JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

A (Atmospheric and Hydrospheric Sciences) » A-OS Ocean Sciences & Ocean Environment

[A-OS13] [EE] Continental-Oceanic Mutual Interaction: Global-scale Material Circulation through River Runoff

Tue. May 23, 2017 1:45 PM - 3:15 PM 302 (International Conference Hall 3F)

convener:Yosuke Yamashiki(Global Water Resources Assessment Laboratory - Yamashiki Laboratory Graduate School of Advanced Integrated Studies in Human Survivability Kyoto University), Yukio Masumoto(Graduate School of Science, The University of Tokyo), Swadhin Behera(Climate Variation Predictability and Applicability Research Group, Application Laboratory, JAMSTEC, 3173-25 Showa-machi, Yokohama 236-0001), Yasumasa Miyazawa(Japan Agency for Marine-Earth Science and Technology), Chairperson:Yukio Masumoto(Graduate School of Science, The University of Tokyo), Chairperson:Behera Swadhin(JAMSTEC)

3:00 PM - 3:15 PM

[AOS13-06] Relationship between pollen distribution and marine environment in Northern South China Sea

*Yeping Bian1 (1.Second Institute of Oceanography State Oceanic Administration)

Keywords:pollen distribution, marine environment, northern South China Sea

Then pollen records from the tropical West Pacific indicate that the tropical vegetation is much sensitive to the environment and climate change. But, for the marine pollen record, the source area and distribution of pollen grains is the key information for data analysis. Through the high density sample collection in the northern South China Sea, the distribution of the pollen grains show that, much high concentration is mainly along the coast line within 30 km away from the land, especially the estuary area. Then, with the distance between the land and the deposition point increasing, the value of the pollen drops sharply. Among that, the content of the pinus and spores is much high when the deposition points is 40-100 km range and 80-110 km range offshores, respectively. That indicates the very different transport path and ability among the pollen groups. Combined the topography and the grains size analysis result, it present that the pollen grains deposit in the terrain slope break and the less hydrodynamic areas when they are transported by the sea current.