Title page for etd-0028116-112244


[Back to Results | New Search]

URN etd-0028116-112244
Author Hsiao-Tan Huang
Author's Email Address No Public.
Statistics This thesis had been viewed 5571 times. Download 37 times.
Department Institute of Undersea Technology
Year 2015
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A numerical study on the impact of internal waves on biogeochemistry in Dongsha area
Date of Defense 2016-01-06
Page Count 129
Keyword
  • internal wave
  • nutrient
  • phytoplankton
  • zooplankton
  • Dongsha
  • Chlorophyll-a
  • Abstract Internal waves occur frequently near Dongsha Atoll in the South China Sea. Vertical mixing induced by these waves may entrain cold nutrient-rich water from subsurface layer to surface layer, and resulting in high concentration of chlorophyll due to enhanced photosynthesis. A numerical study on the impact of internal waves on biogeochemistry in Dongsha area is executed. MODIS chlorophyll data is used to validate the relationship among nutrient, phytoplankton and zooplankton.
    When NPZ model runs 200 days, there is a significant interaction between any two of nutrient, phytoplankton and zooplankton (nutrient vs. phytoplankton, nutrient vs. zooplankton, or phytoplankton vs. zooplankton) and there is no interaction with the left one.The sum of the concentration of nutrient, phytoplankton and zooplankton are called NPZ mode threshold value. When the sum of three concentrations reaches NPZ mode threshold value, there will be a significant interaction among nutrient, phytoplankton and zooplankton. If the maximum growth rates of phytoplankton (Vm) are set to be 1, 2, and 3, the NPZ mode threshold values are about 1.6~2.0, 2.1~2.2, and 2.2~2.5 m mol N m-3, respectively.
    In this study, the variation of the biomasses corresponding to nutrient, phytoplankton and zooplankton is simulated by an interacting Nutrient-Phytoplankton-Zooplankton (NPZ) model. The results show that the chlorophyll blooms in two days after cold water intrusion. Three days after the bloom, the concentration of zooplankton reaches its peak value.
    Advisory Committee
  • Jia-Jang Hung - chair
  • Yu-Huai Wang - co-chair
  • Chia-Cheng Tsai - co-chair
  • Guan-Yu Chen - advisor
  • Files
  • etd-0028116-112244.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2016-01-28

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys