四川省山洪灾害时空分布规律及其影响因素研究

熊俊楠, 赵云亮, 程维明, 郭良, 王楠, 李伟

Temporal-spatial Distribution and the Influencing Factors of Mountain-Flood Disasters in Sichuan Province

XIONG Junnan,ZHAO Yunliang,CHENG Weiming,GUO Liang,WANG Nan,LI Wei

表2 历史山洪灾害点重心及标准差椭圆参数变化

Tab.2 Variation of gravity center and standard deviation of elliptical parameters in historical mountain-flood disaster

5月 6月 7月 8月 9月 (x,y) (104°28'E 29°40'N) (103°59'E 30°00'N) (103°56'E 29°53'N) (103°37'E 29°46'N) (105°00'E 30°49'N) S/km 0 58.187 14.495 32.020 174.55 R/° 48.450 31.187 46.040 34.488 53.282 X(std/km) 239.183 225.783 335.372 284.142 251.181 Y(std/km) 204.515 183.707 181.039 183.186 127.615