厦门大学同位素海洋化学实验室

2019.03.01

09:00

周隆泉楼

B3-202

张潇

A modern chronology records of black carbon constrained by ²¹⁰Pb in Antarctic sediments and its implications

李俊杰

阮梦豫

Spectroscopic characterization and composition of CDOM in the Jiulong River

报告提要

张潇：（1）南极半岛附近海域两根陆架沉积物岩芯百年尺度沉积速率的变化及其指征；（2）结合BC含量、通量年代际的变化和BC的¹⁴C年龄工业革命前后的变化，讨论人类活动在南极海域沉积物的记录情况；（3）BC/TOC值可作为指征海洋生产力变化的潜在指标

阮梦豫：（1）九龙江河水有色溶解有机物主要来源于流域内植物和土壤淋溶作用，并受到降雨、生物吸收和利用以及光氧化等生物地球化学过程的调控；（2）九龙江下游有色溶解有机物特性时间和空间上相对稳定的原因

2019.03.15

09:00

周隆泉楼

B3-202

李丹阳

The possible coupling relationship between marine carbon fixation and N₂ fixation

陈梦雅

李晓鹏

Nitrogen Biogeochemical Processes Identified by Nitrate Isotopic Compositions in the Daya Bay and Jiaozhou Bay

江游

Radium isotopes in the Chukchi Sea: source and fate

报告提要

李丹阳：（1）N₂ fixation is an essential source of bio-available fixed-N for the oceans and plays a key role in marine biogeochemical cycles, exerting a profound impact on the global climate;（2）We observe positive correlations between NFR , PP and DOC in Jiaozhou Bay and Daya Bay, during the spring and summer cruises. This indicate the potential regulation of C fixation on N₂ fixation via the release of DOC ;（3）In addition to nutrient competition, we suppose that the transfer of diazotrophic-derived N and bio-available C may be another coupling relationship between marine C fixation and N₂ fixation

李晓鹏：（1）影响大亚湾和胶州湾硝酸盐氮、氧同位素组成的主要生物地球化学过程；（2）这些生物地球化学过程的季节差异以及调控因素

江游：（1）三端元混合模型计算楚科奇陆架和东西伯利亚陆架淡水分布；（2）质量平衡模型计算楚科奇陆架区Ra的沉积物释放通量及生物吸收通量

2019.03.22

09:00

周隆泉楼

B3-202

范玲芳

The effect of organic carbon on denitrification in Daya Bay

阮梦豫

林峰

Nitrate isotope distribution in Western North Pacific

报告提要

范玲芳：（1）Temporal and spatial variation of denitrification rate in Daya Bay;（2）Effect of particulate organic matter quality and availability on denitrification;（3）Specific mechanisms and roles of different electron donors on the rates of denitrification

林峰：（1）Nitrate isotope characteristic in the Western Subtropical Gyre and Kuroshio-Oyashio Transition Area

2019.03.29

09:00

周隆泉楼

B3-202

朱晶

Both elevated nitrification and denitrification on the Bering Sea shelf from July to September, evidenced from the nitrogen isotopes

姜朝华

杨紫菲

西北太平洋海山区沉积物粒度分布

李俊杰

The seasonal variation in suspended particulate P in Jiaozhou Bay

报告提要

朱晶：（1）5次北极白令海陆架东西向断面（9月采样）的营养盐、硝酸盐氮同位素及颗粒氮同位素的分布特征；（2）6次北极白令海陆架东西向断面（7月采样）的营养盐、硝酸盐氮同位素及颗粒氮同位素的分布特征；（3）2个航次同一断面各参数分布的季节性差异，反映了从7月到9月，白令海陆架的硝化和反硝化作用均增强

杨紫菲：（1）研究区域沉积物中生源组分对粒度分布的影响；（2）从粒度角度分析不同站位沉积物中古环境记录不同的原因

李俊杰：（1）分析胶州湾颗粒态磷不同组分的季节性变化特征及其受控因素；（2）利用²³⁴Th -²³⁸U不平衡法计算颗粒磷在沉积物-水界面上的迁移速率，重构胶州湾磷源汇收支；（3）解析颗粒态磷在不同营养盐结构下所扮演的角色