极地研究2016，Vol.28Issue(2)：211-218,8.DOI:10.13679/j.jdyj.2016.2.211
东南极夏季中山站邻近固定冰 DMS、DMSP分布初探
PRELIMINARY INVESTIGATION OF THE DISTRIBUTION OF DIMETHYLSULFIDE(DMS)AND DIMETHYLSULFONIOPROPIONATE (DMSP)IN COASTAL FAST ICE NEAR ZHONGSHAN STATION OF EAST ANTARCTICA DURING THE AUSTRAL SUMMER
摘要
Abstract
The distribution of dimethylsulfide (DMS)and dimethylsulfoniopropionate (DMSP)in ice cores was analyzed. The cores were drilled from coastal fast ice off Zhongshan Station in East Antarctica during the 30th Chinese Nation-al Antarctic Research Expedition.The highest concentrations of DMSP + DMS were 1 1 4.93 nmol · L -1 and 1 34.41 nmol·L -1 ,observed in the top layer of two ice cores.Both DMS and DMSP +DMS concentrations de-creased from the top to bottom of the ice cores.There were two different factors controlling DMSP +DMS in the upper layer of the ice cores;one was related to algal assemblages,and the other was related to DMS accumulation in the slush layer.This DMS accumulation occurs because the ice and snow layer covering the sea ice blocks the emission of DMS into the atmosphere.Concentrations of Chlorophyll a (Chl a)and DMSP +DMS were low in the bottom of ice cores because the bottom layer of sea ice with high biomass melted during the summer.During the sea ice melting season,gravity-related drainage of brine could alter the vertical distribution of Chl a and DMSP +DMS.The integrated Chl a and DMSP +DMS in ice cores analyzed during the present study (6.79 - 1 0.20 mg ·m -2 and 51 .83 - 88.41 μmol·m -2 ,respectively)were low compared with previous studies,indicating that the melt process could lead to a decline in biomass and DMSP +DMS in ice cores.关键词
海冰/冰芯/二甲基硫(DMS)/二甲基巯基丙酸(DMSP)/南极Key words
sea ice/ice core/dimethylsulfide (DMS)/dimethylsulfoniopropionate (DMSP)/Antarctica引用本文复制引用
张麋鸣,陈立奇,肖钲霖..东南极夏季中山站邻近固定冰 DMS、DMSP分布初探[J].极地研究,2016,28(2):211-218,8.基金项目
国家海洋局“南北极环境综合考察与评估”专项（CHINARE2012-2015，01-04-02，01-02-01，03-04-02）、国家自然科学基金重点项目（41230529、41476172）、国家海洋局极地考察办公室对外合作支持项目（IC201201，IC201308，IC201513）、国家海洋局第三海洋研究所基金项目（HE150603-16（1））资助 （）
