storm-triggered
2 cause loss of life, property damage, and landscape
3. for instance, the
remnants（残余） of hurricane camille in 1969 caused 109 deaths in central virginia, after 600 mm of rain fell in mountainous
4 in 6 hours. more recently, on 8 august 2010, a rainstorm-induced
1 5 the chinese county of zhouqu, causing more than 1000 deaths. a new modeling study by ren examines the multiple factors, both natural and human caused, that came together to produce this event. the
triad（三个一组） of storm-triggered landslides is geological condition, surface loading and vegetation roots, and extreme
precipitation（降水，沉淀）. extreme precipitation can be explained by three factors: low-level moisture buildup,
6 instability, and a lifting
7. when several factors (e.g., el niño years, hurricane remnants, lifting
8 (e.g., orography, cold fronts, jets, and differential heating from land cover contrast), and weather pattern phase-lock) work in synergy in a region, extreme precipitation may occur.
using a multiple-phase scalable and extensible geofluid model, the author considered geological features of the region, as well as an earthquake, drought, deforestation, and
topsoil（表层土） erosion before the triggering storm.
9, drought conditions created cracks and
10 in the surface; these cracks and crevices were deepened by the 2008 m7.9 wenchuan earthquake.
another key factor in setting up the conditions for the landslide was human-induced deforestation and topsoil erosion, the study found. the results "underscore the urgency for a high priority program of re-vegetation of zhouqu county, without which the region will remain exposed to future
11, progressive bulking type landslides," the author reports.
收听单词发音 
