Citation:

S0967-0645(02)00216-3

Name: Particle flux at mooring sites in the Pacific Ocean (Table 1)
Creator: Hodaka Kawahata
Published: 2002
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

In order to understand the vertical transport of particulate matter, suspended and settling particles were collected along a meridional transect between 46°N and 35°S and an equatorial longitudinal transect between 135°E and 175°E in the Pacific. The low COrganic/N atomic ratios (<8.2) of suspended particulate organic matter (OM) and good correlation between particulate organic carbon (OC) and chlorophyll-a confirmed that the suspended particulate OM in the surface water was mainly produced by phytoplankton. Only 0.1–3.2% of primary production was transported to 1.3 km water depth in the boreal central Pacific. All data on settling particles (excluding deep trap data) showed strongly positive correlation between total mass and OM fluxes with high correlation factor of 0.93. Biogenic opal-producing plankton, mainly diatoms were responsible for most of the vertical transport of particulate OM in association with higher COrganic/CCarbonate ratios in the subarctic and equatorial hemipelagic regions in the Pacific. This vertical transport of settling particles potentially works as a sink of CO2. In the transition zone during the May 1993, large difference between PCO2 (<300 µatm) in the surface water and pCO2 (340 µatm) in the atmosphere was actually due to enhanced particulate OM flux. Since the deep water of the Pacific is enriched in CO2 and nutrients, upwelled seawater may tend to release CO2 to the atmosphere. However, higher production of particulate matter could reduce the partial pressure of CO2 in the surface water. Also terrestrial nutrients' inputs in the western equatorial Pacific have potential for the reduction of CO2 in the surface water.

Coverage:

Median Latitude: 8.162212 * Median Longitude: 163.046805 * South-bound Latitude: -35.516667 * West-bound Longitude: 135.025000 * North-bound Latitude: 46.120000 * East-bound Longitude: 177.736670

Date/Time Start: 1991-06-04T00:00:00 * Date/Time End: 1996-04-01T00:00:00

Minimum DEPTH, water: 1161 m * Maximum DEPTH, water: 4743 m

Event(s):

#1_trap (#1) * Latitude: 2.996670 * Longitude: 135.025000 * Date/Time Start: 1991-06-04T00:00:00 * Date/Time End: 1992-04-27T00:00:00 * Elevation: -4413.0 m * Location: Pacific * Method/Device: Trap, sediment (TRAPS)

#2_trap (#2) * Latitude: 4.125000 * Longitude: 136.276660 * Date/Time Start: 1991-06-04T00:00:00 * Date/Time End: 1992-04-15T00:00:00 * Elevation: -4888.0 m * Location: Pacific * Method/Device: Trap, sediment (TRAPS)

#3_trap (#3) * Latitude: 0.003300 * Longitude: 175.161666 * Date/Time Start: 1992-06-01T00:00:00 * Date/Time End: 1993-04-16T00:00:00 * Elevation: -4880.0 m * Location: Pacific * Method/Device: Trap, sediment (TRAPS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Date/Time of event	Date/Time
3	Date/Time of event 2	Date/Time 2
4	Latitude of event	Latitude
5	Longitude of event	Longitude
6	Elevation of event	Elevation	m
7	DEPTH, water	Depth water	m			Geocode
8	Duration, number of days	Duration	days	Kawahata, Hodaka
9	Total mass, flux per day	Tot mass flux	mg/m²/day	Kawahata, Hodaka
10	Calcium carbonate, flux	CaCO3 flux	mg/m²/day	Kawahata, Hodaka
11	Carbon, organic, particulate, flux	POC flux	mg/m²/day	Kawahata, Hodaka
12	Opal, flux	bSiO2 flux	mg/m²/day	Kawahata, Hodaka
13	Lithogenic, flux	Litho flux	mg/m²/day	Kawahata, Hodaka
14	Calcium carbonate, flux of total flux	CaCO3 flux	%	Kawahata, Hodaka
15	Carbon, organic, particulate, flux of total flux	POC flux	%	Kawahata, Hodaka
16	Opal, flux of total flux	bSiO2 flux	%	Kawahata, Hodaka
17	Lithogenic, flux of total flux	Litho flux	%	Kawahata, Hodaka		Corg/N atom
18	Carbon, organic, total/Nitrogen, total ratio	TOC/TN		Kawahata, Hodaka		wt./wt.
19	Biogenic silica, opal/calcium carbonate ratio	bSiO2/CaCO3		Kawahata, Hodaka
20	Carbon, organic/Carbon in carbonate ratio	C org/C-carb		Kawahata, Hodaka
21	Carbon, organic, flux	TOC flux	mg/m²/day	Kawahata, Hodaka	Calculated	OC flux at 100 m depth using equation of Pace et al., (1987)
22	Carbon, organic, flux	TOC flux	mg/m²/day	Kawahata, Hodaka	Calculated	OC flux at 100 m depth using equation of Berger et al. (1987)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

285 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Date/Time	3 Date/Time 2	4 Latitude	5 Longitude	6 Elevation [m]	7 Depth water [m]	8 Duration [days]	9 Tot mass flux [mg/m²/day]	10 CaCO3 flux [mg/m²/day]	11 POC flux [mg/m²/day]	12 bSiO2 flux [mg/m²/day]	13 Litho flux [mg/m²/day]	14 CaCO3 flux [%]	15 POC flux [%]	16 bSiO2 flux [%]	17 Litho flux [%] (Corg/N atom)	18 TOC/TN (wt./wt.)	19 bSiO2/CaCO3	20 C org/C-carb	21 TOC flux [mg/m²/day] (OC flux at 100 m depth using ...)	22 TOC flux [mg/m²/day] (OC flux at 100 m depth using ...)
#8_trap	1993-06-15	1994-04-16	46.1200	175.0317	-5435	1412	304.0	207.7	38.5	14.6	143.4	11.2	18.5	7.0	69.1	5.4	7.5	3.72	1.76	36.4	51.9
#7_trap	1993-06-01	1994-04-09	37.4033	174.9450	-5105	1482	313.0	94.6	41.5	11.6	17.5	24.0	43.8	12.3	18.5	25.4	7.5	0.42	1.29	29.7	42.5
#7_trap	1993-06-01	1994-04-09	37.4033	174.9450	-5105	4588	313.0	71.4	30.1	5.5	14.1	21.7	42.2	7.7	19.7	30.4	7.7	0.47	0.84	26.7	39.7
#5_trap	1993-06-15	1994-06-01	34.4217	177.7367	-3365	1342	304.0	41.1	23.3	5.2	3.7	8.9	56.6	12.7	9.0	21.7	7.8	0.16	1.03	12.6	17.9
#5_trap	1993-06-15	1994-06-01	34.4217	177.7367	-3365	2848	350.0	77.7	42.7	7.7	8.7	18.6	55.0	9.9	11.2	23.9	7.9	0.20	0.83	28.6	42.1
#6_trap	1993-06-15	1994-06-01	30.0017	174.9950	-5390	3873	334.0	47.4	30.2	4.8	4.2	0.8	63.7	10.1	8.9	17.3	8.6	0.14	0.74	21.2	31.4
#4_trap	1992-09-25	1993-04-13	7.9266	175.0067	-5260	1637	29.0	13.2	7.6	2.1	2.5	1.0	57.6	15.9	18.9	7.6	5.9	0.33	1.28	5.7	8.2
#4_trap	1992-09-25	1993-04-13	7.9266	175.0067	-5260	4743	199.5	13.2	7.6	2.1	2.5	1.0	63.8	8.9	22.2	5.1	6.0	0.35	0.64	6.9	10.3
#3_trap	1992-06-01	1993-04-16	0.0033	175.1617	-4880	1357	289.0	40.1	30.2	4.4	3.5	2.0	75.3	11.0	8.7	5.0	5.7	0.12	0.67	10.7	15.3
#3_trap	1992-06-01	1993-04-16	0.0033	175.1617	-4880	4363	319.0	36.2	25.6	2.7	6.3	1.6	70.7	7.5	17.4	4.4	5.6	0.25	0.49	12.8	19.0
#10_trap	1994-10-01	1995-04-16	1.2200	160.5650	-3181	1164	197.0	25.7	16.8	3.5	3.1	2.3	65.3	13.6	12.0	9.0	8.0	0.18	0.96	7.8	11.0
#2_trap	1991-06-04	1992-04-15	4.1250	136.2767	-4888	1769	300.0	95.9	43.4	12.1	31.2	9.2	45.2	12.6	32.5	9.6	8.0	0.72	1.29	34.2	49.5
#2_trap	1991-06-04	1992-04-15	4.1250	136.2767	-4888	4574	330.0	94.9	32.5	10.9	35.2	16.2	34.3	11.5	37.1	17.0	8.4	1.08	1.56	53.1	78.9
#1_trap	1991-06-04	1992-04-27	2.9967	135.0250	-4413	1592	330.0	160.7	71.5	16.8	40.9	31.4	44.5	10.5	25.5	19.5	7.7	0.57	1.09	44.9	64.5
#1_trap	1991-06-04	1992-04-27	2.9967	135.0250	-4413	3902	330.0	155.3	64.2	14.1	40.7	36.3	41.4	9.1	26.2	23.4	7.5	0.63	1.02	62.5	92.7
#11_trap	1995-05-16	1996-04-01	-12.9933	155.9933	-1832	1315	321.0	25.7	19.8	2.7	1.2	2.0	77.1	10.4	4.8	7.7	8.0	0.06	0.63	6.4	9.1
#12_trap	1995-05-16	1996-03-16	-17.7617	154.8250	-2821	1298	245.0	10.9	7.4	1.9	0.5	1.1	67.2	17.5	5.0	10.3	8.0	0.07	1.21	4.6	6.5
#12_trap	1995-05-16	1996-03-16	-17.7617	154.8250	-2821	2304	305.0	8.1	5.9	1.0	0.5	0.8	72.0	12.0	5.9	10.1	8.2	0.08	0.77	3.2	4.7
#13_trap	1995-06-01	1996-03-01	-35.5167	161.0000	-3174	1161	274.0	25.6	16.0	4.5	1.7	3.4	62.2	17.7	6.7	13.3	8.0	0.11	1.32	10.1	14.3