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| 1 | 基于水下滑翔机观测数据的白令海海盆区域温度及溶解氧特征分析显示文摘基于2019年夏季中国第十次北极科学考察(“十北”科考)中“海燕”水下滑翔机观测的温度和溶解氧(Dissolved Oxygen,DO)数据,对白令海海盆区水团分类,及其温度和溶解氧分布特征进行了分析研究。结果表明:北极白令海海盆区水体一般由温度差异较为明显的上层水,中层水和深层水组成,其温度水平分布具有东高西低的特点,且随着深度的增加,水平温差逐渐减小。白令海上层水位于50 m以浅的位置,在约30~50 m深度处存在强温跃层,温跃层自西向东深度略有增加,且厚度不均匀,跃层强度约为0.31℃/m;白令海中层水位于50~250 m深度处,主要为冬季残留水,中层冬季残留水分布具有一定地区性差异,在此位置存在温度最小值,约为2.7℃;白令海深层水水体较稳定,温度随深度缓慢降低。对比垂直断面温度特征和溶解氧特征可知,白令海中层冬季残留水溶解氧含量较高,高于上层水团;在中层水与深层水之间存在氧跃层,氧含量从250μmol/L快速下降至50μmol/L,并随着深度的增加,在1000 m深处降至20μmol/L。 | 杨绍琼 李逸铭 陈红霞 牛文栋 马伟 何琰 兰世泉 | 2021 | 海洋科学进展2021，39，3： | 2 |
| 2 | Spatial variability of summertime aragonite saturation states and its influencing factor in the Bering Sea显示文摘The Bering sea is susceptible to ocean acidification driven by both human activities(anthropogenic CO_(2))and distinctive natural processes.To assess the situation of ocean acidification,we investigated the spatial variability of aragonite saturation states(ΩAr)in July 2010 during the 4th Chinese National Arctic Research Expedition(CHINARE).The surface waters were all oversaturated with respect to aragonite(ΩAr>1)due to high biological removal,andΩAr ranged from 1.43 to 3.17.The relatively lowΩAr values were found in the western Bering Strait and eastern nearshore region of the Bering Sea Shelf,which were associated with the upwelling and riverine input,respectively.In the subsurface,theΩAr decreased to generally low saturation states and were observed to be strongly undersaturated(ΩAr<1)in the bottom waters with a lowest value of 0.45,which might be caused by remineralization.However,unlike prior studies,the lowΩAr values in the shallow nearshore region were still above the saturation horizon throughout the water column,which were probably counteracted by high local primary production.In the context of climate change and increasing anthropogenic CO_(2)absorption,the suppression and undersaturation ofΩAr in the Bering Sea are not only attributed to the natural processes but also the accumulation of anthropogenic CO_(2). | SUN Heng GAO Zhong-Yong ZHAO De-Rong SUN Xiu-Wu CHEN Li-Qi | 2021 | Advances in Climate Change Research2021，12，4： | 1 |
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