In March to August 2013, the emission of gases (CH4, VOC, CO2, O2, and LEL) was measured three times from the
intertidal flat sediments at Sogeun-ri, Taean-gun, in the Mid-western seashore of Korea by using chamber method. After
analyzing gas emission concentrations inside of flux enclosure chamber by using a GC equipped with Agilent 6890. The
gas emission fluxes were calculated from a linear regression of the changes in the concentrations with time. The ranges
of gas flux during the experimental period were +0.06~+0.60 mg/m2/hr for CH4, +58.45~+95.58 mg/m2/hr for CO2,
-0.02~-0.20 mg/m2/hr for O2, and ?0.60~+0.65 mg/m2/hr for VOC, respectively. The flux measurement results revealed
that CH4 fluxes during March in the relatively low sediment temperature (14.5℃) were significantly higher (+0.60
mg/m2/hr) than during June and August (+0.06~+0.18 mg/m2/hr) in high sediment temperature (32.0~36.8℃). CH4 flux to
mean size of sediments and temperature of inner chamber exhibited strong positive correlation (R2=-0.97 and R2=-0.89,
respectively).