-
Abstract:
Twelve very heavy rainstorms that caused severe floods in Pearl River drainage basin from 1949 to 1994 are analyzed here. It is found that the rainstorms can be divided into three kinds. and they have different characteristics in circulation and physical quantities. Rainstorms that caused floods in the Xijiang River and Beijiang River usually happen during the first flood season of the year(Apr.-Jun.). They last long. cover large areas and cause severe disasters. There are Stable circulation backgrounds and complete tyontal precipitation systems, and large stratification instability fields. Rainstorms often cause floods in coastal rivers and small tributaries during the second floods season(Jul.-Sept.). They happen suddenly, last a short time but have strong raillfail intensity. They are always caused by tropical cyclones but show significant instability only in rainstorm fields.The characteristics of rainstorms causing floods in the Dongjiang River or other main tributaries are similar to the two above. That is, they may be connected with fronts or tropical cyclones, and its stability degree is between the preceding two kinds.
-
References
|
[1]
|
BAO Cheng-Lan, WANG De-han, et al., 1981.The analysis and prediction of rainstorms(in Chinese)[M].Beijing: Agricultural Press, 1-189,243-267. |
|
[2]
|
Edit group of rainstorms in North China, 1992. Rainstorms in North China(in Chinese)[M]. Beijing: Meteoro-logical Press, 1-182. |
|
[3]
|
Guangdong Command Post of Anti-floods, Anti-droughts and Anti-winds, Guangdong Hydrological Bureau. 1997. The floods, droughts and winds in Guangdong(in Chinese)[M]. Guangzhou:.linan University Press. 80-116. |
|
[4]
|
HUANG Shi-song, 1986. Rainstorms in the first flood season in South China(in Chinese)[M]. Guangzhou: Guangdong Scientific and Technological Press, 7-233. |
|
[5]
|
LIANG Bi-qi, 1990. Course of synoptic meteorology(in Chinese)[M]. Beijing: Meteorological Press. 536-585. |
|
[6]
|
LIANG Bi-qi,1993. Natural disasters in Guangdong(in Chinese)[M]. Guangzhou: Guangdong People's Press. 171-175. |
|
[7]
|
TAU Shi-yan. 1980. Rainstorms in China(in Chinese)[M]. Beijing: Scientific press, 1-225. |
|
[8]
|
Technical group of conference, 1996. Papers on the Very Heavy Rainstorms and Floods in South China in 1994 conference(in Chinese)[M]. Beijing: Meteorological press, 1-272. |
|
[9]
|
Technical group of rainstorms of Changjiang valley research cooperative, 1982. Papers on rainstorms of the Changjiang River Valley(in Chinese)[M]. Beijing: Meteorological Press, 1-208. |
|
[10]
|
WANG De-han, WU Bao-jun, WEI Tong jian, et al., 1985. The calculation of some physical quantities in analysis of rainstorms(in Chinese)[M]. Beijing: Meteorological Press, 3-167. |
|
[11]
|
ZHANG Bing-chen, 1980. Research on Meiyu front rainstorms in middle and lower course of the Changjiang River(in Chinese)[M]. Beijing: Meteorological Press, 7-269. |
|
[12]
|
ZHANG Yan, 1990. Rainstorms prediction(in Chinese)[M]. Beijing: Meteorological Press. 27-87. |
-
-
-
粤公网安备 4401069904700002号
DownLoad: