摘要
从古至今,嘉陵江流域地质灾害频发,严重威胁人们的生产生活安全。通过对历史文献及地方史志的整理分析,运用小波分析法,对明清时期嘉陵江上游地质灾害发生的频次、等级、周期性、成因等进行了定量分析。结果表明:记载的明清时期嘉陵江上游地质灾害共246次,其中59.35%为小型灾害,24.80%为中型灾害,15.85%为大型灾害;总体有3个较明显的周期变化规律,分别是3~9 a、10~23 a和25~32 a,其中在10~23 a的准3次震荡最为显著;地质灾害的空间分布明显不均匀,甘肃省内发生的频率最高,这与嘉陵江上游在甘肃省内的面积最大有关。
From ancient times to the present,the geological disaster in Jialing River basin frequently occurred,and that seriously threatens the people′s life.Through the analysis of historical literature and local history,the frequency,grade,periodicity and causes of geological disasters in the upper reaches of Jialing River were analyzed quantitatively by using wavelet analysis methods.The results showed that there were 246 geological disasters recorded in the upper reaches of Jialing River in Ming and Qing dynasties.Among them,59.35%disasters were small,24.80%were medium-sized and 15.85%were large-scale.On the whole,there were three obvious periodic changes including 3~9 a,10~23 a and 25~32 a.Among them,the 3 quasi shocks in 10~23 a were the most significant.The spatial distribution was obviously uneven,and the frequency occurred in Gansu province was the highest,which maybe due to the fact that the largest area in the upper reaches of Jialing River belongs to Gansu province.
作者
陈婉莹
田毅
王尚义
CHEN Wanying;TIAN Yi;WANG Shangyi(School of Geographical Sciences,Taiyuan Normal University,Jinzhong 030619,China;Department of History,Taiyuan Normal University,Jinzhong 030619,China)
出处
《海南师范大学学报（自然科学版）》
CAS
2022年第4期452-460,共9页
Journal of Hainan Normal University（Natural Science）
基金
山西省高等学校哲学社会科学项目(2020w131)。
关键词
明清时期
嘉陵江上游
地质灾害
小波分析法
Ming and Qing dynasties
upper reaches of Jialing River
geological disasters
wavelet analysis
