Environmental Engineering Reference
In-Depth Information
Fig. 1
Absorption spectra of
upstream CDOM (
a
,
b
Nishi-
Mattaya and Higashi-Mataya,
Lake Biwa watershed, Japan),
and downstream CDOM
(
c
Yasu River, Lake Biwa
watershed, Japan).
Data
source
Mostofa KMG et al.
(unpublished data)
(a)
0.06
River waters (before irradiation)
Irradiated river waters (after 1 day)
Irradiated river waters (after 10 days)
Irradiated river waters (after 13 days)
Dark incubated river waters (after 13 days)
0.05
0.04
0.03
0.02
0.01
0.00
250
300
350
400
450
500
550
600
650
700
-0.01
(b)
0.025
0.02
0.015
0.01
0.005
0
250
300
350
400
450
500
550
600
650
700
-0.005
(c)
0.06
0.05
0.04
0.03
0.02
0.01
0.00
250
300
350
400
450
500
550
600
650
700
sources of CDOM are 10-150 times higher than those of marine CDOM, whilst
coastal waters that receive riverine inputs typically possess higher CDOM absorp-
tion coefficients than open ocean waters (Arrigo and Brown
1996
; Vähätalo
and Wetzel
2004
; Carder et al.
1989
; del Vecchio and Blough
2004
; del Vecchio
