Dispersion and Intersection of Hydrothermal Plumes in the Manus Back-Arc Basin, Western Pacific

Table 2

Measured compositions of water column samples from the Desmos hydrothermal field.

Station	Sample	Depth (m)	Velocity (m/s)	Turbidity (NTU)	pH 25 °C	Ca (mmol/kg)	Mg (mmol/kg)	K (mmol/kg)	Na (mmol/kg)	Cl (mmol/kg)	SO4^2- (mmol/kg)	Fe (μmol/kg)	Mn (μmol/kg)
D-W09 (3^°42.1464S, 151^°52.494E; depth: 2089 m)
	D-W09-1	1982	0.068	0.106	7.59	9.46	50.8	10.4	461	541	30.2	0.039	0.085
	D-W09-4	1951	0.067	0.085	7.65	9.31	49.8	10.6	479	534	29.6	0.017	0.077
	D-W09-5	1926	0.077	0.089	7.67	9.55	49.9	11.2	475	541	29.5	0.015	0.087
	D-W09-6	1900	0.080	0.084	7.64	9.68	50.9	11.0	481	540	29.7	0.016	0.048
	D-W09-7	1876	0.074	0.089	7.66	9.43	50.7	10.5	484	538	30.1	0.017	0.057
	D-W09-8	1850	0.080	0.091	7.68	9.49	48.6	10.6	458	548	30.8	0.013	0.057
	D-W09-9	1825	0.067	0.069	7.66	9.66	49.9	10.7	463	541	30.9	0.016	0.050
	D-W09-10	1800	0.055	0.085	7.67	9.68	50.2	10.9	460	551	30.4	0.013	0.047
	D-W09-11	1775	0.048	0.056	7.67	9.41	49.5	10.4	469	546	30.5	0.016	0.051
	D-W09-12	1750	0.058	0.051	7.67	9.85	51.8	11.1	490	539	30.6	0.014	0.056
	D-W09-13	1725	0.063	0.053	7.69	9.58	51.3	11.0	492	549	30.3	0.012	0.051
	D-W09-14	1700	0.078	0.049	7.67	9.53	51.0	10.7	477	546	30.9	0.016	0.044
	D-W09-15	1600	0.103	0.101	7.64	9.83	51.7	10.9	480	533	30.1	0.015	0.070
	D-W09-16	1300	0.129	0.046	7.70	9.17	49.6	10.4	472	558	30.5	0.012	0.039
	D-W09-17	1001	0.034	0.041	7.71	9.36	49.9	10.3	468	550	30.8	0.010	0.035
	D-W09-20	800	0.028	0.038	7.73	9.38	50.7	11.1	484	531	30.0	0.024	0.036
	D-W09-21	600	0.077	0.036	7.78	9.26	49.6	10.8	471	541	30.2	0.010	0.037
	D-W09-22	401	0.046	0.042	7.82	9.02	49.9	10.7	471	548	30.7	0.013	0.040
	D-W09-23	200	0.172	0.038	7.97	9.61	50.3	11.1	488	545	30.8	0.017	0.042
	D-W09-24	100	0.172	0.054	8.13	9.28	51.0	10.6	468	538	30.7	0.011	0.039
D-W02 (3^°42.2178S, 151^°52.584E; depth: 1959 m)
	D-W02-1	1949	0.041	0.093	7.64	9.71	51.2	10.9	500	549	29.5	0.023	0.068
	D-W02-4	1926	0.040	0.060	7.65	9.67	50.6	11.0	492	546	29.3	0.025	0.062
	D-W02-5	1900	0.046	0.052	7.63	9.76	51.3	10.8	454	529	29.6	0.022	0.057
	D-W02-6	1875	0.039	0.071	7.66	9.71	51.6	10.6	475	557	29.2	0.022	0.069
	D-W02-7	1850	0.081	0.051	7.64	9.64	50.2	10.5	476	554	29.1	0.021	0.067
	D-W02-8	1825	0.087	0.045	7.69	9.63	50.0	10.2	454	545	29.4	0.017	0.059
	D-W02-9	1800	0.097	0.037	7.67	9.64	50.8	9.7	445	538	29.7	0.066	0.067
	D-W02-10	1775	0.091	0.039	7.72	9.84	50.1	10.3	438	556	29.2	0.018	0.057
	D-W02-11	1751	0.067	0.054	7.65	10.02	50.6	10.4	435	534	29.3	0.023	0.094
	D-W02-12	1725	0.067	0.093	7.64	9.81	50.9	10.3	493	544	30.2	0.018	0.096
	D-W02-13	1700	0.050	0.210	7.67	9.92	51.3	11.3	501	553	29.6	0.053	0.097
	D-W02-14	1600	0.080	0.059	7.64	9.87	51.0	10.6	459	542	29.8	0.020	0.079
	D-W02-15	1501	0.175	0.082	7.66	9.69	51.0	10.2	471	535	29.8	0.014	0.058
	D-W02-16	1300	0.182	0.037	7.64	9.74	51.5	11.1	460	548	30.0	0.019	0.059
	D-W02-17	1004	0.146	0.033	7.66	9.74	52.4	11.1	475	539	29.3	0.013	0.055
	D-W02-20	800	0.156	0.027	7.67	9.40	50.0	10.4	477	550	30.0	0.015	0.049
	D-W02-21	601	0.273	0.029	7.73	9.48	50.4	11.0	483	548	29.4	0.012	0.045
	D-W02-22	400	0.256	0.038	7.80	9.32	49.4	10.2	472	533	29.7	0.014	0.056
	D-W02-23	200	0.280	0.030	7.93	9.62	50.3	10.3	461	553	30.3	0.011	0.059
	D-W02-24	100	0.317	0.050	8.12	9.65	51.2	10.5	484	541	30.3	0.011	0.058
D-W01 (3^°42.2334S, 151^°52.632E; depth: 1912 m)
	D-W01-1	1904		0.130	7.68	9.79	51.8	10.4	479	544	30.0	0.018	0.029
	D-W01-2	1875	0.068	0.139	7.67	9.74	50.6	10.8	485	541	29.8	0.019	0.023
	D-W01-3	1851	0.068	0.241	7.66	9.61	51.3	10.3	483	545	29.4	0.028	0.030
	D-W01-4	1824	0.022	0.325	7.51	9.71	51.9	10.7	443	533	29.7	0.047	0.087
	D-W01-5	1800	0.036	0.223	7.55	9.64	51.6	10.2	485	541	29.5	0.076	0.087
	D-W01-6	1768	0.031	0.251	7.55	9.80	51.6	10.7	511	551	29.7	0.061	0.101
	D-W01-7	1750	0.012	0.167	7.65	9.73	49.9	10.6	488	541	29.7	0.024	0.025
	D-W01-8	1726	0.032	0.360	7.66	9.74	50.6	10.6	475	549	29.9	0.023	0.040
	D-W01-9	1701	0.011	0.077	7.67	9.78	50.9	10.5	477	547	29.7	0.019	0.026
	D-W01-10	1676	0.023	0.040	7.66	9.94	51.2	10.9	492	544	29.7	0.017	0.023
	D-W01-11	1651	0.035	0.297	7.65	9.70	51.3	10.8	495	548	29.6	0.020	0.046
	D-W01-12	1626	0.066	0.313	7.66	9.37	50.4	10.9	486	543	29.6	0.025	0.045
	D-W01-13	1600	0.071	0.076	7.69	9.52	49.3	10.8	480	553	29.6	0.018	0.037
	D-W01-14	1550	0.054	0.063	7.67	9.62	50.7	10.8	490	547	29.4	0.017	0.028
	D-W01-15	1500	0.031	0.076	7.69	9.72	50.6	10.9	505	535	29.8	0.013	0.010
	D-W01-16	1450	0.057	0.063	7.69	9.37	50.2	10.8	487	546	29.8	0.013	0.010
	D-W01-17	1400	0.040	0.042	7.71	9.85	51.2	10.9	503	551	29.2	0.010	0.007
	D-W01-18	1200	0.180	0.030	7.72	9.64	50.8	10.4	479	549	29.6	0.013	0.008
	D-W01-19	1000	0.123	0.031	7.71	9.87	52.1	10.7	502	534	29.4	0.020	0.003
	D-W01-20	800	0.071	0.030	7.71	10.2	51.8	11.5	525	553	28.9	0.017	0.008
	D-W01-21	600	0.081	0.030	7.79	9.75	50.7	10.7	480	546	29.7	0.023	0.003
	D-W01-22	400	0.064	0.031	7.84	9.53	50.7	10.4	485	543	29.7	0.017	0.006
	D-W01-23	188	0.104	0.029	8.04	10.1	52.5	10.9	509	548	30.9	0.016	0.002
	D-W01-24	101	0.095		8.14	10.0	51.6	11.0	502	543	30.7	0.014	0.015
D-W04 (3^°42.2505S, 151^°52.6822E; depth: 1892 m)
	D-W04-1	1840	0.148	0.276	7.51	9.51	49.6	10.5	475	538	30.2	0.084	0.158
	D-W04-4	1825	0.142	0.082	7.61	9.53	50.8	10.9	498	548	30.4	0.030	0.117
	D-W04-5	1800	0.162	0.292	7.57	9.44	50.0	10.7	491	548	29.7	0.050	0.150
	D-W04-6	1775	0.097	0.072	7.61	9.35	51.1	10.5	476	541	28.7	0.034	0.079
	D-W04-7	1750	0.087	0.197	7.60	9.35	50.2	10.5	488	551	30.4	0.047	0.092
	D-W04-8	1725	0.091	0.279	7.61	9.43	51.8	10.6	472	548	29.7	0.044	0.115
	D-W04-9	1700	0.070	0.079	7.66	9.35	50.9	10.4	491	551	29.7	0.026	0.100
	D-W04-10	1675	0.077	0.071	7.62	9.18	50.5	9.9	455	551	29.8	0.016	0.090
	D-W04-11	1650	0.075	0.190	7.66	9.13	50.4	10.5	477	545	29.6	0.017	0.068
	D-W04-12	1625	0.075	0.071	7.62	9.16	49.5	9.8	461	541	30.1	0.014	0.078
	D-W04-13	1600	0.071	0.093	7.64	9.36	50.5	9.9	453	548	29.7	0.014	0.071
	D-W04-14	1550	0.033	0.064	7.66	9.33	50.0	10.0	451	541	29.3	0.015	0.064
	D-W04-15	1500	0.025	0.064	7.70	9.43	49.9	10.2	452	535	29.5	0.014	0.056
	D-W04-16	1300	0.054	0.036	7.67	9.40	50.1	11.3	489	543	29.5	0.011	0.047
	D-W04-17	998	0.116	0.031	7.74	9.81	49.7	10.9	465	543	29.2	0.012	0.050
	D-W04-20	800	0.115	0.025	7.70	9.43	50.5	10.8	486	534	29.2	0.011	0.048
	D-W04-21	601	0.103	0.026	7.73	9.43	49.4	11.0	466	534	29.3	0.011	0.045
	D-W04-22	399	0.086	0.030	7.85	9.59	49.9	10.9	476	548	29.7	0.011	0.045
	D-W04-23	200	0.116	0.029	7.96	9.39	49.8	10.9	463	555	29.9	0.011	0.055
	D-W04-24	100	0.184	0.040	8.11	9.13	50.1	11.3	472	558	29.9	0.012	0.064
Desmos^a					1.23	10.7	48.0	8.70	414	503	89.4	7745	40
Bottom seawater^a					7.80^b	10.5	52.4	9.90	471	540	28.2	0.001	0.005

^aDesmos average vent fluid data and bottom seawater data from Seewald et al. [31]. ^bAverage pH value from Douville et al. [45].