Mechanisms of upper ocean chlorophyll a response to fast-moving Typhoon Hagupit in South China Sea
文献类型：期刊论文
| 作者 | Wang, Haoyu1,2,3,4; Yang, Bing1,2,3,4; Yin, Yuqi1,2,3,4; Hu, Po1,2,3,4 |
| 刊名 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2025-09-15 |
| 页码 | 17 |
| 关键词 | fast-moving typhoon
near-inertial waves
chlorophyll- |
| ISSN号 | 2096-5508 |
| DOI | 10.1007/s00343-025-5018-z |
| 通讯作者 | Yang, Bing(yangbing@qdio.ac.cn) |
| 英文摘要 | Typhoons can induce significant changes in the upper ocean, increasing sea surface nutrients via mixing, entrainment, and upwelling, which often leads to a substantial phytoplankton bloom in an oligotrophic region of the South China Sea (SCS), subsequently triggers carbon cycling and ecosystem responses, and enhances local marine primary productivity. Using a coupled physical-biogeochemical model, we analyzed the dynamic and ecological responses of the shelf region near the Dongsha Islands in the SCS caused by the fast-moving Typhoon Hagupit, and investigated the underlying mechanisms of sea surface chlorophyll-a increase. Results indicate that after Hagupit, sea surface temperature along the typhoon path rapidly decreased by maximum of 5.2 degrees C, and the chlorophyll a along the typhoon path increased. In the shelf region near the Dongsha Islands, the sea surface chlorophyll a increased from 0.07 mg/m3 (weekly average) to 0.14 mg/m3 after Hagupit. The maximum increase reached 0.16 mg/m3, occurred 6 days after Hagupit, which is more than twice the average concentration before the typhoon. In contrast, the subsurface chlorophyll a decreased from 0.18 to 0.10 mg/m3. Power spectral analysis of horizontal velocity indicated that Hagupit triggered strong near-inertial waves (NIWs), which had a period of approximately 31.45 h, slightly greater than the local inertial period, and lasted for about one week. Therefore, we believed that while fast-moving typhoons cannot induce strong Ekman pumping velocity (EPV) as slow-moving ones do, they can trigger NIWs. The NIWs enhanced turbulent mixing in the upper 60 m, causing directly a rapid increase in sea surface chlorophyll a and nutrients after the typhoon. Two to three days later, the nitrates uptake by sea surface phytoplankton increased, promoting phytoplankton growth. Therefore, the variability in upper-ocean chlorophyll a induced by fast-moving typhoons involves not only strong dynamic processes but also significant participation of marine biological processes. |
| WOS关键词 | NEAR-INERTIAL WAVES ; TROPICAL CYCLONES ; BIOGEOCHEMICAL PROCESSES ; PHYTOPLANKTON ; ENHANCEMENT ; SHELF ; PART ; TURBULENCE ; SURFACE ; SYSTEM |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001571215700001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203389]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Yang, Bing |
| 作者单位 | 1.Key Lab Ocean Observat & Forecasting, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Haoyu,Yang, Bing,Yin, Yuqi,et al. Mechanisms of upper ocean chlorophyll a response to fast-moving Typhoon Hagupit in South China Sea[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2025:17. |
| APA | Wang, Haoyu,Yang, Bing,Yin, Yuqi,&Hu, Po.(2025).Mechanisms of upper ocean chlorophyll a response to fast-moving Typhoon Hagupit in South China Sea.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,17. |
| MLA | Wang, Haoyu,et al."Mechanisms of upper ocean chlorophyll a response to fast-moving Typhoon Hagupit in South China Sea".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2025):17. |
入库方式： OAI收割
来源：海洋研究所
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