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受娜尼拉现象的影响 ,1 999-1 2 -1 5～ 1 6委内瑞拉北部阿维拉山区加勒比海沿岸的 8个州连降特大暴雨 ,造成山体大面积滑塌 ,数十条沟谷同时暴发大规模的泥石流。泥石流造成 3万人死亡 ,经济损失高达1 0 0亿美元 ,成为本世纪最严重的泥石流灾害。这次泥石流灾害具有群发性、规模大、低频率和直接入海等特点 ,对这类泥石流进行泥石流成因、活动规律、预测预报、泥石流与异常气候现象关系和直接入海型泥石流运动规律、沉积特征、对海水的污染扩散过程以及防治对策的研究具有重要意义
Affected by the phenomenon of Nanilila, a total rainfall of 899-1805-160 in the eight states along the Caribbean coast in the Avila mountains of northern Venezuela resulted in massive landslides in the mountains and the simultaneous outbreak of dozens of valleys Large-scale debris flow. Debris flow caused 30,000 deaths and economic losses of up to 10 billion U.S. dollars, making it the worst debris flow disaster of this century. This debris flow disaster is characterized by its mass, large scale, low frequency and direct sea entry. The causes of debris flow, activity rules, forecasting and prediction, the relationship between debris flow and anomalous climatic phenomena and the law of direct debris flow movement, depositional characteristics, It is of great significance to study the process of pollution diffusion and prevention and control of seawater