User interfaces for geospatial information are the tools by which users interact with and explore that information. The provision of appropriate interface tools for exploiting the potential of contemporary geospatial visualization products is essential if they are to be used efficiently and effectively. This paper addresses issues and challenges in interface development and usage that are ident...

Google Earth (GE) and related open geospatial technologies have changed both the accessibility of and audience for geospatial information dramatically. Through data rich applications with easy to use interfaces, these technologies bring personalized geospatial information directly to the non-specialist. When coupled with open geospatial data standards, such as Web Map Services (WMS), Web Featur...

With the advance of the World-Wide Web (WWW) technology, people can easily share content on the Web, including geospatial data and web services. Thus, the “big geospatial data management” issues start attracting attention. Among the big geospatial data issues, this research focuses on discovering distributed geospatial resources. As resources are scattered on the WWW, users cannot find resource...

Spatial Data Infrastructure acts as a fundamental platform to make geospatial data exchangeable to supply geospatial information service widely. China has paid great attention to construct the Digital China Geospatial Framework (DCGF). This NSDI has four layers at National, Provincial, Municipal and County level. DCGF has five components: data sets, technology, legal support and standards, coor...

The creation and management of geospatial data is always tedious requires huge budget, time and manual efforts. Therefore, the future of several important services including location-based services and disaster information system, which need geospatial data remains a matter of concern. Expert geoportal system (EGPS) is a tool based on a sophisticated approach for providing diverse geospatial se...

Today, the discovery and sharing of geospatial information over the Web presents some difficulties which have not yet been solved. News distribution through website content was simplified by the use of Really Simple Syndication (RSS) and Atom syndication formats. This paper exposes an extension of Atom to redistribute references to geospatial information in a Spatial Data Infrastructure distrib...

In this paper, we present FAGI-tr, a tool for aligning RDF vocabularies with respect to their geospatial aspect. The tool provides a framework for (a) loading a source and a target geospatial RDF dataset, (b) identifying vocabularies for representing geospatial RDF data, (c) selecting, from both datasets, the representations to be considered for processing, (d) selecting a target vocabulary and...

Towards geospatial semantic search: exploiting latent semantic relations in geospatial data Wenwen Li a , Michael F. Goodchild b & Robert Raskin c a GeoDa Center for Geospatial Analysis and Computation, School of Geographical Science and Urban Planning, Arizona State University, Tempe, AZ, USA b Center for Spatial Studies (Spatial@UCSB), University of California, Santa Barbara, CA, USA c NASA J...

In the recent past there have been significant research and industrial efforts to support access to large amount of geospatial data sources. Examples of industrial efforts include different data access standards proposed by the Open Geospatial Consortium (OpenGIS)1 and the availability of satellite imagery and other data on websites, such as TerraServer2. In order to better understand the resea...

River discharge is an important issue to be monitored because of its significant influence on environmental systems, on human lives for water resource exploitation, and hazards related to floods and landslides. In this context, we have designed and developed a web-based Geoportal for hydrological applications that integrates geospatial processing services and web mapping viewers to provide an i...