Movimientos de Masas de suelo y/o rocas (Mass Wasting)Ing. Carlos Castillo AlbinesMonroe & Wicander (4ta ed),Cap. 4, pags. 4!!"4#$Mameyes, Ponce PR (1985)The Mameyes, Puerto Rico, landslide, 1985. This landslide destroyed 120 houses and killed at least 129 eole, the !reatest num"er o# casualties #rom any sin!le landslide in $orth %merica. The catastrohic "lock slide &as tri!!ered "y a troical storm that roduced e'tremely hea(y rain#all. )ontri"utin! #actors could also ha(e included se&a!e directly dischar!ed into the !round in the densely oulated area, and a leakin! &ater ie at the to o# the landslide. Photo!rah "y R.*. +i"son, ,.-. .eolo!ical -ur(ey./esli0amiento .u1nica, 2002Pro"lemas en(ueltos3334u5 es mo(imiento de masa36Mo(imiento de material endiente a"a7o causado or la in#luencia de la !ra(edad)ausas del mo(imiento de masas de suelo8roca6$atural9Meteori0aci:n9-ismos9;lu(ia6ala el terreno ro(ocando el derrum"e9 Relacionada con?6 Masa del material6 Pendiente6 =ricci:n (shearin! stren!th)9 Resistencia? @(ita derrum"e =uer0a !ra(itacional=riccion A cohesi(idad(shearin! stren!th)-hearin! stren!th Menorshearin! stress B derrum"e=actores Cue a#ectan la tonsura y #riccion6-on determinantes ara Cue ocurran o no derrum"es6-on?9Pendiente9=luidos9De!etacion9-ismos9Meteori0acion y clima9-o"reeso=actores? Pendiente6Mayor inclinaci:n, mayor tonsura, mayor el ries!o de derrum"e6%n!ulo de reoso9