![]() Section drawings and mosaics as Geotiff images that receive height values from the underlying TINs. Plan orthophotomosaics as Geotiff images that receive height values from the underlying Grids, and 9. Excavation unit sections as 3D polygons, 7. Section layers as vertical multipatch surfaces, 6. Excavation units as closed multipatch entities, 5. Figure 2: Example of an MS Access data input form (Excavation Unit Sheet) Figure 3: Spatial data classes included in the database: 1. In both cases, the aim was primarily to integrate the metadata within the dataset in an attempt to ensure future compatibility and interoperability and also to document the data structure of the system (Katsianis 2012, Katsianis et al. In addition, all spatial data collections have been complemented with geographical metadata that follow the ISO19115 standard to facilitate potential incorporation of the excavation archive contents into wider geographic data repositories on the Web. XML) without loss of meaning (CIDOC-CRM export compatible). This implementation was meant to provide the ability to export the data schema and all data in a codified format (i.e. The contents of the spatial database follow the semantic model CIDOC-CRM (ISO 21127), which has been implemented using stereotypes during the design stage of the data schema. Using the three-dimensional visualization environment of ArcGIS (ArcScene), all data can be retrieved, visualized, explored and aggregated (Fig. Once the geometry is stored in a database every spatial object is linked to all related descriptive information. excavation features) involve intermediate transformation processes using other 3D modelling applications (e.g. drawings as 3D lines draped over a 2.5D surface). ![]() finds depicted as 3D points), while in others various intermediate procedures are included (e.g. In many cases data processing is a relatively simple process (e.g. All primary spatial data are processed to form the 3D geometry of each excavation feature, which is then embedded in the database. ![]() A series of surveying methods that include photogrammetry techniques allow for direct collection of spatial measurements. Primary data input is facilitated through recording forms accessed from within the MS Access environment (Fig. The database supports the storage of the geometrical, descriptive and chronological data providing grouping mechanisms and further capacities for adding secondary information during the course of stratigraphic analysis (Fig. The backbone of the application is the spatial database, which follows the architecture of ESRI’s Personal Geodatabase (pGDB) coupled with the use of MS Access. The resulting application uses ESRI’s ArcGIS for the management, processing, visual exploration, spatial analysis and aggregation of excavation data. Figure 1: Example of the Geodatabase schema The archaeological excavation project at the prehistoric site of Paliambela Kolindros provided the case study. This research focused on the digital management of archaeological information through the combination of GIS technology and three-dimensional (3D) cartographic representation. Funding was provided by the Greek Ministry of Development – General Secretariat for Research and Technology under the EU Operational Programme “Competitiveness”, Measure 8.3, Action 8.3.1: Researchers Support Program 2003. The application that manages the Paliambela Kolindros digital archive is the result of a research project entitled ‘‘Digital System for the Interactive Visualization and Spatio-temporal Interpretation of Archaeological Data’’, which was launched in November 2005 and was concluded by early 2009. As part of the exchange of expertise between the ADS (Archaeological Data Service) and AUTh (Aristotle University Thessaloniki, Greece) in the framework of ACE (Archaeology in Contemporary Europe, Professional Practices and Public Outreach) Network, it was decided to explore the possibilities of using part of the archive to indicate potential problems and define necessary procedures required to prepare data from complex archaeological information systems for long-term digital data preservation. It comprises a complex archive that incorporates a large sum of information held in different data types. The creation and management of the digital archive of the Paliambela Kolindros Archaeological Project is based upon GIS technology. Images are copyright the Paliambela Kolindros Archaeological Project. This case study was produced as a component of a two week work placement during March 2012 at the ADS funded by the Archaeology in Contemporary Europe ( ACE) mobility bursary scheme. Preparing the Paliambela Kolindros Archaeological Project digital archive for long term preservation.
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