Development of a Community Hydrologic Information System

摘要: Over the next decade, it is likely that science and engineering research will produce more scientific data than has been created over whole of human history. The successful use these to achieve new breakthroughs depend on ability access, integrate, analyze large datasets. way are organized manipulated either enables or inhibits analyses can be performed. Consortium Universities for Advancement Hydrologic Science, Inc (CUAHSI) developing information technology infrastructure support advanced hydrologic analysis education. CUAHSI Information System (HIS) an internet based system sharing data. It comprised databases servers connected through web services as well software publication, discovery access. HIS founded upon model observations at stationary points supports its services. Observations Data Model (ODM) provides community defined semantics needed allow information. Following this uniform semantic model, provide access multiple disparate sources: from national repositories such USGS National Water (NWIS) USEPA Storage Retrieval (STORET), distributed published by academic researchers groups their own in a standard format. These registered central website, where they become searchable accessible centralized tools. utilizes both XML relational database schema transmission storage respectively. WaterML (Water Markup Language) used underlies machine communications, while ODM implemented persistent storage. Web stored other application Excel, MATLAB ArcGIS have Simple Object Access Protocol (SOAP) capability. Desktop local repository set tools also facilitates integration processes. A significant value desktop derives capability them within user's preferred environment, using semantics, rather requiring user learn software. This paper describes developed part provide: (1) (ODM); (2) internet-based Services consistent language, called WaterML; (3) Indexing Metadata Catalog; (4) Discovery federated map thematic keyword search system. combination capabilities creates common window water United States unlike any existed before, extensible worldwide.