- 107 - 02257 - 7 - Biogeochemical Dynamics at Major River - Coastal Interfaces : Linkages with Global Change
نویسنده
چکیده
Amazon, 21, 24, 378–379 overbank, crevasses processes, 25 physical and biogeochemical processes, 92 plume dispersals, 55 sediment accumulation rates, 91 subaqueous delta clinoform system, 91–96 tidal-regime changes, sediment dynamics model, 92–94 Arctic Ocean, riverine organic and inorganic carbon fluxes, processing, fate acids to aldehydes ratios, 534–535 aragonite undersaturation, 542–543 Arctic riverine DIC during transport, sources and fluxes, 538–543 Arctic riverine organic matter exported to coastal systems sources, composition, fluxes, 533–538 Arctic riverine tPOC, tDOC fluxes, 533–534 Arctic rivers, hydrology and fluxes vs. global rivers, 530–532 CaCO3 concentration, 542 CDOM absorption, DOC concentration, total lignin concentrations, 535–537 dissolved inorganic C system, six largest Arctic rivers, seasonal variation, 539 flow weighted DOC concentrations for the five largest Arctic rivers, 543–544 freshwater discharge patterns, six biggest Arctic rivers, 530–533 HCO3 concentration, 539–542 optical measurements vs. catchment area-normalized daily discharge, six largest Arctic rivers, 535–537 overview, 530, 546 pCO2 values, 539–541 riverine DOM fate, degradation, transport, constraining flux models, 544–546 riverine OM utilizing abundance 14C and 13C, sources and cycling, 543–544 six biggest Arctic rivers, catchments, 530, 533, 539 tDOC degradation, 545–546 tDOM, tPOM biomarker compositions, 534–535 tDOM optical properties, 535–538 black carbon (BC) atmospheric BC, 204–205 BC, 214–218 defined, 200 degradation, 222–224 dissolved, 206–207 fate of, 220–224 global cycling of, 224 global pyrogenic PAH discharge vs., 218–220 isolation, dissolved phase, 210–213 isolation, quantification, source discrimination, 207–214 in large river systems, 214–220 overview, 200–202 quantification, chemical and thermal methods, 209–210 quantification, visual methods, 209 soil, 205–206 source discrimination, 213–214 sources, 200–208 storage BC in ocean, 220–222
منابع مشابه
Colored dissolved organic matter dynamics and anthropogenic influences in a major transboundary river and its coastal wetland
Most transboundary rivers and their wetlands are subject to considerable anthropogenic pressures associated with multiple and often conflicting uses. In the Eastern Mediterranean such systems are also particularly vulnerable to climate change, posing additional challenges for integrated water resources management. Comprehensive measurements of the optical signature of colored dissolved organic ...
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High-resolution underway measurements of surface water pH, CO2 fugacity (fCO2), and total dissolved inorganic carbon (DIC), along with discrete bottle sample analyses from depths, were obtained in July 2005 and September 2006 in the Mississippi River Plume (MRP) and the Orinoco River Plume (MRP). The resulting data were analyzed to compare and contrast the CO2 fluxes and carbonate system behavi...
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Shelf and coastal seas are regions of exceptionally high biological productivity, high rates of biogeochemical cycling and immense socio-economic importance. They are, however, poorly represented by the present generation of Earth system models, both in terms of resolution and process representation. Hence, these models cannot be used to elucidate the role of the coastal ocean in global biogeoc...
متن کاملNutrients and carbon fluxes in the estuaries of major rivers flowing into the tropical Atlantic
*Correspondence: Moacyr Araujo, Department of Oceanography DOCEAN, Federal University of Pernambuco, Av. Arquitetura, s/n, Cidade Universitária, Recife, PE 50740-550, Brazil e-mail: [email protected] Knowledge of the seasonal variability of river discharge and the concentration of nutrients in the estuary waters of large rivers flowing into the tropical Atlantic contributes to a better understanding ...
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Terrestrial inputs (natural and anthropogenic) from rivers, the atmosphere and physical processes strongly impact the functioning of coastal pelagic ecosystems. The objective of this study was to develop a tool for the examination of these impacts on the Marseille coastal area, which experiences inputs from the Rhone River and high rates of atmospheric deposition. Therefore, a new 3D coupled ph...
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