Occurrence and distribution of hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDG

• 作者: Sujin Kang Kyoung-Hoon Shin Jung-Hyun Kim
• 来源期刊: 地球化学学报(英文）
• 关键词: Hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDGTs) Sea surface temperature (SST) Han river Yellow Sea
• 年，卷（期）: 2017,（3）
• 页码范围: 367-369
• 页数: 2页
• 语种: 英文
• DOI: 10.1007/s11631-017-0165-3

摘要

We investigated the occurrence and distribution of terrestrial-derived hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDGTs) in the Han River system and their potential impact on the application of the ring index of OH-GDGTs (RI-OH) as a sea surface temperature (SST) proxy in the eastern Yellow Sea. Thereby, we analyzed various samples collected along the Han River and from its surrounding areas (South Korea, n=34). The OH-GDGTs were found in all samples investigated. OH-GDGT-0 was the dominant OH-GDGT component in the estuary and marine samples while OH-GDGT-2 was generally dominant in the soils, the lake sediments and the river sus-pended particulate matter (SPM). Our results thus suggests a possible warm bias of the RI-OH-derived summer SSTs in the coastal zone to which a large amount of terrestrial organic matter is being supplied. Further studies are necessary to better assess the applicability of the RI-OH proxy in the eastern Yellow Sea.