南昌工程学院学报2025，Vol.44Issue(1)：14-20,7.
近62年赣江流域汛期暴雨中心时空特征研究
Spatiotemporal characteristics of rainstorm centers during flood season in Ganjiang Basin during recent 62 years
摘要
Abstract
In order to study the temporal and spatial characteristics of rainstorm center in Ganjiang Basin in flood season,the rainfall data from 36 rainfall stations in Ganjiang Basin during 1957-2018 were extracted from April to September in flood season,and the linear trend,Mann-Kendall trend test,Morlet wavelet analysis,IDW interpolation and other methods were used in the study.The results show that the rainstorm center has formed in the flood season of Ganjiang Basin every year during recent 62 years,and its temporal and spatial characteristics are as follows:In terms of migration characteristics,the rainstorm center migrated eastward at a rate of 4.57 km/10a and northward at a rate of 4.03 km/10a,and the first main cy-cle of the rainstorm center migrated in both east-west and north-south directions was 34 years.In terms of rainfall character-istics,the annual rainstorm volume at the rainstorm center was 617.90 mm,and the annual rainstorm volume increased at a rate of 3.7 mm/10a.The annual rainstorm volume at the rainstorm center area was 582.97 mm,and the annual rainstorm volume increased at a rate of 3.8 mm/10a.The first main cycle of the rainstorm volume at the rainstorm center and the rain-storm center area was 34 a.In terms of spatial characteristics,the rainstorm centers are widely distributed in the upper,mid-dle and lower reaches of the basin.The rainstorm centers are the most frequent in the lower reaches,followed by the upper reaches,and the least in the middle reaches.The rainstorm centers mainly occur in the northeast of the upper reaches,the northeast of the middle reaches,the northeast of the lower reaches,the east of the lower reaches and the northwest of the low-er reaches.关键词
赣江流域/暴雨中心/时间特征/空间特征Key words
Ganjiang Basin/rainstorm center/temporal characteristics/spatial characteristics分类
环境科学引用本文复制引用
刘惠英,李益朋,徐胜攀,陈新如..近62年赣江流域汛期暴雨中心时空特征研究[J].南昌工程学院学报,2025,44(1):14-20,7.基金项目
南昌工程学院博士科研启动项目(2023kyqd004) （2023kyqd004）
国家自然科学基金资助项目(41761058) （41761058）
