A prototype HGIS for managing earthquake data from historical documents

Figures & data

Table 1. Entities of the proposed relational model.

Entity	Description	Spatial entity
Event	Specific seismic event	Yes
Damaged_places	Places hit by a seismic event	Yes
Place_names	Historical name or alternative names of the locations hit by a seismic event
Scientific_studies	Studies on a specific seismic event
References	Sources regarding a specific seismic event
Witness_records	Evidence and/or observations regarding a specific seismic event, given by coeval witnesses
Witness_routes	Travel itineraries followed by specific historical persons who left records on the events	Yes

Figure 1. Conceptual model of the proposed relational database, represented as an Entity - Relationship Diagram (ERD); spatial entities are in grey boxes.

Figure 2. ERD including information of the logical model for the proposed data archive, designed using SQL Power Architect Community Edition. Green: georeferenced entities; orange: reference documents; light blue: junction tables (to implement the case of many-to-many relationships).

Figure 3. Plot of the epicentre (star) and the macroseismic intensities (dots) related to the 27 April 1894 event according to the study by Makropoulos and Kouskouna (1994). General-Karte des KönigreichsGriechenland © British Library Board.\

Figure 4. Plot of the epicentre (star) and the macroseismic intensities (dots) related to the 27 April 1894 event according to the study by Albini and Pantosti (2004). General-Karte des KönigreichsGriechenland © British Library Board.

Figure 5. The witness routes geo-referenced on the General-Karte des Königreichs Griechenland, edited in 1885. General-Karte des KönigreichsGriechenland © British Library Board.

Figure 6. Results of the selection of considered data sources by the two seismological studies performed on a specific earthquake, in the example the 20 April 1894, event in Locris.

Figure 7. Results of the selection of considered data sources by a specific seismological study, that includes both previous seismological studies and historical sources, in this example the Albini and Pantosti (2004) study.

Figure 8. An example of results retrieved by a complex query on the database, as shown in a Web browser using the Open Source web-based GeoNode graphical user interface environment.

Makropoulos KC, Kouskouna V. 1994. The 1894 April 20 and 27 Atalanti earthquakes: 100 years after-lessons learnt. Proceedings of the XXIV ESC General Assembly, Sept 19–24, 1994; Athens (Greece); vol. 1:61–71.

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Albini P, Pantosti D. 2004. The 20 and 27 April 1894 (Locris, Central Greece) earthquake sources through coeval records on macroseismic effects. Bull Seismol Soc Am 94(4):1305–1326.

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