J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. 2008;22(5):7-24.    

Assessment of the Marine Environment in Masan-Jinhae Bay of Korea in Relation to Algal Blooms
Lee Moon-Ock,Kim Pyeong-Joo,Moon Jin-Han
Dept. Naval Architecture and Ocean Engineering Chonnam National University,Land Ocean Environment Co. Ltd.,Dept. of Ocean Engineering Graduate School Chonnam National University
© 2008 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Marine environment, Algal blooms, Anoxic condition, Eutrophication, Water quality, Mathematical models
Abstract
Masan-Jinhae Bay, in Korea, is known for its frequent algal bloom outbreaks. This study was conducted in order to examine the environmental characteristics of the area, with the aim of identifying indicators that could be used to speculate about future algal blooms. The water temperatures and salinities in Haengam Bay, one of the small inner bays within Jinhae, appeared to re relatively higher than those in Masan and Jinhae bays, across most seasons. Furthermore, stratification begins to develop in all three regions from spring to summer as a result of the local heating effects and an increase in the efficient from the surrounding land. As a result, anoxic conditions appear near the bottom layer of the bay, leading to the deterioration of water quality, which has been identified as one of the causes of bloom outbreaks. Compared to Haengam and Jinhae bays, concentrations of DIN and DIP were remarkably higher in Masan Bay. However, the mean ratio of DIN to DIP was 3.3$sim$13.6 in all three regions throughout the year, suggesting that nitrogen can function as a growth-limiting factor for phytoplankton. The results of mathematical models showed that cumulative organic pollutants may be a trigger for direct algal bloom occurrences, since residual tidal currents appeared to be less than $3;cm;cdot;s^{-1}$. Furthermore, computed DO concentrations in the four small inner bays of Jinhae during the summer appeared to be $3;cm;cdot;l^{-1}$ indicating a hypoxic state. Likewise, computed Chl-a concentrations turned out to be more than $0.01;mg;cdot;l^{-1}$, indicating eutrophication across most seasons. Based on the overall results, Masan-Jinhae Bay appeared to possess a very high potential for algal bloom outbreaks at anytime during the year.
TOOLS
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 738 View
  • 1 Download


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY

Browse all articles >

PUBLICATION ETHICS
FOR CONTRIBUTORS
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2024 by The Korean Society of Ocean Engineers.

Developed in M2PI

Close layer
prev next