An online spatio-temporal sudden pollution simulation system for the Songhua River, China

The Songhua River Pollution Control Project is one of the most significant water-related environmental pollution control schemes in Northeastern China. This paper details the requirements, architecture, and main components of an online river sudden pollution simulation system (RSPSS) for scientific planning and decision making for a complicated natural river network. On the basis of a service-oriented method and spatiotemporal simulation technology, the following components are developed: multi-platform, multi-level, dynamic, and flexible data services; task services that can be used by other online ArcGIS Server Silverlight Projects; and integrated third-party hydrodynamic and water quality models, which can simulate complex river networks under natural hydrological and climatic conditions online. With the RSPSS, spatial and non-spatial datasets and functions are seamlessly integrated from distributed sources by standard services. Thus, this system can support effective cross-regional and cross-departmental decisions. A study of a real-world implementation of the suggested system involving the historical sudden pollution of the Songhua River based on the RSPSS is also presented.