Spatial-temporal runoff patterns change of dissolved organic matter(DOM) fluorescence characteristics at
inflowing stream of industrial(4TG), urban(AS), and rural(MS) areas in Lake Sihwa. The result of synchronous
analysis in 4TG, PLF(Protein-like fluorescence) variation characteristics clearly appeared while no clear peaks
appeared in the FLF(Fulvic-like fluorescence) and HLF(Humic-like fluorescence) wavelength ranges. The results of
analysis using 3D-EEMs(3-Dimensional Excitation Emission Matrix Spectroscopy) showed a difference that
fluorescence distribution and variation clearly appeared in the FLF and HLF regions along with the PLF region and
DOM variation over time tended to be similar between the results of the two fluorescence analyses. The results of
synchronous analysis in AS showed that PLF, FLF and THLF(Terrestrial-like fluorescence) region peaks were clearer
during rainfall than when there was before rainfall. AS showed a distribution characteristics that PLF characteristics
did not disappear even during rainfall but continuously appeared during the duration of rainfall. The spatial-temporal
DOM variation and distribution characteristics during rainfall appeared through the synchronous method and the
3D-EEMs method showed similar tendencies although in the results of 3D-EEMs analysis. A characteristic that Peak
A region fluorescence intensity did not decrease during the duration of rainfall but maintained at least a certain range
of fluorescence intensity and spatial-temporal changes in the HLF region clearly appeared. The results of
synchronous analysis over time during rainfall in MS did not show great changes in PLF and FLF concentrations
while showing a regional characteristic that fluorescence intensity changes over time in the THLF region increased
greatly. The results of 3D-EEMs analysis, the Peak C region showed a characteristic of gradually decreasing
fluorescence intensity over time while the Peak A region continuously showed