I= A QUANTITATIVE STUDY OF EFFECTS OF OZONE LAYER DEPLETION ON MARINE ORGANISMS WITH REFERENCE TO COASTAL REGIONS OF PAKISTAN
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Title of Thesis
A QUANTITATIVE STUDY OF EFFECTS OF OZONE LAYER DEPLETION ON MARINE ORGANISMS WITH REFERENCE TO COASTAL REGIONS OF PAKISTAN

Author(s)
Muhammad Ayub Khan Yousafzai
Institute/University/Department Details
University Of Karachi/ Institute of Space and Planet Astrophysics
Session
2003
Subject
Astrophysics
Number of Pages
251
Keywords (Extracted from title, table of contents and abstract of thesis)
ozone layer, marine organisms, coastal regions, pakistan, ozonosphere, solar uv radiation, ultraviolet flux

Abstract
Though, ozone is a minor constituent of the atmosphere of the earth, it is of considerable importance to mankind because of its role as a shield for the biosphere against the UV radiation from the outer space, in particular from the sun. Developing a quantitative treatment for body of data covering a specific period, this thesis reports for Pakistan an explorative assessment of the ozone layer depletion. The study also appraises results in terms of physical interpretation. For the empirical study of OLD and its fluctuating dynamics stochastic models are developed and are compared with regression models

The process of the filtration of solar UV radiation through ozonosphere and the mechanism of the penetration of UV radiations in the stratosphere are studied by quantifying the UV flux reaching the earth via ozone filter and constructing probabilistic and stochastic models. Bolometry of stratospheric ozone is carried out to study variations due to OLD in sea surface temperature and the wavelength of maximum emission of infra red radiation reaching the sea surface

The thesis further studies the direct and indirect effects of OLD and UV radiations on marine organisms, such as fish, phyto-plankton, fish yield of the Baluchistan and Sindh coasts of Pakistan

It is hoped that our models and forecasts will be useful for various private, and public sector organizations

Download Full Thesis
2265.54 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents 0
55.66 KB
2 1 Introduction 7
153.18 KB
3 2 Quantitative Modeling Of Old 14
798.4 KB
  2.1 Quantitative Aspect Showing The Physical Behaviour Of Old For Pakistan ’s Atmospheric Region 14
  2.2 Probabilistic Approach For Modeling Old: Exploratory Analysis Of Stratospheric Ozone Data For Pakistan ’s Atmospheric Region
  2.3 Statistical Approach For Modeling Old
  2.4 Empirical Modeling Of Old
  2.5 Stratospheric Old As A Physical Process And Modeling Its Fluctuating Dynamics
  2.6 Appropriateness Of Autoregressive Modeling For Determining Ozone Layer Depletion As A Physical Process As Compared To That Of Regression Modeling
4 3 Physical Aspects Of The Effects Of Old 94
303.1 KB
  3.1 Flux Of Uv Radiation
  3.2 Modelling Of Computed Ultraviolet Flux Via Ozone Filter Reaching Aracian Sea
  3.3 Bolometry Of Stratospheric Ozone And A Sea Surface Temperature Model
5 4 Effects Of Old On Marine Organisms 122
98.29 KB
  4.1 Uv Radiation And Marine Organisms
  4.2 Modelling Fish Yield Data For Coastal Regions Of Pakistan
  4.3 Effects Of Old And UV Flux On Fish Yield
6 5 Conclusion, Outlook And Open Problems 132
64.43 KB
7 6 References 138
177.8 KB
8 7 Appendix-I 158
911.32 KB
  7.1 Appendix-II 222
  7.2 Appendix-III 250
  7.3 Appendix-IV 251