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Kawahata, Hodaka (2002): Particle flux at mooring sites in the Pacific Ocean (Table 1). PANGAEA,, Supplement to: Kawahata, H (2002): Suspended and settling particles in the Pacific. Deep Sea Research Part II: Topical Studies in Oceanography, 49(24-25), 5647-5664,

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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.
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
#10_trap (#10) * Latitude: 1.220000 * Longitude: 160.565000 * Date/Time Start: 1994-10-01T00:00:00 * Date/Time End: 1995-04-16T00:00:00 * Elevation: -3181.0 m * Location: Pacific * Method/Device: Trap, sediment (TRAPS)
#11_trap (#11) * Latitude: -12.993330 * Longitude: 155.993330 * Date/Time Start: 1995-05-16T00:00:00 * Date/Time End: 1996-04-01T00:00:00 * Elevation: -1832.0 m * Location: Southwest Pacific * Method/Device: Trap, sediment (TRAPS)
#12_trap (#12) * Latitude: -17.761666 * Longitude: 154.825000 * Date/Time Start: 1995-05-16T00:00:00 * Date/Time End: 1996-03-16T00:00:00 * Elevation: -2821.0 m * Location: Southwest Pacific * Method/Device: Trap, sediment (TRAPS)
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Date/Time of eventDate/Time
3Date/Time of event 2Date/Time 2
4Latitude of eventLatitude
5Longitude of eventLongitude
6Elevation of eventElevationm
7DEPTH, waterDepth watermGeocode
8Duration, number of daysDurationdaysKawahata, Hodaka
9Total mass flux per dayMass fluxmg/m2/dayKawahata, Hodaka
10Calcium carbonate fluxCaCO3 fluxmg/m2/dayKawahata, Hodaka
11Carbon, organic, particulate fluxPOC fluxmg/m2/dayKawahata, Hodaka
12Opal fluxbSiO2 fluxmg/m2/dayKawahata, Hodaka
13Lithogenic fluxLitho fluxmg/m2/dayKawahata, Hodaka
14Calcium carbonate flux of total fluxCaCO3 flux%Kawahata, Hodaka
15Carbon, organic, particulate flux of total fluxPOC flux%Kawahata, Hodaka
16Opal flux of total fluxbSiO2 flux%Kawahata, Hodaka
17Lithogenic flux of total fluxLitho flux%Kawahata, HodakaCorg/N atom
18Carbon, organic, total/Nitrogen, total ratioTOC/TNKawahata, Hodakawt./wt.
19Biogenic silica, opal/calcium carbonate ratiobSiO2/CaCO3Kawahata, Hodaka
20Carbon, organic/Carbon in carbonate ratioC org/C-carbKawahata, Hodaka
21Carbon, organic fluxTOC fluxmg/m2/dayKawahata, HodakaCalculatedOC flux at 100 m depth using equation of Pace et al., (1987)
22Carbon, organic fluxTOC fluxmg/m2/dayKawahata, HodakaCalculatedOC flux at 100 m depth using equation of Berger et al. (1987)
285 data points

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