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Modeliranje hidrodinamike in transporta živosrebrnih spojin v Tržaškem zalivu : doktorska disertacijaŠirca, AndrejZbrani in tolmačeni so obsežni viri podatkov o vetrovih, morskih tokovih in sedimentaciji v Tržaškem zalivu ter o hidrologiji in transportu lebdečih plavin v Soči in Idrijci. Z matematičnima modeloma ... LMTe2D in MIKE 21 je obdelan vpliv vetra, plime in izliva Soče na tokove v zalivu in na širjenje polutantov iz Soče. Predlagani sta dve novi metodi za opis vetra v dolgoročnih, prognostičnih hidrodinamičnih (HD) in advekcijsko-disperzijskih (AD) modelih. Z modelom MIKE 21 je obdelano tudi usedanje lebdečih plavin iz Soče v zalivu. Opisani so osnovni procesi pretvorb živega srebra v vodnih okoljih in zbrane ter tolmačene razpoložljive meritve živega srebra v vodi, sedimentu in bioti Tržaškega zaliva, Soče in Idrijce. Na podlagi teh podatkov je bila za zaliv izdelana letna bilanca dotokov in odtokov živega srebra. Vse omenjene komponente so vhodni podatki za dvodimenzionalni, globinsko povprečni, matematični model transporta in pretvorb živosrebrnih spojin v morskem okolju, STAT-RIM. Ta obravnava transport nemetiliranega živega srebra (HfII) in metil-živega srebra (MeHg) ter procese metilacije, redukcije in demetilacije. Posebna pozornost je posvečena določitvi koeficientov teh reakcij in porazdelitvenih koeficientov. Slednji omogočajo, da račun poteka le z dvema Ad enačbama, delitev in raztopljeni, partikularni in planktonski del hHgII in MeHg pa se izvede le po potrebi, kar pomeni velik prihranek računskega časa. S temi simulacijami je prikazana verifikacija modela STATRIM,pri čemer uporabimo starejše rezultate meritev iz literature in meritev iz let 1995 in 1996. Dokazano je ujemanje računskih in merjenih vrednosti v okviru istega reda velikosti, kar je bila v prvi fazi modela načrtovana točnost.Type of material - dissertation ; adult, seriousPublication and manufacture - Ljubljana : [A. Širca], 1996Language - slovenianCOBISS.SI-ID - 81761
Author
Širca, Andrej
Other authors
Rajar, Rudolf |
Četina, Matjaž
Topics
Onesnaževanje okolja |
Živo srebro |
Tržaški zaliv |
Disertacije |
onesnaževanje voda |
matematični modeli |
hidrodinamika |
Jadransko morje
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Širca, Andrej | 11277 |
Rajar, Rudolf | 00112 |
Četina, Matjaž | 08247 |
Source: Personal bibliographies
and: SICRIS
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