93 results about "Storm surge" patented technology

The invention relates to a historical data based intelligent early warning system for typhoon and flood, comprising a database system used for storing historical data, predicting data and GIS base map data, a neural network prediction server, a WEBGIS graph display system and a WEB server, wherein the neural network prediction server is used to process the historical data to obtain prediction data which is then stored in the database system; the WEBGIS graph display system displays data in the database system graphically and publishes the data through the WEB server; the WEB server receives prediction request data inform a user client and displays the corresponding prediction result to the user in the form of WEB. Compared with the prior art, the invention has the characteristics of high prediction accuracy, intuitive display of the current storm surge information and forecasting of storm surge information. Besides, the historical data based intelligent early warning system for typhoon and flood can be taken as an auxiliary decision making system for forecasters to forecast storm surges.

The invention discloses an ocean environment visualization method. Based on the combination of the ocean environment three-dimensional scene and a parallel coordinate method, the method comprises the concrete steps of modeling the three-dimensional scene and the parallel coordinates of ocean environment; secondly establishing a multi-dimensional element integrated rendering and interactive extraction algorithm based on the three-dimensional scene and the parallel coordinates of the ocean environment; thirdly expressing the multi-dimensional ocean environment data linked features and cluster features. The method can be used for knowledge discovery of ocean phenomena such as storm tides, red tides, ENSO circulation and the like, and provides a new idea for understanding, rebuilding and discovering ocean phenomena.

The invention discloses a time sequence analysis-based storm surge disaster early warning system, which comprises a database server, an early warning prediction model analysis module, an assistant decision making system, a Web server and a management user, wherein the database server stores historical monitoring data, real-time monitoring data, basic geographic information data, emergency plan data, related calculation model data and early warning data; the monitoring data and the early warning data are time sequence data; the early warning prediction model analysis module is mainly used for preprocessing the data, piecewise linearly expressing the time sequence data to fulfill dimension reduction and compression aims, performing similarity matching on the time sequence data and the historical monitoring data, and performing disaster early warning according to a similarity matching result; and the assistant decision making system displays assistant decision making information on the basis of geographical graphic information, and displays the assistant decision making information to a client of the management user through the deployed Web server.

The invention relates to a tide predicting method for the tide is influenced by various factors, including cyclical factors, such as tidal generation force, and non-cyclical factors, such as wind power, atmospheric pressure, coast characteristics, rainfall, dip angles of the lunar orbit and the like. The predicting accuracy of the traditional harmonic analysis method is influenced by partial tide number, and the traditional harmonic analysis method cannot analyze the influence of non-cyclical factors; the artificial neural network method developed recent years overcomes the defect that the non-cyclical factors cannot be predicted by the harmonic analysis method to a certain extent, but has great data volume required by study training samples and wide involve range, can cover various possible conditions, but has less station historical data of non-cyclical factors. The invention provides a predict model, wherein factors which influence tide non-cyclically, such as wind directions, rainfall, storm surge, coast characteristics and the like, can be fused into the model, and small sample data can receive more accurate results. In the method, a support vector machine (SVM)-based predict model is established, wherein, an SVM toolbox is imported into MATLAB 7.8; training sample data is trained by utilizing svmtrain function; the formed model is tested by using a test sample svmpredict function; and the trained and tested data can predict the tide in the same tide test station.

The invention belongs to the field of goaf grouting visualization simulation. On the basis of a three-dimensional geometrical geological information model, a three-dimensional Bingham fluid mathematical model is established, and the three-dimensional dynamic overall process simulation of storm surge flood routing is realized according to a grouting numerical simulation result. In order to fulfill the aims, the invention adopts the technical scheme that a goaf grouting dynamic overall process simulation method based on numerical simulation comprises the following steps of: (1) establishing a grouting three-dimensional network model which is coupled with the complex stratum information of a goaf; (2) establishing a goaf grouting three-dimensional mathematical model; (3) dynamically simulating the grout flowing of the goaf; (4) performing goaf grouting dynamics calculation; and (5) performing post-processing and visualization output on three-dimensional dynamic overall process simulation. The goaf grouting dynamic overall process simulation method based on the numerical simulation is mainly applicable to the field of goaf grouting in an engineering technology.

A buoy for use in reducing the amplitude of waves in water and a system making use of plural buoys to create a floating breakwater. Each buoy is arranged to be constrained, e.g., connected to an anchor, and comprising a body e.g., a cylindrical member having at least one outwardly projecting fin, that is configured to be resonant and impedance matched. The buoy and anchoring approach allows for self-tuning to the chances in the wave spectrum due to the tidal or storm surge induced changes in the water depth. The body of the floating buoy is not limited to circular cylinder, and could be square, hexagonal, triangular, etc but must have at least one exterior mounted fin.

The invention discloses a method for improving storm surge disaster risk predication accuracy. The method comprises the following steps that a storm surge disaster scene is built based on a scene analysis method; a storm surge disaster three-dimensional numerical simulation method is provided; a multi-mode multiobjective flood refuge optimal path selection model is built; the provided storm surge disaster three-dimensional numerical simulation method specifically comprises the steps that (1) the three-dimensional network model of the regional terrain is built; (2) the SST k-omega flood routing three-dimensional turbulent model of a coupling VOF method is built; (3) a three-dimensional risk drawing is drawn based on the three-dimensional numerical simulation result. The factuality and the visualization effect of flood dynamic real-time flowing and disaster time distribution are increased; a multi-mode multiobjective emergency path decentralization model is used for further improving the completeness and reasonability of an emergency refuge system, a disaster contingency plan is effectively made, and a multi-module coupling, high-completeness and high-practicality storm surge disaster risk analysis system is provided.

A water or flood control and containment system is provided having foundations, sealed bases, supporting structure, and pumping system that gives the user control over water containment and movement either to reduce the water hazard or to store water. The bases are secured and sealed to paved surfaces with foundations that have been preset into the street or other prepared foundation. When deployed on multiple adjacent streets, roadway levee creates a compartmented barrier containment system that mitigates flooding and storm surges. The invention is to be removed and stored off site when not in use.

The invention relates to an ocean disaster early warning system, in particular to an ocean storm surge disaster early warning system. The invention combines a multidimensional ocean storm surge disaster monitoring device, a ground receiving device and embedded subsystems are adopted to control the monitoring device, a data storing device and a center system are arranged at far end to monitor each embedded subsystem, and the center system is connected with a relay and receives data of sensors embedded in bridge, road and mass transportation equipment. Communication and network technology are utilized to transmit multisource multitemporal heterogeneous storm surge disaster data and image which are obtained by the monitoring device to the ground receiving device, preprocessing is carried out by the embedded subsystem, then the data and image are transmitted to the data storing device, and finally data mining is carried out by the center system; according to route of typhoon, wind speed and wave speed, area of influence and loss estimation, massive computing is carried out; and the center system also judges the condition of traffic road according to urban traffic data acquired by an induction coil and a radio frequency identification device in a traffic information acquisition system, thus providing a real-time and reliable scheme for vacating personnel in disaster-affected area and providing accurate prejudgement for preventing and reducing disaster. Early warning result of the system can be checked by virtue of a webpage or PDA, and visual auxiliary decision information can be provided for storm surge disaster.

A method of predicting the destructive capacity of a tropical cyclone based on a new Wind Destructive Potential (WDP) and Storm Surge Destructive Potential (SDP) scales which provide a manner to rate the severity of hurricanes and typhoons, based on information provided in operational forecast and warning products, experimental wind field products, or gridded numerical weather prediction model outputs. These new scales are formulated to be consistent with the physical mechanism through which tropical cyclones impact coastal communities through wind, storm surges and wave damage.

The invention relates to a GIS-based marine disaster area extraction method. The method comprises the following steps: first, performing spatial matching alignment on a plurality of overlapped orthographic remote sensing images taken by an unmanned aerial vehicle by use of an SIFT algorithm to realize image splicing and get a wide-angle remote sensing panorama image; then, establishing the pixel coordinates of the remote sensing images, realizing geometric correction based on the coordinate transformation relationship between the coordinates of the pixels of the remote sensing panorama image in an image coordinate system and the ground coordinates, and superposing the geometrically-corrected remote sensing panorama image on a GIS platform through geographic coordinate location; and finally, implementing a red tide / oil spill identification and detection technology and vector data superposition operation before and after disaster on the remote sensing panorama image to realize red tide disaster and oil spill location and query and area measurement as well as typhoon and storm surge location and query and disaster area measurement. The method provides real-time field data for marine forecasters in rapid alert, and improves the ability of marine dynamic monitoring and disaster prevention and mitigation emergency monitoring.

The invention turns a hurricane / tropical cyclone into a tropical rainstorm by spraying a super coolant such as liquid oxygen, or liquid hydrogen, or liquid nitrogen, or other super cold liquid gas around the top of the eye wall and additionally if needed, into the front of the eye wall using aircraft with pre-measured amounts of super coolant. Based on actual results, a real time computer system will be developed to enable communications between aircraft and control the amount of super coolant dispersed. The result of the invention will reduce / eliminate the damage to life and property due to high winds and storm surge as well as the staggering costs for rebuilding.

Devices, methods and systems for wave and water level measurement using a single DC (direct current)-coupled CW (continuous wave) Doppler radar for detecting water elevation changes in time when installed up to several meters from the water surface. The radar is wireless and can stream continuous data to a local PC (personal computer) or base station in range of its radio. The radar can sample up to 40 Hz and can run on batteries for continuous sampling. The radars can include multiple radar configurations of 1, 2 and 4 radar configurations. Applications for this radar can include the measurement of beach run-up, free surface elevation in tidal zones, and storm surge elevations near bridges and critical infrastructure during storm events.

The invention discloses a method for quantitatively pre-evaluating the direct economic loss of storm surge disaster of typhoon, which comprises: (1) using a statistical method as a mathematical tool to establish a model, searching for statistical rules from a certain number of historical disaster samples, and establishing a statistical mathematical model; and (2) inputting various parameters into the statistical mathematical model for evaluation before the oncoming of storm surge of typhoon. The invention further combines the method and an information issue platform to realize computerization and can evaluate the scope of possible direct economic loss caused by typhoon through the introduction of numerical mode calculation prior to the period of being influenced by typhoon. The quantitative pre-evaluation of the direct economic loss caused by typhoon and storm surge particularly has important realistic meaning, and the application of the method is favorable for the development of coastal disaster prevention and reduction work in storm surge disaster hotspots of China.

The invention provides a correction method for a station wave height prediction result. According to the method, based on historical data of a to-be-corrected station before an arbitrary moment T, a weight mapping matrix W and an offset matrix B are self-defined to train an extreme learning machine model, and the weight mapping matrix W, the offset matrix B and an output weight matrix P after training are obtained; and for a to-be-corrected moment after the arbitrary moment T, the weight mapping matrix W, the offset matrix B and the output weight matrix P are adopted to predict a correction error, and the correction error is adopted to correct the value prediction result. Through the multi-factor correction method, the error between a predicted value and a truly observed value can be reduced, the accuracy of the value prediction result is improved, and working efficiency is improved. The method has important significance for timely predicting an ocean storm surge disaster, effectivelycarrying out disaster prevention and reduction work and ensuring the safety of life and properties of people.

The invention discloses a typhoon storm surge risk assessment method and a system based on an ArcGIS platform. The method has the advantages that compared with a traditional storm surge risk zoning strategy, the risk quantitative evaluation strategy is provided, and quantitative calculation is conducted on each factor (H, E, V and R) influencing the final risk value of the area to be evaluated. Therefore, the final risk value can be measured from two perspectives, one is a traditional risk level form, the other is an innovative quantitative mode, and a specific risk value can be obtained. Andthe method has important significance for disaster prevention, disaster reduction and disaster relief deployment. Meanwhile, only three parameters are considered at most in traditional risk division,an algorithm is provided for detailed calculation of each parameter, meanwhile, the disaster prevention and reduction capacity is considered, and therefore the completeness and reliability of an evaluation result are further improved.

The invention relates to a data analysis management system based on a storm surge prediction model, and the system comprises a storm surge condition information database, a visual management terminal and a data graphical analyzer, wherein the storm surge condition information database is used for storing the surge level, air pressure, wind force, wind direction and ocean current at a surge monitoring station, and employing a mode of SQL SERVER network database. The visual management terminal is used for carrying out the visual representation of related information of the system, brings convenience to an operator for management and data analysis, and mainly comprises a system management module, an observation station information module, a surge level information module, a typical storm surge information module, a surge prediction module, and a storm surge knowledge module. The data graphical analyzer is an analysis tool which is designed based on the GUI of MATLAB, has mathematical analysis algorithms of data clustering, regression analysis and deviation analysis and comprises a plurality of drawing modes. The system facilitates the data analysis and visual management.

The present invention belongs to the storm surge prediction field and relates to a multi-path typhoon storm surge fast prediction method and system. According to the multi-path typhoon storm surge fast prediction method and system of the invention, on the basis of the current typhoon information of a current typhoon, a circular area affected by the typhoon after first time can be obtained; the circular area is divided into a plurality of grid sub-regions; a plurality of predictive moving paths of the current typhoon are obtained according to the latitude and longitude coordinates of the vertices of all the grid sub-regions and the current typhoon information; and storm surge data corresponding to the latitude and longitude coordinates of the center of the typhoon in a process in which the typhoon moves from a location where the center of the current typhoon is located along each predictive moving path in the first time according to a preset time interval and on the basis of a preset local information database. With the method and system of the invention adopted, the accuracy of the typhoon storm surge prediction of each predictive moving path can be improved; and requirements for storm surge refined prediction and government disaster prevention decision making can be satisfied.

A method and system for raising an existing structure without use of electrical power, such as a home, during a flood condition in which pilings are positioned adjacent to an existing foundation. Pile guides are attached to the structure and are used to receive and guide the pilings during raising of the structure. A buoyancy layer is formed below the floor of the structure. During a flood condition, the buoyancy layer raises the entire structure upwardly along the pilings to support the structure above the flood waters.

The present invention provides a fender system that is applied to a dock piling or solid faced bulkhead in order to prevent damage to a marine vessel while the vessel is moored to a fixed or floating dock, or dock piling, or solid faced bulkhead. The fender is designed to uniquely rise and fall with the level of the tide such that the fender is always in the most suitable position for protecting the vessel's hull from coming into direct contact with the piling or bulkhead. Thus, this system is useful in waters in which there is a constant ebb and flow of the tide and is especially useful in areas experiencing a storm surge.

The invention discloses a typhoon elliptical wind field parametric simulation method based on remote sensing image features. The invention relates to the field of satellite meteorological remote sensing information technology application. Through a remote sensing image analysis means and in combination with least square method ellipse fitting, ellipse center coordinates, ellipse long axis and short axis lengths and included angle parameters of the ellipse long axis and the x axis in the positive direction of the sea surface ellipse typhoon wind field are obtained through simulation, and the maximum wind speed space distribution range of the sea surface wind field in different directions is given. The method has the characteristics of simple operation and good real-time performance, the space-time heterogeneity distribution characteristic of the maximum wind speed radius of the sea surface wind field can be simulated, the obtained maximum wind speed point fitting ellipse can effectivelydescribe the space-time distribution range and orientation of sea surface wind field energy, and more accurate external drive can be provided for simulation of ocean dynamic processes such as storm surge and sea waves.

The present invention provides a typhoon disaster assessment system. The system comprises: a disaster event simulation and intensity calculation module, used for simulating generation of a random typhoon disaster event and calculating a disaster intensity of the random typhoon disaster event; an engineering module, used for establishing a plurality of vulnerability functions targeted at various disaster types and building structure systems and calculating a total loss corresponding to the random typhoon disaster event; and a loss contemplation module, used for converting the total loss corresponding to the random typhoon disaster event into an insurance loss in a preset insurance calculation manner. The system provided by the present invention provides a scientific, practical, complete and secure huge disaster loss contemplation model for huge disaster risk management, and it is especially of important reality significance to make a proposal of performing a quantified pre-assessment on the direct economical loss caused by the typhoon and storm surge.

A seawall safety real-time assessment method and special device are disclosed, which has at least one alarm device, a computer, a hydrological collection device or storm surge prediction model. The alarm device is used for early warning of seawall overflow or breakwater, the computer is connected with the alarm device. The computer is also connected with the hydrological collecting device or receives the storm surge forecast value. The computer can process the hydrological data collected by the hydrological collecting device or the received tidal level and wave forecast value and decide whether to overflow or break the dike according to the judgment index. The computer controls the alarm device according to the decision result. The invention can carry out real-time evaluation on the seawall safety under the action of the storm surge, realize the prediction and alarm of the seawall safety, and has high alarm accuracy, thereby providing a basis for starting the emergency management workin advance and reducing the loss of the marine disaster.

The invention discloses a coastal city multi-source flood numerical simulation method based on GIS grid operation. The method is provided with a parameter setting module, a surface data input module,a hydrological multi-boundary condition input module, a flood numerical real-time simulation module and a visual output module. The method comprises the steps of setting simulation basic parameters inthe parameter setting module; inputting the basic geographic information, including topographic data, land types, soil types and pipe network data, of a research area into the earth surface data input module, wherein a multi-source flood sequence file input into the hydrological multi-boundary condition input module comprises three flood disaster types including rainstorm waterlogging, coast storm surge and river flood; adopting the visual output module for setting the format category of an output file; and starting an operation flood numerical value real-time simulation module, and displaying a multi-source flood numerical value simulation result in real time. The method is provided based on the GIS grid operation. The method simulates and predicts the disaster situation of coastal citymulti-source flood collision.

A constrained buoy experiencing vortex-induced, in-line and transverse angular motions and designed to absorb and attenuate the energies of streams, rivers and localized ocean currents is described. Referred to as a Finned-Spar-Buoy (FSB), the buoy design can be considered an exoskeleton, in that vertical fins are externally mounted on a vertical cylindrical float. The fins increase the drag coefficient by enhancing the wake losses. The FSB operates as a single unit or as a component of an array, depending on the application. The FSB can adjust to high-water events caused by tides, storm surges or spring-melting runoffs because the FSB can move axially along a center-staff which is attached to an anchor pole at a pivot point. The buoy-staff system is allowed to rotate in any angular direction from the vertical, still-water orientation of the center-staff. The FSB has a relatively small diameter-to-draft ratio, analytically qualifying the buoy as a slender-body.

The invention discloses a visual storm surge-sea wave coupling forecasting method, which comprises the following steps: crawling and analyzing multi-thread data released by a meteorological departmentto form a forecasting text, a picture and forecasting data; storing prediction data in a PostgreSQL database; when a data increment is generated, enabling a data driving thread to send data and a starting command to a storm surge-sea wave coupling mode, starting operation of the coupling mode automatically, and after operation of the storm surge-sea wave coupling mode is completed, processing overcalculated data and outputting the processed data to a visual data resource queue;; and presenting a final result on the ocean sphere through a Leaflet-based particle visualization method and a raster data layer drawing method. According to the forecasting method disclosed by the invention, an automatic operation coupling mode can be realized, the efficiency of a forecasting system is improved, and a forecasting result is more visual and friendly.

The invention discloses a method and a system for establishing storm surge overtopping and flooding analysis based on a GIS (Geographic Information System) technology, and the method comprises the following steps: firstly, reconstructing historical tropical cyclone data of a research area by utilizing constructed geographic information and a historical typhoon database and adopting a typhoon windfield empirical model; secondly, determining a calculation range of a research area, and establishing a storm surge refined numerical model based on an ADCIRC ocean mode; and finally, after the reliability and accuracy of the numerical model are determined, constructing an extreme tropical cyclone of the research area, designing the maximum water increase caused by the extreme tropical cyclone tomeet the astronomical high tide level, performing coupling calculation to obtain the possible maximum storm surge water level of the simulation area, and calculating the overtopping or collapsing water flow of the storm surge in combination with the seawall elevation. The method has the advantages that on the premise that the water flow calculation during storm surge overtopping and dike collapsing is increased, the volume method is adopted for calculating the water level of the submerged area, the GIS technology is utilized for building the overtopping and submerging analysis model, and the overtopping and submerging simulation result is visually displayed.

The invention relates to an electromagnetic scattering calculation method for dynamic sea surface in a storm-surge mixed mode. The electromagnetic scattering calculation method includes the following steps: S1, performing linear sea surface geometric modeling from a sea wave spectrum in a storm-surge mixed mode, wherein the sea wave spectrum comprises a main wave system and an auxiliary wave system; S2, performing geometric modeling on sea waves in a storm-surge mixed mode according to a non-linear sharp wave model; S3, calculating an electromagnetic scattering coefficient of the sea surface in a storm-surge mixed mode by a second-order low-slope approximation method; S4, calculating scattering coefficients under different sea conditions according to a sea spectrum model in a storm-surge mixed mode, the non-linear sharp wave model and the second-order low-slope approximation method, and verifying wind wave spectrum based linear sea surface electromagnetic scattering coefficients subjected to second-order low-slope approximation calculation according to a precise numerical algorithm and a multi-order-moment induction method. The electromagnetic scattering calculation method has the advantages of accuracy and effectiveness.