Sources and distribution of sedimentary organic matter along the northern Bering and Chukchi Seas.
Sources and distribution of sedimentary organic matter along the northern Bering and Chukchi Seas.
复制标题
白令海和楚科奇海北部沉积有机质的来源和分布。
DOI：
10.1016/j.jes.2016.04.003
复制
发表时间：
2017
影响因子：
6.9
通讯作者：
P. Loh
中科院分区：
文献类型：
--
作者：
Fanglu Xu;Haiyan Jin;Z. Ji;Jianfang Chen;P. Loh
本研究利用木质素衍生酚类物质研究了北极北方白令海和楚科奇海沿着沉积有机质的来源和分布。木质素参数S/V和C/V分别指示植物来源，而（Ad/Al）v和（Ad/Al）s分别指示木质素成岩作用。结果表明，在白令海北方最东端的位置木本裸子植物信号占优势，在楚科奇海的位置为难降解的非木本被子植物和较新鲜的裸子植物组织的混合，在楚科奇海的位置为较新鲜的木本裸子植物组织的信号。木质素类物质在沿北方白令海沿着运输过程中，分解阶段逐渐增加。流体动力分选过程，这是较粗的材料近岸和运输较细的颗粒更远的离岸，最有可能发生沿着东海岸的北方白令海。在楚科奇海，非木本被子植物组织可能来自加拿大北极，裸子植物组织可能来自俄罗斯北极一侧。楚科奇海最北端的新鲜材料可能是通过冰筏漂流的方式运到这里的。新鲜木质素物质的检测和木质素分解的发生意味着该地区可能对气候变化的影响很敏感。
In this study, lignin-derived phenols were used to determine the sources and distribution of sedimentary organic matter along the northern Bering Sea and Chukchi Sea of the Arctic Ocean. The lignin parameter syringyl/vanillyl (S/V) and cinnamyl/vanillyl (C/V) ratios are used to indicate vegetation sources; and the ratios of vanillic acid/vanillin, (Ad/Al)v and syringic acid/syringaldehyde, (Ad/Al)s are used as indicators of lignin diagenesis. Results showed the predominance of woody gymnosperm signal at the easternmost location in the northern Bering Sea, a mixture of refractory non-woody angiosperm and fresher gymnosperm tissues in the Chukchi Sea, and signal of fresher woody gymnosperm tissues in the northernmost locations in the Chukchi Sea. The lignin materials showed gradual increase in decomposition stage during transport along the northern Bering Sea. Hydrodynamic sorting process, which is the retention of coarser materials nearshore and transportation of finer particles farther offshore, most probably occurred along the east coast of the northern Bering Sea. In Chukchi Sea, the non-woody angiosperm tissues could have originated from the Canadian Arctic and gymnosperm tissues could be from the Russian Arctic side. The fresher materials in the northernmost Chukchi Sea could have been transported hereviathe ice-rafting process. Detection of fresh lignin materials and the occurrence of lignin decomposition mean that this region could be sensitive to the impact of climate change.
DOI：
10.1016/j.dsr2.2005.08.007
发表时间：
2005-08
影响因子：
3
作者：
T. Sakamoto;M. Ikehara;K. Aoki;K. Iijima;N. Kimura;T. Nakatsuka;M. Wakatsuchi
通讯作者：
T. Sakamoto;M. Ikehara;K. Aoki;K. Iijima;N. Kimura;T. Nakatsuka;M. Wakatsuchi
影响因子：
3.9
作者：
Masanobu Yamamoto;L. Polyak
通讯作者：
Masanobu Yamamoto;L. Polyak