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dc.contributor.authorNaqvi, S.W.A.
dc.contributor.authorUnnikrishnan, A.S.
dc.date.accessioned2010-01-27T12:29:40Z
dc.date.available2010-01-27T12:29:40Z
dc.date.issued2009
dc.identifier.citationIn "Surface ocean - Lower atmosphere processes. eds. by: Le Quere, C.; Saltzman, E.S.", 233-250p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3539
dc.description.abstractThe coastal ocean accounts for only 7% of the total oceanic area, but it plays a very important role in biogeochemical cycles. It not only exchanges energy and matter with the open ocean, but terrestrial inputs of materials such as freshwater, sediments, dissolved/particulate nutrients and organic matter by surface runoff and groundwater flow have to pass through it. The processing of these materials in shallow waters is markedly different from that in the open ocean, and the contribution of the former to biogeochemical fluxes is disproportionately large (15% of oceanic primary production, 80% of organic burial, 50% of calcium carbonate deposition, 90% of sedimentary mineralization, and 75-90% of oceanic sink of suspended material carried by rivers). About 90% of the marine fish catch comes from the shallow seas whose overall economic value is estimated to be >40% of the world’s ecosystem services and natural capital. Finally, as much as 40% of the world’s population lives within 100 km of the coastlines, making the coastal ocean extremely vulnerable to anthropogenic impingement. This chapter first provides an overview of physical processes that differentiate coastal and openocean regions. It then focuses on selected biogeochemical processes that are of relevance to Surface Ocean–Lower Atmosphere Study, and how they are being affected by human activities
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.rightsCopyright [2009] AGU. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjecthydrography
dc.subjectbiogeochemistry
dc.subjectbiogeochemical cycle
dc.subjectorganic matter
dc.titleHydrography and biogeochemistry of the coastal ocean
dc.typeBook Chapter


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