摘要
关中渭河流域与泾河流域，唐代早、晚期是洪水少发期，中期是洪水多发期，其中以中度涝灾和轻度涝灾为主，大涝灾次之，特大涝灾较少。洪灾频次和等级表明，唐代该地区气候明显分为3个阶段，早期阶段和晚期阶段降水量较少，中期阶段降水量较多。在公元750—769年出现了降水显著增多的湿润气候。根据关中现代大洪水发生的降水量初步确定，唐代特大洪水发生时的年平均降水量为900-1000mm，大洪水的发生也代表了年降水量的明显增加。
In the 74 and 82 flood disasters occurred in Weihe and Jinghe watershed in Tang Dynasty, moderate flood disasters and mild disasters are mainly, secondly are big flood disasters, catastrophic flood disasters are less. The flood disasters are concentrated in the middle period of the Tang Dynasty, which shows that the climate can be divided into three stages in the two areas, the early and late stage was less in precipitation, and the middle stage was more in precipitation. According to the duration and annual precipitation in Guanzhong Plain in 2003, the average annual rainfall mostly was 900 - 1000mm during the period of catastrophic disaster occurred in the Tang Dynasty. The big flood represented a significant increase in precipitation.
出处
《自然灾害学报》
CSCD
北大核心
2009年第2期50-55,共6页
Journal of Natural Disasters
基金
国家自然科学基金项目(40571004)
教育部人文社会科学研究基地重大招标项目(05JJD770014)
作者简介
赵景波（1953-），男，教授，博士，博士生导师，主要从事第四纪研究．E—mail：zhaojb@8nnu．edu．cn
