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From the perspective of a Regional Geological Survey, INSPIRE implementation is an opportunity to overcome the handicap of working with multiple data models, usually implemented as CAD data sets, replacing them with interoperable data bases derived from UML models and schemas. Before starting the necessary reengineering process to achieve this goal, a comparative analysis of existing geological data was performed. As a result based on the relationship existing between geological information resolution and map scale, it was concluded the convenience of assimilating as an INSPIRE data collection each of the geological maps series published. With the aim to proceed from general to detailed information, our organization decided starting the transformation effort with the Geological data collection 1:250 000 of Catalonia, following with Geological data collection 1:50 000 of Catalonia, and the Geological data collection 1:25 000 of Catalonia. This workflow shows how small scale data collection data is used as a core to make larger scale geological data interoperable. Consequently, the first challenge was to model the geological information contained in two of the geological maps published at 1:250 000 scale (comprising geology and structure). Taking the core model of the INSPIRE Technical Guidelines on Geology as a basis for developing our new model, and maintaining the conformity with the corresponding Implementing Rules, the team integrated a number of extensions based on GeoSciML to cover diverse aspects related to the level of detail of the information. Additionally, new attributes were added to avoid information loss. Once designed the conceptual UML model as an INSPIRE customization, the corresponding application schema and feature catalogue were automatically generated using the Enterprise Architect software. The geological features types included in the ICGC geological model constitute a selection of those present in the GeologyCore (INSPIRE) and GeoSciML schemas, and maintain a dependency relationship with them. The customized extensions were added afterwards in order to satisfy all the requirements from our organization. Aiming to achieve INSPIRE compliance, all mandatory content foreseen in INSPIRE is included. In order to support our users, the model has been documented not only in English language, but also in Catalan and Spanish. This experience shows the benefits of close cooperation between experts in different fields (geologists, data modelers, etc.), with similarities to the work of the INSPIRE Thematic Working Group, which proved to be a keystone for achieving Geology interoperability.
Topic Area: [2.9] Challenges and approaches to standardization of data and interoperability of systems. Abstract Type: Oral Presentation
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