Particle flux at mooring sites in the Pacific Ocean (Table 1)
Cobertura |
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 |
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Data(s) |
09/04/2002
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Resumo |
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. |
Formato |
text/tab-separated-values, 285 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.93432 doi:10.1594/PANGAEA.93432 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Kawahata, Hodaka (2002): Suspended and settling particles in the Pacific. Deep Sea Research Part II: Topical Studies in Oceanography, 49(24-25), 5647-5664, doi:10.1016/S0967-0645(02)00216-3 |
Palavras-Chave | ##1; #1_trap; #10; #10_trap; #11; #11_trap; #12; #12_trap; #13; #13_trap; #2; #2_trap; #3; #3_trap; #4; #4_trap; #5; #5_trap; #6; #6_trap; #7; #7_trap; #8; #8_trap; Biogenic silica, opal/calcium carbonate ratio; Calcium carbonate flux; Calcium carbonate flux of total flux; Calculated; Carbon, organic, particulate flux of total flux; Carbon, organic, particulate flux per day; Carbon, organic/Carbon in carbonate ratio; Carbon, organic flux; Carbon, organic total/Nitrogen, total; Date/Time of event; Date/Time of event 2; DEPTH, water; Duration, number of days; Elevation of event; Event label; Latitude of event; Lithogenic flux of total flux; Lithogenic flux per day; Longitude of event; North Pacific; Opal flux; Opal flux of total flux; Pacific; Southwest Pacific; Total mass flux per day; Trap, sediment; TRAPS |
Tipo |
Dataset |