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3篇 您的检索式:作者名="LI Pixue"
    题名 作者 年代 出处 被引量
1Physical processes causing the formation of hypoxia off the Changjiang estuary after Typhoon Chan-hom, 2015显示文摘Severe hypoxia was observed in the submarine canyon to the east of the Changjiang estuary in July 14, 2015, two days after typhoon Chan-hom. The oxygen concentration reached as low as 2.0 mg/L and occupied a water column of about 25 m. A ROMS model was con?gured to explore the underlying physical processes causing the formation of hypoxia. Chan-hom passed through the Changjiang estuary during the neap tide. The strati?cation was completely destroyed in the shallow nearshore region when typhoon passing. However, it was maintained in the deep canyon, though the surface mixed layer was largely deepened. The residual water in the deep canyon is considered to be the possible source of the later hypoxia. After Chan-hom departure, not only the low salinity plume water spread further of fshore, but also the sea surface temperature(SST) rewarmed quickly. Both changes helped strengthen the strati?cation and facilitate the formation of hypoxia. It was found that the surface heat ?ux, especially the solar short wave radiation dominated the surface re-warming, the of fshore advection of the warmer Changjiang Diluted Water(CDW) also played a role. In addition to the residual water in the deep canyon, the Taiwan Warm Current(TWC) was found to ?ow into the deep canyon pre-and soon post-Chan-hom, which was considered to be the original source of the hypoxia water.GUO Yaru RONG Zengrui LI Bo XU Zhao LI Pixue LI Xiaodan 2019Journal of Oceanology and Limnology2019,37,1:5
2TEMPO-Mediated Oxidation of Primary Alcohols to Aldehydes under Visible Light and Air显示文摘A homogeneous visible light photoredox TEMPO-mediated selective oxidation of primary alcohols to the corresponding carbonyl compounds was developed using molecular oxygen from air as the terminal oxidant.Ru(bpy)_(3)(PF_(6))_(2)(bpy:bipyridyl)and Ir(dtb-bpy)(ppy)_(2)(PF_(6))(dtb-bpy:4,4'-di-tert-butyl-2,2'-bipyridyl;ppy:2-phenylpyridine)were used as the sensitizers.Dongwang Liu Hongxia Zhou Xiangyong Gu Xiaoqin Shen Pixu Li 2014Chinese Journal of Chemistry2014,32,2:2
3Dominant climate factors influencing the Arctic runoff and association between the Arctic runoff and sea ice显示文摘By using the Arctic runoff data from R-ArcticNET V4.0 and ArcticRIMS,trends of four major rivers flowing into the Arctic Ocean,whose climate factor plays an important role in determining the variability of the Arctic runoff,are investigated.The results show that for the past 30 years,the trend of the Arctic runoff is seasonally dependent.There is a significant trend in spring and winter and a significant decreasing trend in summer,leading to the reduced seasonal cycle.In spring,surface air temperature is the dominant factor influencing the four rivers.In summer,precipitation is the most important factor for Lena and Mackenzie,while snow cover is the most important factor for Yenisei and Ob.For Mackenzie,atmospheric circulation does play an important role for all the seasons,which is not the case for the Eurasian rivers.The authors further discuss the relationships between the Arctic runoff and sea ice.Significant negative correlation is found at the mouth of the rivers into the Arctic Ocean in spring,while significant positive correlation is observed just at the north of the mouths of the rivers into the Arctic in summer.In addition,each river has different relationship with sea ice in the eastern Greenland Sea.LI Pixue ZHANG Zhanhai LIU Jiping 2010Acta Oceanologica Sinica2010,29,5:2
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