Abstract
Abstract. The research is aimed at the development and testing of the system for operational river flood forecasting. The system is based on the use of a complex of hydrological and hydrodynamic models, as well as in situ and satellite data integrated processing, and implemented on the basis of a service-oriented architecture. A distinctive feature of the system is the complete automation of the entire simulation cycle - from loading initial data to interpreting results, visualizing and alerting interested parties. The theoretical basis for ensuring the coordinated functioning of all system components is the qualimetry of models and polymodel complexes. The practical implementation is carried out using open codes, free software and GIS platform «RegionView». All the complexity associated with the use of heterogeneous geographically distributed information resources is hidden from the user. This allows the system to be used not only by specialists in GIS, IT or relevant subject area, but also by other users interested in the results of flood monitoring and forecasting - emergency services, local authorities, commercial organizations and citizens. The described technologies and the system of operational flood forecasting were tested in the Russian Federation on the Northern Dvina River, from the city of Velikiy Ustyug to the city of Kotlas in 2014-2019. Given test results prove that the application of such an approach ensures full implementation of the required functionality of operational flood forecasting systems, the fulfilment of the basic requirements for such systems and also indicate the possibility of a widespread use of such systems authorities and emergency services.
Highlights
GENERAL STRUCTURE OF THE INTEGRATED SYSTEMThe proposed automated flood forecasting technology is based on the concept of a multi-model description of complex natural objects
Approaches to creating most of the considered information technology solutions are based on the results presented in the previous research
The proposed approach of integrated use of geographic information systems (GIS), remote sensing data and a set of models which was implemented on the basis of service- and event-oriented architectures has demonstrated its effectiveness in solving the problems of monitoring and operational flood forecasting
Summary
The proposed automated flood forecasting technology is based on the concept of a multi-model description of complex natural objects. All the complexity associated with the use of heterogeneous geographically distributed information systems is hidden from the user due to the full automation of the computational process This allows the system to be used by specialists with a high level of knowledge in the field of GIS and information technology, and by specialists in the subject area (hydrology) and all other users interested in the results of flood forecasting (emergency services, executive authorities, commercial organizations and citizens). To prepare initial data (water levels and expenditures in predetermined sections of the river) for loading directly into hydrodynamic models the special service was developed This service is based on a multi-model approach and the concept of choosing mathematical model that most adequately describes and forecasts the hydrological situation for a specific time interval. The choice of a specific model is determined by the specific conditions of the flood
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