt et al 1997;Reynolds et al 1997;Ngecu and Mathu 1999). However, in the Argentinian Andes this climatic effect has not been analysed in relation to mass movements.…”

Solving the dilemma of transforming landslide hazard maps into effective policy and regulations

“…In some locations, there are events recorded from the early settlement of the area by Mormon pioneers. The conditions associated with the 1983 and 1984 debris flows and floods are recognized as contributing to similar flooding in 1922 and 1952 (Wieczorek et al, 1989). The extensive debris flow and flood occurrences in 1983 and 1984 resulted from a return to more normal wet conditions after an extended period of drier-than-normal conditions from roughly 1925 to 1980 (Fleming and Schuster, 1985).…”

“…During 1983 and 1984, communities from Willard to Salt Lake City, Utah were impacted by debris flows and sedimentladen floods (Wieczorek et al, 1989). Statewide, direct impacts sustained from landslides, debris flows, and floods cost more than $400 million over a three month period in the spring of 1983 (Anderson et al, 1985).…”