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中文摘要: 通过对1997年8月13日特大暴雨过程的分析，揭示了暴雨发生前环境场各类物理量分布特征，发现物理量的强梯度带对暴雨的发生发展起了十分重要的作用，而且物理量强梯度带的形成、加强和移动为暴雨落区预报提供了依据。
中文关键词: 特大暴雨，低涡切变，物理量强梯度带
Abstract:The process of heavy torrentail rain in 13 August 1997 was analysed. The results revealed various features of enviromental physics field before heavy torrential rain appearance. It is found that the strong gradient of physics field has an important effect both on the occurrence and the development of heavy torrential rain,it also provides the evidence to the forecasts of the rainfall area about the formation,the development and the movement of the strong gradient belt of physics field.
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引用文本：
李法然,朱红,1998.一次西南低涡引起的杭嘉湖地区特大暴雨分析[J].气象,24(9):21-25.
,1998.An Analysis of Heavy Torrential Rain Generated by Southwest China Vortex in Hangjahu Area[J].Meteor Mon,24(9):21-25.
李法然,朱红,1998.一次西南低涡引起的杭嘉湖地区特大暴雨分析[J].气象,24(9):21-25.
,1998.An Analysis of Heavy Torrential Rain Generated by Southwest China Vortex in Hangjahu Area[J].Meteor Mon,24(9):21-25.