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master's thesis
Spectral formulation of the critical depth theory
2021. urn:nbn:hr:166:071259
Turčinov, Robert
University of Split
Faculty of Science
Department of Physics

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Turčinov, R. (2021). Spectral formulation of the critical depth theory (Master's thesis). Split: University of Split, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:166:071259

Turčinov, Robert. "Spectral formulation of the critical depth theory." Master's thesis, University of Split, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:166:071259

Turčinov, Robert. "Spectral formulation of the critical depth theory." Master's thesis, University of Split, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:166:071259

Turčinov, R. (2021). 'Spectral formulation of the critical depth theory', Master's thesis, University of Split, Faculty of Science, accessed 27 February 2025, https://urn.nsk.hr/urn:nbn:hr:166:071259

Turčinov R. Spectral formulation of the critical depth theory [Master's thesis]. Split: University of Split, Faculty of Science; 2021 [cited 2025 February 27] Available at: https://urn.nsk.hr/urn:nbn:hr:166:071259

R. Turčinov, "Spectral formulation of the critical depth theory", Master's thesis, University of Split, Faculty of Science, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:166:071259

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Metadata
TitleSpectral formulation of the critical depth theory
Title (croatian)Spektralna formulacija teorije kritične dubine
AuthorRobert Turčinov
MentorŽarko Kovač (mentor)
Committee memberŽarko Kovač (predsjednik povjerenstva)
Committee memberIvana Weber (član povjerenstva)
Committee memberJadranka Šepić (član povjerenstva)
GranterUniversity of Split
Faculty of Science
(Department of Physics)
Split
Defense date and country2021-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
Phytoplankton is a group of plant plankton that can live in the uppermost sunlight ocean. It requiers ocean light and nutrients to sustain itself. This group of plankton plays a major role in the ocean ecosystem due to the process of photosynthesis (primary production) in which carbon assimilation occurs. The intensity of light in the ocean decreases exponentially with depth with the rate of decrease determined by the optical properties of seawater, which are also determined by the amount of plankton in the sea. This work describes the basics of a competition model, critical depth theory and a primary production model. The work also describes mathematically how the expression for the temporal evolution of phytoplankton biomass in time is derived from an advection-diffusion-reaction equation. In this work two models are described: monochromatic model for one, two and N phytoplankton populations and a spectral model for one and two phytoplankton populations. At the end of the work, a competition model for phytoplankton is described which predicts which species will survive and whether both species can coexist in the ocean.
Abstract (croatian)
Fitoplankton predstavlja skupinu biljnih planktona koji mogu živjeti u površinskom osunčanom sloju oceana. Za preživljavanje fitoplanktona potrebna je svjetlost i hranjive tvari. Ova skupina planktona ima važnu ulogu u morskom ekosustavu zbog fotosinteze (primarne proizvodnje) pri kojoj dolazi do asimilacije ugljika. Intenzitet svjetlosti u oceanu eksponencijalno opada s dubinom ovisno o optičkim svojstvima morske vode, ali i o količini planktona u moru. U ovom radu opisane su osnove natjecateljskog modela, teorije kritične dubine i modela primarne proizvodnje. Rad također opisuje matematički formalizam koji pokazuje kako se dobije izraz za vremensku evoluciju biomase fitoplanktona izveden iz advekcijsko-difuzijsko-reakcijske jednadžbe. U radu su opisana dva modela: monokromatski model za jednu, dvije i više populacija fitoplanktona te spektralni model za jednu i dvije populacije fitoplanktona. Na kraju rada opisan je natjecateljski model za fitoplanktone koji pokazuje koja će vrsta preživjeti te mogu li dvije vrste koegzistirati u oceanu.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:166:071259
Study programmeTitle: Physics; specializations in: major in teaching, major in Astrophysics, major in Biophysics, major in Enviromental physics, major in Computational physics, major in Astrophysics and physics of elemental particles
Course: major in Enviromental physics
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) icon
Public noteKljučne riječi unio urednik.
Created on2021-10-01 08:23:10