表4.2 97-99年南沙声阻抗(Z)
1997年南沙	Z	1998年南沙	Z	1999年南沙	Z
11-12月航次	(g/cm2.s.105)	5-6月航次	(g/cm2.s.105)	4-5月航次	(g/cm2.s.105)
1997-11-3	1.902	1998-5-1	2.126	1999-4-18	1.813
1997-11-5	1.806	1998-5-2	1.988	1999-4-19	1.854
1997-11-7	1.943	1998-5-3	2.576	1999-4-20	1.846
1997-11-10	1.982	1998-5-5	2.491	1999-4-21	1.867
1997-11-12	1.751	1998-5-6	2.723	1999-4-22	1.778
1997-11-13	1.752	1998-5-8	2.686	1999-4-23	1.823
1997-11-16	1.486	1998-5-9	2.483	1999-4-24	1.814
1997-11-19	1.597	1998-5-10	2.511	1999-4-25	2.050
1997-11-23	1.701	1998-5-12	2.075	1999-4-26	1.740
1997-11-25	1.892	1998-5-13	2.617	1999-4-27	1.793
1997-11-27	2.236	1998-5-14	2.195	1999-4-28	1.812
1997-11-29	1.808	1998-5-15	2.297	1999-4-29	1.538
1997-11-30	1.942	1998-5-17	1.997	1999-4-30	1.795
1997-11-33	1.831	1998-5-18	1.903	1999-4-31	1.771
1997-11-37	1.799	1998-5-19	2.043	1999-4-32	1.698
1997-11-38	1.777	1998-5-20	1.986	1999-4-34	1.786
1997-11-40	1.841	1998-5-21	1.939	1999-4-36	1.702
1997-11-43	2.116	1998-5-22	1.847	1999-4-37	1.934
1997-11-56	1.793	1998-5-25	2.621	1999-4-38	1.846
1997-11-65	1.972			1999-4-39	1.755
				1999-4-40	1.819
中国科学院南海海洋研究所                卢博、黄韶健、李赶先、张福生整理  2000年9月