文献类型：期刊文献

中文题名：Remote sensing observations of phytoplankton increases triggered by successive typhoons

英文题名：Remote sensing observations of phytoplankton increases triggered by successive typhoons

作者：Lei HUANG[1,2];Hui ZHAO[1];Jiayi PAN[2,3,4];Adam DEVLIN[5]

机构：[1]College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China;[2]Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Hong Kong, China;[3]Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen 518057, China;[4]College of Marine Science, Nanjing University of Information Science and Technology, Nanjing 210044, China;[5]Department of Civil and Environmental Engineering, Portland State University, Portland, OR 97207, USA

年份：2017

卷号：11

期号：4

起止页码：601

中文期刊名：Frontiers of Structural and Civil Engineering

外文期刊名：结构与土木工程前沿（英文版）

收录：CSTPCD、、Scopus、CSCD2017_2018、CSCD

语种：英文

中文关键词：typhoon;mixed-layer depth;phytoplanktonbloom;Northwest Pacific Ocean;upwelling

外文关键词：typhoon, mixed-layer depth, phytoplanktonbloom, Northwest Pacific Ocean, upwelling

中文摘要：Phytoplankton blooms in the Western North Pacific, triggered by two successive typhoons with different intensities and translation speeds under different pre-existing oceanic conditions, were observed and analyzed using remotely sensed chlorophyll-a （Chl-a）, sea surface temperature （SST）, and sea surface height anomaly （SSHA） data, as well as typhoon parameters and CTD （conductivity, temperature, and depth） profiles. Typhoon Sinlaku, with relatively weaker intensity and slower translation speed, induced a stronger phytoplankton bloom than Jangrni with stronger intensity and faster translation speed （Chl-a〉0.18 mg-m-3 versus Chl- a〈 0.15 mg.m-3） east of Taiwan Island. Translation speed may be one of the important mechanisms that affect phytoplankton blooms in the study area. Pre-existing cyclonic circulations provided a relatively unstable thermodynamic structure for Sinlaku, and therefore cold water with rich nutrients could be brought up easily. The mixed-layer deepening caused by Typhoon Sinlaku, which occurred first, could have triggered an unfavorable condition for the phytoplankton bloom induced by Typhoon Jangmi which followed afterwards. The sea surface temperature cooling by Jangmi was suppressed due to the presence of the thick upper-ocean mixed-layer, which prevented the deeper cold water from being entrained into the upper-ocean mixed layer, leading to a weaker phytoplankton augment. The present study sug- gests that both wind （including typhoon translation speed and intensity） and pre-existing conditions （e.g., mixed- layer depths, eddies, and nutrients） play important roles in the strong phytoplankton bloom, and are responsible for the stronger phytoplankton bloom after Sinlaku＇s passage than that after Jangmi＇s passage. A new typhoon- influencing parameter is introduced that combines the effects of the typhoon forcing （including the typhoon intensity and translation speed） and the oceanic pre- condition. This parameter shows that the forcing effect of Sinlaku was stronger than that of Jangmi.

外文摘要：Phytoplankton blooms in the Western North Pacific, triggered by two successive typhoons with different intensities and translation speeds under different pre-existing oceanic conditions, were observed and analyzed using remotely sensed chlorophyll-a （Chl-a）, sea surface temperature （SST）, and sea surface height anomaly （SSHA） data, as well as typhoon parameters and CTD （conductivity, temperature, and depth） profiles. Typhoon Sinlaku, with relatively weaker intensity and slower translation speed, induced a stronger phytoplankton bloom than Jangrni with stronger intensity and faster translation speed （Chl-a〉0.18 mg-m-3 versus Chl- a〈 0.15 mg.m-3） east of Taiwan Island. Translation speed may be one of the important mechanisms that affect phytoplankton blooms in the study area. Pre-existing cyclonic circulations provided a relatively unstable thermodynamic structure for Sinlaku, and therefore cold water with rich nutrients could be brought up easily. The mixed-layer deepening caused by Typhoon Sinlaku, which occurred first, could have triggered an unfavorable condition for the phytoplankton bloom induced by Typhoon Jangmi which followed afterwards. The sea surface temperature cooling by Jangmi was suppressed due to the presence of the thick upper-ocean mixed-layer, which prevented the deeper cold water from being entrained into the upper-ocean mixed layer, leading to a weaker phytoplankton augment. The present study sug- gests that both wind （including typhoon translation speed and intensity） and pre-existing conditions （e.g., mixed- layer depths, eddies, and nutrients） play important roles in the strong phytoplankton bloom, and are responsible for the stronger phytoplankton bloom after Sinlaku＇s passage than that after Jangmi＇s passage. A new typhoon- influencing parameter is introduced that combines the effects of the typhoon forcing （including the typhoon intensity and translation speed） and the oceanic pre- condition. This parameter shows that the forcing effect of Sinlaku was stronger than that of Jangmi.