Method for judging influence boundary of typhoon spatio-temporal variation in near-shore sea area

By constructing a coupled hydrodynamic and sediment numerical model and introducing long-term geological sedimentary records, the problem of low accuracy in determining typhoon impact boundaries was solved, enabling dynamic scouring and deposition early warning under future climate change and improving the reliability of typhoon impact boundaries.

CN122197729BActive Publication Date: 2026-07-14TIANJIN RES INST FOR WATER TRANSPORT ENG M O T +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
Filing Date
2026-05-11
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing technologies, when assessing the impact boundaries of typhoons on nearshore waters, fail to effectively quantify the differences in sediment initiation and net sediment transport under wind conditions and windless environments. They also lack long-term geological sedimentary records for verification, resulting in low accuracy in determining impact boundaries and an inability to dynamically predict erosion and deposition warning boundaries under climate change.

Method used

A coupled hydrodynamic and sediment numerical model was constructed. By combining historical meteorological data and core geological sedimentary records, the net sediment transport was calculated by simulating the water movement and sediment initiation process of tropical cyclone samples. The cyclone parameter adjustment amount was set and the scouring and deposition warning boundary of future scenarios was deduced. Long-term geological records were introduced for physical cross-validation.

Benefits of technology

It has improved the accuracy of determining the hydrodynamic impact boundary of nearshore waters, enabled dynamic erosion and sedimentation early warning under future climate change scenarios, and enhanced the reliability of the comprehensive impact boundary of typhoons.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of marine disaster assessment, and discloses a method for judging the influence boundary of typhoon spatiotemporal change in nearshore sea area, comprising the following steps: obtaining historical meteorological data to construct a representative tropical cyclone sample set; establishing a structureless grid water dynamic sediment coupling numerical model to calculate the spatial distribution of net sediment transport and demarcate the sediment transport boundary range; adjusting the meteorological parameters and translating the path of the cyclone sample set, obtaining the scouring and silting change distribution data based on the translated path by using the model, and extracting the future scenario scouring and silting warning boundary; analyzing the nearshore core storm deposit record data and regional wind field data, calculating the sediment record preservation potential percentage to define the high potential area; and finally, layering the sediment transport boundary range, the future scenario scouring and silting warning boundary and the high potential area to construct the influence boundary of typhoon spatiotemporal change in nearshore sea area. The present application introduces geological record verification of simulation results, and improves the reliability of boundary judgment.
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