水系连通变异下荆南三口河系水文干旱识别与特征分析

代稳, 吕殿青, 李景保, 王金凤, 赵增友

Identification of hydrologic drought characteristics under water system connectivity variation in river system of three outlets of Jingjiang river

Wen DAI, Dianqing LU, Jingbao LI, Jinfeng WANG, Zengyou ZHAO

表4 水系连通变异后各站点相同单变量重现期下二维和三维的联合重现期和同现重现期

Tab. 4 Two- and three-dimensional joint return period and co-occurrences return period under the same univariate recurrence period for each hydrologic station after river system connectivity variation

水文站点	时间系列	单变量重现期(a)	联合重现期T_o(a)					同现重现期T_a(a)
水文站点	时间系列	单变量重现期(a)	ds	dp	sp	dsp		ds	dp	sp	dsp
新江口	1956-1989	2	1.34	1.34	1.34	1.10		3.95	3.95	3.96	6.04
		5	2.89	2.89	2.88	2.17		18.80	18.80	18.77	47.06
		10	5.40	5.40	5.40	3.86		66.81	66.81	66.99	275.14
	1990-2016	2	1.19	1.19	1.19	0.91		6.27	6.27	6.26	13.55
		5	2.71	2.71	2.70	1.94		33.15		33.15	33.07	134.92
		10	5.21	5.21	5.21	3.61		124.06		124.06	124.11	898.99
沙道观	1956-1989	2	1.45	1.45	1.45	1.26		3.20	3.20	3.20	4.28
		5	3.01	3.01	3.02	2.34		14.49	14.49		14.54	30.24
		10	5.54	5.54	5.55	4.05	50.80	50.80		50.82	169.15
	1990-2016	2	1.23	3.61	3.58	1.50	5.35		5.17	5.16	8.53
		5	2.74	2.74	2.75	1.99	27.71	27.71		27.80	99.84
		10	5.25	5.25	5.25	3.67	103.55	103.56		103.78	658.33
弥陀寺	1956-1989	2	1.35	1.35	1.35	1.12	3.85	3.85	3.86	5.96
		5	2.88	2.88	2.88	2.16	19.05	19.05		19.07	50.67
		10	5.39	5.39	5.39	3.85	69.51	69.51		69.42	313.55
	1990-2016	2	1.17	1.17	1.17	0.89	6.80		6.80	6.80	16.44
		5	2.68	2.68	2.68	1.90	37.46	37.46		37.40	180.87
		10	5.19	5.19	5.18	3.58	142.94	142.94		142.73	1264.12
康家岗	1956-1989	2	1.50	1.50	1.50	1.32	2.99	2.99	2.99	3.87
		5	3.05	3.05	3.05	2.39	13.86	13.86		13.89	28.71
		10	5.57	5.57	5.57	4.08	49.08	49.09		49.11	164.94
	1990-2016	2	1.30	1.30	1.30	1.06	4.36		4.36	4.36	7.46
		5	2.82	2.82	2.81	2.08	22.49	22.48		22.40	69.71
		10	5.24	5.24	5.26	3.67	101.39	101.40		101.95	696.56
管家铺	1956-1989	2	1.29	1.29	1.29	1.05	4.45	4.45	4.44	7.91
		5	2.80	2.80	2.80	2.06	23.63	23.63		23.53	79.52
		10	5.30	5.30	5.30	3.73	88.50	88.50		88.49	531.82
	1990-2016	2	1.15	1.15	1.15	0.86	7.80		7.80	7.81	22.25
		5	2.65	2.65	2.65	1.87	44.70	44.71		44.55	270.38
		10	5.15	5.15	5.15	3.53	172.38	172.38		172.56	1960.93