TY - JOUR
T1 - Vertical profile of organic and elemental carbon in sediments of Songkhla Lake, Thailand
AU - Pongpiachan, Siwatt
AU - Tipmanee, Danai
AU - Choochuay, Chomsri
AU - Hattayanone, Mattanawadee
AU - Deelaman, Woranuch
AU - Iadtem, Natthapong
AU - Bunsomboonsakul, Suratta
AU - Palakun, Jittree
AU - Poshyachinda, Saran
AU - Leckngam, Apichart
AU - Somboonpon, Pitipong
AU - Panyaphirawat, Thirasak
AU - Aukkaravittayapun, Suparerk
AU - Wang, Qiyuan
AU - Xing, Li
AU - Li, Guohui
AU - Han, Yongming
AU - Cao, Junji
N1 - Publisher Copyright:
© 2019, The Japanese Society of Limnology.
PY - 2019/4/15
Y1 - 2019/4/15
N2 - In this study, a historical record of atmospheric deposition in the sediment cores from Songkhla Lake, the second largest lake in Southeast Asia, located in the southern part of Thailand is reported. It is well known that lake sediments, including spheroidal carbonaceous particles generated by both anthropogenic and natural emissions, contain records of lake, catchment, and atmospheric deposition histories. Vertical profiles of these carbonaceous particles can be used to investigate enormously influential disturbances, particularly those triggered by extreme paleo events, over large spatial areas. In this study, organic carbon/elemental carbon (OC/EC) ratios displayed unusually high values of 3.07 and 4.02 for depths 240 and 340 mm, respectively. Previous studies have attributed remarkably high values of OC/EC ratios to both biomass burnings and volcanic eruptions. Although anthropogenic emissions (e.g. fossil fuel combustions) can be responsible for relatively high levels of contamination, as expected, the existence of relatively low OC/EC ratios (i.e. 1.43 ± 0.30) for all sediment samples (except those collected at 240 and 340 mm depths) suggests a tropical background of these particles.
AB - In this study, a historical record of atmospheric deposition in the sediment cores from Songkhla Lake, the second largest lake in Southeast Asia, located in the southern part of Thailand is reported. It is well known that lake sediments, including spheroidal carbonaceous particles generated by both anthropogenic and natural emissions, contain records of lake, catchment, and atmospheric deposition histories. Vertical profiles of these carbonaceous particles can be used to investigate enormously influential disturbances, particularly those triggered by extreme paleo events, over large spatial areas. In this study, organic carbon/elemental carbon (OC/EC) ratios displayed unusually high values of 3.07 and 4.02 for depths 240 and 340 mm, respectively. Previous studies have attributed remarkably high values of OC/EC ratios to both biomass burnings and volcanic eruptions. Although anthropogenic emissions (e.g. fossil fuel combustions) can be responsible for relatively high levels of contamination, as expected, the existence of relatively low OC/EC ratios (i.e. 1.43 ± 0.30) for all sediment samples (except those collected at 240 and 340 mm depths) suggests a tropical background of these particles.
KW - Elemental carbon
KW - Lake sediment
KW - Organic carbon
KW - Songkhla lake
UR - https://www.scopus.com/pages/publications/85059466412
U2 - 10.1007/s10201-018-0568-9
DO - 10.1007/s10201-018-0568-9
M3 - 文章
AN - SCOPUS:85059466412
SN - 1439-8621
VL - 20
SP - 203
EP - 214
JO - Limnology
JF - Limnology
IS - 2
ER -