Particulate organic carbon in the deep-water region of the Gulf of Mexico

被引:2
作者
Contreras-Pacheco, Yessica Vanessa [1 ]
Herzka, Sharon Z. [1 ]
Vallejo-Espinosa, Gerardo [2 ]
Herguera, Juan Carlos [1 ]
机构
[1] Ctr Sci Res & Higher Educ Ensenada CICESE, Div Oceanog, Ensenada, Mexico
[2] Univ Guadalajara UdG, Dept Engn, Mat Water & Energy Res Lab, Tepatitlan de Morelos, Mexico
关键词
Gulf of Mexico; POC (particulate organic carbon); mesoscale structures; ocean eddies; upper layer; MIXED-LAYER DEPTH; LOOP CURRENT; MESOSCALE EDDIES; INTERANNUAL VARIABILITY; MISSISSIPPI RIVER; CHLOROPHYLL; OCEAN; FLUX; TRANSPORT; EDDY;
D O I
10.3389/fmars.2023.1095212
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ocean eddies play a major role in lateral and vertical mixing processes of particulate organic carbon (POC), as well as in the transport of heat, salinity, and biogeochemical tracers. In the open waters of the Gulf of Mexico (GoM), however, there are limited observations to characterize how these mesoscale structures affect the spatial distribution of POC in the upper water column, which is important for organic matter cycling and export. We present the distribution patterns of POC relative to mesoscale features throughout the water column in the deep-water region of the GoM during three oceanographic cruises held during the summer months of 2015, 2016, and 2017. Samples were collected under well-stratified upper ocean conditions, which allowed us to assess the spatial and temporal distribution of POC as a function of non-steric sea surface height, density, apparent oxygen utilization, and chlorophyll fluorescence. We further explored the variability of integrated surface layer POC concentrations at stations located within the cores and the edges of cyclonic and anticyclonic eddies, and those collected outside these structures. Although our results indicate mesoscale eddies modulate several important physical and biogeochemical variables and POC concentrations in the upper ocean, these features do not fully explain the spatial distribution of POC concentrations throughout the deep-water region of the GoM. Relatively lower POC concentrations were observed in the border of the cyclonic and the center of the anticyclonic eddies, in contrast to the relatively higher POC concentrations at the center of the cyclonic and the border of anticyclonic eddies. We observed high variability in POC concentration variability outside mesoscale structures, which may be attributed to other processes such as upwelling over the shelves, and the contribution by rivers during the summer especially in the northern and southern GoM.
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页数:16
相关论文
共 92 条
  • [1] Effect of Caribbean Water incursion into the Gulf of Mexico derived from absolute dynamic topography, satellite data, and remotely sensed chlorophyll a
    Antonio Delgado, Juan
    Sudre, Joel
    Tanahara, Sorayda
    Montes, Ivonne
    Martin Hernandez-Ayon, Jose
    Zirino, Albert
    [J]. OCEAN SCIENCE, 2019, 15 (06) : 1561 - 1578
  • [2] A new, mechanistic model for organic carbon fluxes in the ocean based on the quantitative association of POC with ballast minerals
    Armstrong, RA
    Lee, C
    Hedges, JI
    Honjo, S
    Wakeham, SG
    [J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, 2001, 49 (1-3) : 219 - 236
  • [3] Aviso+ Altimetry, 2022, MESOSCALE EDDY TRAJE, DOI [10.24400/527896/a01-2022.005.220209, DOI 10.24400/527896/A01-2022.005.220209]
  • [4] Fronts and eddies as key structures in the habitat of marine fish larvae: opportunity, adaptive response and competitive advantage
    Bakun, Andrew
    [J]. SCIENTIA MARINA, 2006, 70 : 105 - 122
  • [5] Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean
    Balch, William M.
    Bowler, Bruce C.
    Drapeau, David T.
    Lubelczyk, Laura C.
    Lyczkowski, Emily
    [J]. GLOBAL BIOGEOCHEMICAL CYCLES, 2018, 32 (01) : 2 - 17
  • [6] Sources and transport of land-derived particulate and dissolved organic matter in the Gulf of Mexico (Texas shelf/slope): The use of lignin-phenols and loliolides as biomarkers
    Bianchi, TS
    Lambert, CD
    Santschi, PH
    Guo, LD
    [J]. ORGANIC GEOCHEMISTRY, 1997, 27 (1-2) : 65 - 78
  • [7] Influence of a cyclonic eddy on microheterotroph biomass and carbon export in the lee of Hawaii
    Bidigare, RR
    Benitez-Nelson, C
    Leonard, CL
    Quay, PD
    Parsons, ML
    Foley, DG
    Seki, MP
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2003, 30 (06)
  • [8] Biggs D.C., 1988, Proceedings of the Ocean Drilling Program Initial Report, V113, P77, DOI DOI 10.2973/ODP.PROC.IR.113.105.1988
  • [9] NUTRIENTS, PLANKTON, AND PRODUCTIVITY IN A WARM-CORE RING IN THE WESTERN GULF OF MEXICO
    BIGGS, DC
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1992, 97 (C2) : 2143 - 2154
  • [10] Particulate Organic Carbon in the Tropical Usumacinta River, Southeast Mexico: Concentration, Flux, and Sources
    Cuevas-Lara, Daniel
    Alcocer, Javier
    Cortes-Guzman, Daniela
    Soria-Reinoso, Ismael F.
    Garcia-Oliva, Felipe
    Sanchez-Carrillo, Salvador
    Oseguera, Luis A.
    [J]. WATER, 2021, 13 (11)