Sulfur hexafluoride as a complementary method for measuring the extent of point-source thermal effluents

Tae-Wook Kim, Kitack Lee, Ki Tae Park, Miok Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The transport and dilution dynamics of power-plant thermal effluent were measured for 10 consecutive days, between 25 June and 4 July 2006, by concurrently mapping the daily distributions of seawater temperature and concentrations of deliberately released sulfur hexafluoride (SF 6 ) within the tidal Kwangyang Bay on the southern coast of Korea. Estimates of the daily extent of the thermal plume based on temperature and SF 6 data showed distinct differences. These differences were particularly pronounced on sunny days during which solar radiation significantly heated river or bay waters moving across the tidal flats; in these cases, the estimates based on seawater temperature data were consistently greater than those based on SF 6 data, indicating considerable overestimates of the extent of the thermal plume when temperature data were used. The present results indicate that the concurrent use of seawater temperature and SF 6 data is a powerful method in determining the extent of thermal plumes, particularly for shallow areas in which the effects of solar heating lead to large uncertainties in temperature-based estimates.

Original languageEnglish
Pages (from-to)1294-1302
Number of pages9
JournalMarine Pollution Bulletin
Volume56
Issue number7
DOIs
Publication statusPublished - 2008 Jul 1
Externally publishedYes

Fingerprint

Thermal effluents
sulfur hexafluoride
Sulfur hexafluoride
point source
effluents
sulfur
Thermal plumes
effluent
heat
Seawater
temperature
plume
seawater
Temperature
methodology
Solar heating
power plants
tidal flat
Solar radiation
Dilution

Keywords

  • Air-sea gas exchange
  • Power plant
  • Solar heating
  • Sulfur hexafluoride
  • Thermal plume
  • Tidal flats

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

Cite this

Sulfur hexafluoride as a complementary method for measuring the extent of point-source thermal effluents. / Kim, Tae-Wook; Lee, Kitack; Park, Ki Tae; Kim, Miok.

In: Marine Pollution Bulletin, Vol. 56, No. 7, 01.07.2008, p. 1294-1302.

Research output: Contribution to journalArticle

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