Doctoral theses
Current Record: 207 of 229
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Identifier |
000029910 |
Title |
Μελέτη του βιογεωχημικού κύκλου βιογενών και ανθρωπογενών οργανικών ενώσεων στο θαλάσσιο περιβάλλον της βορειοανατολικής Μεσογείου |
Author
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Γώγου, Αλεξάνδρα
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Thesis advisor
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Στεφάνου, Ευριπίδης
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Abstract |
The biogeochemical cycle of organic matter in the Northeastern Mediterranean Sea was studied by using the organic molecular marker (OMM) approach. Aliphatic and polyaromatic hydrocarbons, n-alkanals, n-alkan-2-ones, and aliphatic acids, and atmospheric backward trajectories have been conjointly used to reconcile organic aerosols transferred from continental Europe and North Africa with their emission sources. The study of the OMM, derived from terrestial higher plants and anthropogenic sources, in parallel with OMM of marine origin (steroidal alcohols, long-chain alkenones, diols, keto-ols and isoprenoids) in the sea-water sinking material, provided information concerning the impact of allochthonous organic matter inputs into the marine environment. The role of autochthonous productivity for the organic matter transport to higher water column depths was also highlighted. Finally, the study of OMM in the sea sediments, the ultimate sink in the marine environment, indicated that in oligotrophic marine seas, the contribution of terrestrial organic matter can contribute significantly to the mass balance of the organic carbon in its biogeochemical cycle. The significant qualitative and quantitative correlation of the atmospheric, sea-water sinking material and sediment accumulation fluxes, indicated that the atmospheric deposition is the main route for the transport of terrestrial organic matter in the open Northeastern Mediterranean Sea.
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Physical description |
v, 282 σ. : εικ. ; 30 εκ. |
Language |
Greek |
Issue date |
1998-06-30 |
Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Doctoral theses
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Type of Work--Doctoral theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/9/8/9/metadata-dlib-c05afff1d3bf4700f055b2928a220c14_1283499443.tkl
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Views |
298 |
Digital Documents
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