Effect of Nonlinear Factors on Typhoon-Induced Storm Surges
This study employs the Delft3D numerical model to elucidate nonlinear interactions in velocity dynamics across four key marine regions during typhoon-induced storm surges (Typhoon In-fa, No. 2106). To address gaps in understanding how typhoon winds drive storm surges, this study aims to analyze the...
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MDPI AG
2024-12-01
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| author | Fanjun Chen Kaixuan Ding Zhilin Sun |
| author_facet | Fanjun Chen Kaixuan Ding Zhilin Sun |
| author_sort | Fanjun Chen |
| collection | DOAJ |
| description | This study employs the Delft3D numerical model to elucidate nonlinear interactions in velocity dynamics across four key marine regions during typhoon-induced storm surges (Typhoon In-fa, No. 2106). To address gaps in understanding how typhoon winds drive storm surges, this study aims to analyze the relative contributions of bottom friction, wind stress, and convective terms to storm surge dynamics, providing insights for predictive modeling and marine hazard mitigation. Introducing a novel metric, the “Flow Velocity Nonlinear Coupling Proportion” (“FVNCP”, abbreviated as “NCP”), this research quantifies the interactive effects of storm surge flow velocity by dissecting the contributions of bottom friction, wind stress, and the convective term. Through decision tree modeling, wind stress emerges as the primary driver of <i>NCP</i> in open sea and sheltered areas, with peak values reaching 1.50 × 10<sup>−4</sup> and 2.14 × 10<sup>−4</sup> m/s<sup>2</sup>, respectively. In contrast, the convective term dominates the strait and bypassing regions, exhibiting maximum impacts of 3.21 × 10<sup>−4</sup> and 2.94 × 10<sup>−4</sup> m/s<sup>2</sup>, while bottom friction’s influence is consistently minor across all regions. Wind stress contributes the most to <i>NCP</i> in open waters, at an average of 48.28%, while the convective term exerts a comparable 38.85% effect. In confined areas like the strait and bypassing regions, the convective term accounts for 40–44% of the <i>NCP</i>, with wind stress contributing 32–39%. The role of bottom friction is the least among the three factors though its impact intensifies in shallower zones. These findings offer critical insights for advancing predictive models and informing strategies to mitigate typhoon-driven marine hazards. |
| format | Article |
| id | doaj-art-dd81865aee9c4b8eb47cb752c0616b74 |
| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-dd81865aee9c4b8eb47cb752c0616b742025-01-24T13:36:31ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-12-01131510.3390/jmse13010005Effect of Nonlinear Factors on Typhoon-Induced Storm SurgesFanjun Chen0Kaixuan Ding1Zhilin Sun2College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaWater Affairs Bureau of Jiujiang District, Jiujiang District, Wuhu 241001, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaThis study employs the Delft3D numerical model to elucidate nonlinear interactions in velocity dynamics across four key marine regions during typhoon-induced storm surges (Typhoon In-fa, No. 2106). To address gaps in understanding how typhoon winds drive storm surges, this study aims to analyze the relative contributions of bottom friction, wind stress, and convective terms to storm surge dynamics, providing insights for predictive modeling and marine hazard mitigation. Introducing a novel metric, the “Flow Velocity Nonlinear Coupling Proportion” (“FVNCP”, abbreviated as “NCP”), this research quantifies the interactive effects of storm surge flow velocity by dissecting the contributions of bottom friction, wind stress, and the convective term. Through decision tree modeling, wind stress emerges as the primary driver of <i>NCP</i> in open sea and sheltered areas, with peak values reaching 1.50 × 10<sup>−4</sup> and 2.14 × 10<sup>−4</sup> m/s<sup>2</sup>, respectively. In contrast, the convective term dominates the strait and bypassing regions, exhibiting maximum impacts of 3.21 × 10<sup>−4</sup> and 2.94 × 10<sup>−4</sup> m/s<sup>2</sup>, while bottom friction’s influence is consistently minor across all regions. Wind stress contributes the most to <i>NCP</i> in open waters, at an average of 48.28%, while the convective term exerts a comparable 38.85% effect. In confined areas like the strait and bypassing regions, the convective term accounts for 40–44% of the <i>NCP</i>, with wind stress contributing 32–39%. The role of bottom friction is the least among the three factors though its impact intensifies in shallower zones. These findings offer critical insights for advancing predictive models and informing strategies to mitigate typhoon-driven marine hazards.https://www.mdpi.com/2077-1312/13/1/5typhoon storm tidenonlinear couplingconvective termshear stressnumerical simulationdecision tree model |
| spellingShingle | Fanjun Chen Kaixuan Ding Zhilin Sun Effect of Nonlinear Factors on Typhoon-Induced Storm Surges Journal of Marine Science and Engineering typhoon storm tide nonlinear coupling convective term shear stress numerical simulation decision tree model |
| title | Effect of Nonlinear Factors on Typhoon-Induced Storm Surges |
| title_full | Effect of Nonlinear Factors on Typhoon-Induced Storm Surges |
| title_fullStr | Effect of Nonlinear Factors on Typhoon-Induced Storm Surges |
| title_full_unstemmed | Effect of Nonlinear Factors on Typhoon-Induced Storm Surges |
| title_short | Effect of Nonlinear Factors on Typhoon-Induced Storm Surges |
| title_sort | effect of nonlinear factors on typhoon induced storm surges |
| topic | typhoon storm tide nonlinear coupling convective term shear stress numerical simulation decision tree model |
| url | https://www.mdpi.com/2077-1312/13/1/5 |
| work_keys_str_mv | AT fanjunchen effectofnonlinearfactorsontyphooninducedstormsurges AT kaixuanding effectofnonlinearfactorsontyphooninducedstormsurges AT zhilinsun effectofnonlinearfactorsontyphooninducedstormsurges |