NEtwork of Research Infrastructures for European Seismology Deliverable D2 Electronic archive of historical earthquake studies (demo version) (June 2009) Activity: Activity number: Deliverable: Distributed Archive of Historical Earthquake Data NA4, Task 2 Deliverable number: Electronic archive of historical earthquake studies, demo version D2 Responsible activity leader: Responsible participant: Author: Massimiliano Stucchi INGV Paola Albini, Mario Locati with the collaboration of: Josep Batllo, Andrea Cassera, Paola Migliavacca, Andrea Rovida, Massimiliano Stucchi Sixth Framework Programme EC project number: 026130 NA4 – D2 Electronic archive of historical earthquake studies, demo version The electronic archive of historical earthquake studies (1000-1750) Task 2 - Collecting and qualifying the data Earthquake studies [with or] without IDPs will be digitised in PDF format and made available through the portal and/or CDs. [In addition] Earthquake studies with IDP will be analysed, in order to: i) evaluate the reliability of the data, ii) assess a standard format for (re)compiling IDPs according to homogeneous criteria, in such a way that each entry will contain: a) time of earthquake occurrence; b) place-name, its identification and geographical co-ordinates as from the directory; c) assigned intensity value; d) a quality value representing the reliability of this datum for general use. A first version of the inventory - up to 1600 - will be made available after month 12; it will be A first set of data, corresponding to the same time window as for Task 1 - will be made available after month 24. The data set will be then implemented according to Task 1 progress. (from NERIES, NA4, DoW, November 2005) Index 1. Goals and Requirements 2. State-of-the-art 2.1 Dissemination 2.2 The copyright and licensing restrictions 2.3 Electronic archive and digital library 3. Building the electronic archive Foreword 3.1 Identifying and retrieving the material, digitizing 3.2 Actual contents 3.3 How NA4 electronic archive deals with copyright and licensing restrictions 3.4 The adopted software solution 4. How to use the electronic archive Appendices Appendix 1 – Some pages extracted from recent (post 1990) earthquake studies stored in NA4 electronic archive Appendix 2 - List of the 236 different and fully referenced items inventoried for the time-window 1000-1750 Note. The data described in this text are available on the NA4 website http://emidius.mi.ingv.it/neries_NA4/ partner login (user and password to be delivered by the NA4 coordination unit) D2 -2- NA4 – D2 Electronic archive of historical earthquake studies, demo version 1. Goals and Requirements This deliverable will deal with the first goal of NA4 Task 2, that is to retrieve, store and make easily traceable and accessible to the scientific community the main published and unpublished historical earthquake studies, in their original version, related to the earthquakes inventoried in Task 1 (D1+D6 – The comprehensive NA4 Working File, 10001750). The minimum item stored in NA4 electronic archive is a historical earthquake study. This is identified as the individual, dedicated study whose object is an earthquake that (on the base of this study) came to be known and consequently included in a parametric earthquake catalogue. A study differs from a list of sources or a list of references as it (hopefully) should include how the investigation has been performed, summarise the informative contents of the sources, describe how the earthquake records have been interpreted, and report the output of the investigation in terms of affected places, macroseismic intensity and earthquake parameters. Some examples are shown in Appendix 1. The list of the studies included in the archive will be redundant, that is, different studies referring to the same event will be stored. However, special reference and attention will be devoted to those to be used in compiling the macroseismic intensity database (D4) and the parametric earthquake catalogue for the European and Mediterranean area (D8). The main end-users of NA4 electronic archive will be the world-wide community of the seismologists, who in most cases are also the authors of the studies. The NA4 electronic archive should allow them to directly and easily access the huge amount of material on historical earthquakes produced in the last 50 years by individuals or regional institutions. As of today, most of these studies are not accessible and some of them are at risk of being lost for ever. The main efforts concern the identification of these studies, their retrieval and their acquisition, either directly in digital format or in a hardcopy to be then digitized. In addition, copyright and licensing restrictions have to be faced and solved, as much as possible. With the purpose of enlarging the public availability of this material, a software has to be adopted or designed, so to allow the end-users to browse and search inside the electronic archive, and to directly examine the material. The software must be designed in such a way to provide a coherence with the other components of the NA4 Distributed Archive of Historical Earthquake Data (D1+D6 - The comprehensive NA4 Working File, 1000-1750, D4 - The European Macroseismic Database). 2. State-of-the-art 2.1 Dissemination Historical earthquake studies have been produced by many European individuals and institutions since the 1980’s, but their dissemination is in most cases very limited, since the studies may still be of restricted use for their producers, as is often the case with the internal reports commissioned in view of the compilation of regional or national earthquake catalogues. This is very similar to what happens with the macroseismic data and databases (see D4), and for this reason we present here in short the results of a review of the digital archives existing in Europe that may encompass and/or include historical earthquake studies. The situation is not different today from the one at the beginning of this activity (June 2006). Few customized implementations have been found in the historical seismological domain: • The French macroseismic database SISFRANCE (as described in Scotti et al., 2004); supplies a bibliography and some scanned images of the original documents (Fig. 1), with the agreement of the Direction des Archives de France. http://www.sisfrance.net/ -3- NA4 – D2 Electronic archive of historical earthquake studies, demo version Fig. 1 – A scanned document stored in SISFRANCE • The Catalogue of Strong Earthquakes in Italy (461 B.C.-1997) and Mediterranean Area (760 B.C.-1500) CFTI4MED (Guidoboni et al., 2007) provides excerpts from the original documents (Fig. 2). http://storing.ingv.it/cfti4med/ Fig. 2 – Excerpts from sources in CFTI4MED. -4- NA4 – D2 Electronic archive of historical earthquake studies, demo version • The Earthquake Catalog of Switzerland (ECOS) (Faeh et al, 2003; http://histserver.ethz.ch/ includes for each earthquake a simple list of references (Fig. 3), but no digitized material. Fig. 3 – List of references in ECOS. Out of Europe, two websites have been identified with a content strictly related to historical earthquake studies: • The project for a database for primary sources on historical earthquakes for the Middle Ages, coordinated by the Kobe University, Research Centre for Urban Safety; http://historical.seismology.jp/erice/. The website is in progress. • Sistema de Teleinformación de Sismología Histórica de Venezuela, including a digital version of the sources related to each event (Fig. 4). http://sismicidad.hacer.ula.ve/ Fig. 4 – Electronic version of a source on a Venezuelan earthquake in 1853. -5- NA4 – D2 Electronic archive of historical earthquake studies, demo version Among the resources of the web should be mention “Earth-prints”, an Open Access repository, created and maintained by INGV, Italy (http://www.earth-prints.org/). It stores articles, presentations and other material on Earth Sciences, including earthquake studies. 2.2 The copyright and licensing restrictions Since 2001 the European Commission is operating towards “the harmonisation of certain aspects of copyright and related rights in the information society” with a specific Directive (2001/29/EC). Still, the publishers’ constraints are very heavily influencing the accessibility rights of the scientific community. There are different bodies of law in each European country (e.g. for Italy the 1941 law is still in force, only amended by a new regulation issued in 2005). There are several degrees of limitations for each item, e.g. concerning the reproduction, or the production of derivative works, or its distribution according to a medium different from the one it was made public, the translation. The delicate aspect of copyright needs to be better understood in the view of an open dissemination of the archive of historical earthquake studies. Here follows a summary of the restrictions caused by copyright to papers on journals or volumes, which constitute the bulk of NA4 electronic archive: What is protected by a copyright: • all papers on peer-reviewed journals for which the authors has signed a copyright transfer agreement • books or chapters of books What is not protected (anymore) by a copyright: • works for which the copyright has expired (roughly 50 years after the death of the owner of the intellectual property) • preprints (usually) • unpublished material, for which the author is living and can authorize the distribution according to commonly agreed restrictions • unpublished material (e.g. archival documents or manuscripts) for which no authorization is required to publish their edition, bar the actual reproduction of the original (photos). 2.3 Electronic archive and digital library Electronic archive is a wording that might be compared to “digital library”. The latter is commonly defined as “a library in which collections are stored in digital formats (as opposed to print, microform, or other media) and accessible by computers”. In this sense, the use of this medium perfectly suits the main goal of NA4 Distributed archive of historical earthquake data. The digital library can be seen as one of the core-repositories of the archive, and differently from a common library is built according to the specific philosophy of historical earthquake studies and related purposes. The problem of building up digital libraries have already been addressed by universities and scientific institutions throughout the world. The answer chosen by the most important institutions is what is called “Open Access”. “Open Access (OA) is free, immediate, permanent, full-text, online access, for any user, web-wide, to digital scientific and scholarly material, primarily research articles published in peer-reviewed journals. OA means that any individual user, anywhere, who has access to the Internet, may link, read, download, store, print-off, use, and data-mine the digital content of that article. An OA article usually has limited copyright and licensing restrictions.” The main steps of the development of the Open Access movement are: -6- NA4 – D2 Electronic archive of historical earthquake studies, demo version 2001: Creation of the Creative Commons License focusing on the expansion of reasonable, flexible copyright (San Francisco) • 2002: the Open Society Institute launched the Budapest Open Access Initiative • 2003: the Berlin Declaration on Open Access to Knowledge in the Sciences and Humanities was drafted and the World Summit on the Information Society included open access in its Declaration of Principles and Plan of Action • 2007: European Research Council Guidelines for Open Access (17 December). Some examples can be seen at: • DSpace at Cambridge, UK - Digital Archive, http://www.lib.cam.ac.uk/dspace/ • repository of the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM), located at the U.S. National Institutes of Health (NIH): http://www.ncbi.nlm.nih.gov/PubMed/ • e-prints in Physics, Mathematics, Computer Science, Quantitative Biology and Statistics, by the Cornell University, Ithaca, USA: http://arxiv.org/ • OA Earth-prints repository, INGV, Italy http://www.earth-prints.org/ (mentioned above). • 3. Building the electronic archive Foreword The delay in the submission of this deliverable was due to two factors: i) the importance to experiment the structure of the archive (before its implementation); ii) the need to check the most suitable software solutions among those already available. As a trial to check on the philopsophy behind an electronic archive of historical earthquake studies, two examples were partially implemented: a) on a national base, the “Inventario degli studi macrosismici italiani” (Inventory of the Macroseismic studies for the Italian territory), that is now a part of the Macroseismic Database for Italy (Stucchi et alii, 2007); b) on a larger area, the world excluding Europe, in the framework of the IASPEI Working Group “Historical Seismology” (Fig. 5). Fig. 5 – Website of the IASPEI Working Group “Historical Seismology” (http://emidius.mi.ingv.it/HISEIS/ -7- NA4 – D2 Electronic archive of historical earthquake studies, demo version As for what the software is concerned, the first trial was on a DSpace-based solution. DSpace is an open source software, which has been adopted by research institutions and universities worldwide (see above). Its advantages are that it is a ready-to-use software, widely spread in research environments, has different degrees of item access, and a complete implementation with every possible option. Its drawbacks are overwhelming, and they are summarised in the following: it is of difficult customisation, and difficult to update when a bug is discovered; it was initially created for a university digital library, that has to store thousands of items, with too many options and general complexity of the entire archiving process. In all, it has excessive maintenance costs, especially in terms of man/power, and last but not least the stored items were difficult to retrieve from the NA4 online Working File. The internal production of a software compatible with all the issues of NA4 was then started, and caused the delay in the submission of this deliverable. 3.1 Identifying and retrieving the material, digitizing The preparation of the list of the earthquake studies to be included in the electronic archive followed two main directions: i) retrieving the studies directly quoted by the parametric earthquake catalogues for each country or region; ii) searching for new, hitherto not considered published and especially unpublished contributions on historical earthquakes, with special reference to pre-1900 events. The first activity was developed in strict connection with the compilation of NA4 Working File (D1+D6). The second activity was partly carried out by the team of the responsible (INGVMI) and partly with the contribution of NA4 partners and collaborators. Once identified, the material was retrieved by means of a painstaking activity of bibliographical searches, visits to library catalogues (both in electronic version and directly in the relevant libraries), contacts with European institutions dealing with historical seismicity and with mere historical investigation also. Some of the material was supplied by partners and collaborators already in digital format, but for most of Europe the studies were available in hardcopy only. Such situation asked for important efforts in organizing and digitizing the retrieved material, so that it might be inventoried and stored electronically. This activity was carried out mainly at INGV-MI, and resulted in the creation and link of about 4,000 scanned pages in .pdf format. 3.2 Actual contents The electronic archive was built starting from the individual studies identified as preferred roots for the Working File 1000-1750 (see D1+D6). It consists now of 236 different and fully referenced items, 57 of which have simply been identified but not yet retrieved. Their list is presented in Appendix 2. A preliminary analysis on how the 149 different preferred roots contribute to the comprehensive NA4 Working File (D1+D6), time-window 1000-1750 and with reference to the 1291 earthquakes with Io>5, M>4.5 and the the 257 fakes is given in Table 1. The table shows in what percentage their use is restricted by copyright. Table 1 – Analysis of the 149 preferred studies/roots for the time-window 1000-1750 NA4 WF 1000-1750 preferred studies/roots % of copyr. studies % of public studies Earthquakes Fakes 1291 257 115 59 68 63 32 37 Total 1548 149 65 35 -8- NA4 – D2 Electronic archive of historical earthquake studies, demo version From this preliminary analysis, it appears as evident that the copyright and licensing restrictions are the main obstacles to a widespread dissemination and public accessibility of the electronic archive. 3.3 How NA4 electronic archive deals with copyright and licensing restrictions As by now, the archive is NOT open to the public, but only accessible via password to a selected list of users. Notwithstanding, each item included in the archive is marked according to the relative status of its copyright. This means that it relies upon each authorized user to respect the copyright and licensing restrictions for each item. Possible solutions to further open the archive to the public are listed below. It has to be stressed that not even among NA4 partners was reached any agreement on some of them (especially the last two, which imply to take actions to make the material really open to the public). Adopted solutions for copyrighted material are: • items are accessible to the public according to different levels: i) open, no restrictions; ii) semi-open, partial access respecting the copyright restraints; iii) restricted: authorized users only • partial reproduction within the allowed percentage (ranging from 15 to 30%) • the authors themselves ask to the publishers for permission to modify their copyright transfer agreement • extensive use of metadata descriptors (abstract, reference list, possibly more data), though this is a very time-consuming effort 3.4 The adopted software solution As explained in the foreword to this section, the adopted software was one internally developed by INGV-MI, and it has the following characteristics: o advantages: specific needs can be implemented easily, accessing the stored items from other internal developed software is easy, debugging is easier; o drawbacks: a time-consuming development; complex archiving features, such as those related to the indexing of the scanned material textual content; The Open Access implementations consist of three parts: • the core: an online multi-user database management system ("DBMS"); • a collection of files (PDFs) stored on the server file system; • a web interface for managing data. The online database contains a series of tables linking to each other all the information describing the stored historical earthquake studies. A number of the so called "meta data" (data about data) are kept: • bibliography metadata: title, author, publisher, date of publication, references; • copyright metadata: copyright owner, levels of delivering possibilities and limits; • links metadata: links to the original study in electronic format and to web related resources. The online database engine can gather multiple transactions from multiple connections together: in this way it can be accessed and manipulated simultaneously by many users at the same time. The collection of PDF files is kept in the server file-system and indexed for a faster research from the web interface. The web interface is able to organize and index the content of the core database. Simple queries can be done through metadata. The software uses a serverside scripting language that interacts with the online core database and produces web pages in real-time. -9- NA4 – D2 Electronic archive of historical earthquake studies, demo version This demo version (Beta) offers the best interfacing possibilities with the comprehensive NA4 Working File (D1+D6) and the European Macroseismic Database (D4). 4. How to use the electronic archive The electronic archive is organised to respect the coherence and the links with the other elements of the NA4 Distributed Archive. At this stage, its access is limited to partners and collaborators, under the understanding and the agreement that the material is in progress, partly confidential and, therefore, not to be delivered outside the project. The access is through the NA4 homepage, under Deliverable 2 – Electronic archive of earthquake studies. To the authorized users, the first page showing is a table whose contents is the same reported in Appendix 1 of this report (bar the Language column), as shown in Fig. 6. Fig. 6 – The opening page of the electronic archive. Each column can be sorted simply by clicking on the grey triangle on top of it, for each of the different parameters inserted in the archive. From left to right, the archive shows the short citation of each root, the complete bibliographical reference, the language in which the root was originally written, the copyright status and the availability of the item in the archive. The “format” of the archive is shortly described in a table, located in a pop-up window that opens clicking on the button in the upper part of the page (Fig. 7). -10- NA4 – D2 Electronic archive of historical earthquake studies, demo version Fig. 7 – The format of the electronic archive. The metadata are at this stage still restricted to three only, namely author/s, editor/s and year of publication (Fig. 8). This is a component still in progress, as metadata may be increased to make the archive even more friendly and similar to the solutions mentioned in the previous sections. Fig. 8 – Metadata (right side of the screenshot, blue labelled columns) -11- NA4 – D2 Electronic archive of historical earthquake studies, demo version To access the items stored in the archive, the users should click on the “Short citation”. By doing so, a pop-up window will appear, as shown in Fig. 9-a. From it, by clicking on the sentence “In the NA4 Working File [...]”, the user will have access to the list of the earthquakes to which this item is related, and thus be able to check the availability of the electronic copy marked by @ in the column “PDF” (Fig. 9-b). Fig. 9 – a) Selection of an individual item stored in the electronic archive. Fig. 9 – b) Earthquakes for which the selected item is available in electronic format, marked with @ in the column PDF. By clicking on the @ the user will access to the electronic copy of the root, and decide whether to open the .pdf or download it (Fig. 10). -12- NA4 – D2 Electronic archive of historical earthquake studies, demo version Fig. 10 – Open Access to the electronic copy of the root. References Fäh D. et al., 2003. Earthquake Catalogue Of Switzerland (ECOS) and the related macroseismic database. Eclogae geol. Helv., 96, 219-236. Guidoboni E., Ferrari G., Mariotti D., Comastri A., Tarabusi G. and Valensise G., 2007. Catalogo dei forti terremoti 461 a.C.-1997. http://storing.ingv.it/cfti4med/ Scotti O., Baumont D., Quenet G., Levret A., 2004. The French macroseismic database SISFRANCE: objectives, resultsand perspectives. Ann. Geophys., 47, 2-3, 571-595. Stucchi et alii, 2007. DBMI04, il database delle osservazioni macrosismiche dei terremoti italiani utilizzate per la compilazione del catalogo parametrico CPTI04. http://emidius.mi.ingv.it/DBMI04/Quaderni di Geofisica, Vol 49, 38 pp. -13- NA4 – D2 Electronic archive of historical earthquake studies, demo version Appendices Appendix 1 – Examples of recent (post 1990) earthquake studies stored in NA4 electronic archive Example of a study on an individual earthquake. The study includes a list and a map of affected places and relative macroseismic intensity Schwarz-Zanetti G., Deichmann N., Fäh D., Masciadri V., Goll J., 2004. The earthquake in Churwalden (CH) of September 3, 1295. Eclogae geol. Helv., 97, 255-264. -14- NA4 – D2 Electronic archive of historical earthquake studies, demo version Example of a study on many, different earthquakes. In some cases the study includes a list+map of affected places and macroseismic intensity. Musson R.M.W., 2008. The seismicity of the British Isles to 1700, BGS Technical Report OR/08/049. -15- NA4 – D2 Electronic archive of historical earthquake studies, demo version Example of a study on many, different earthquakes. In some cases the study includes a list+map of affected places and macroseismic intensity. Guidoboni E. and Comastri A., 2005. Catalogue of earthquakes and tsunamis in the Mediterranean area from the 11th to the 15th century. INGV-SGA, Bologna, 1037 pp. -16- NA4 – D2 Electronic archive of historical earthquake studies, demo version Example of a study on many, different earthquakes. The study includes maps of affected places and relative macroseismic intensity. Melville C.P., Levret A., Alexandre P., Lambert J. and Vogt J., 1996. Historical seismicity of the Strait of Dover-Pas de Calais. Terra Nova, 8, 6, 626-647. -17- NA4 – D2 Electronic archive of historical earthquake studies, demo version Example of a study on an individual earthquake. The study includes a map to locate affected places, but no macroseismic intensity. Hammerl Ch., 1995. Das Erdbeben vom 4. Mai 1201. Mitteilungen des Instituts fur Oesterreichische Geschichtsforschung, München, 103, 3-4, 350-368. -18- NA4 – D2 Electronic archive of historical earthquake studies, demo version Example of a study on many, different earthquakes. The study includes some maps to locate affected places, but no macroseismic intensity. Ambraseys N.N. and Finkel C., 1995. The Seismicity of Turkey and adjacent areas. A Historical Review, 1500-1800. Eren, Istanbul, 240 pp. -19- NA4 – D2 Electronic archive of historical earthquake studies, demo version Appendix 2 – List of the 236 different and fully referenced items inventoried for the time-window 1000-1750 Short citation Adhami, 1971 Ahorner et al., 1970 Albini & Vogt, 1992 Albini & Vogt, 2008 Albini et al., 1994a Albini et al., 1994b Albini et al., 2003 Albini, 1999 Albini, 2004 Albini, 2009ip Alexandre et al., 2008 Complete reference Adhami S., 1971. Gjurmime rreth themelimit dhe rindërtimzve kryesore të kalasë së Krujës (La fondation de la citadelle de Kruje et ses principales reconstructions). Monumentet, 1, pp. 87-101 (Résumé). Ahorner L., Murawski H. and Schneider G., 1970. Die Verbreitung von schadenverursachenden Erdbeben auf dem Gebiet der Bundesrepublik Deutschland. Versuch einer seismologischen Regionalisierung. Z. Geophys. 36, 3, 313-343. Albini P. and Vogt J., 1992. Landslide or earthquake? Case histories from historical sources. In: E. Faccioli and A. Pecker (eds.), Proceedings of the French-Italian conference on Slope Stability in Seismic Areas, Bordighera (Imperia), 11-24. Albini P. and Vogt J., 2008. A glimpse into the seismicity of the Ionian Islands between 1658 and 1664. In: J. Fréchet, M. Meghraoui, M. Stucchi (eds.), Historical Seismology, 43-91. Albini P., Bellettati D., Camassi R., Moroni A., Stucchi M. and Zerga A. (eds.), 1994a. Revisione dei terremoti di interesse per il territorio della Provincia di Trento. Rapporto tecnico per la Provincia Autonoma di Trento, IRRS-CNR, Milano, 210 pp. Albini P., Ambraseys N.N. and Monachesi G., 1994b. Materials for the investigation of the seismicity of the Ionian Islands between 1704 and 1766. In: P. Albini and A. Moroni (eds), Materials of the CEC project "Review of Historical Seismicity in Europe", CNR, Milano, vol. 2, 11-26. Albini P., Migliavacca P. and Moroni A., 2003. Studio di alcuni terremoti di intensità epicentrale moderata in Italia settentrionale. Rapporto tecnico, INGV-MI, 58 pp. + appendices. Albini P., 1999. Venetian documents on earthquakes within and at the western borders of the Ottoman Empire (17th-18th centuries). In: Zachariadou E. (ed), Natural Disasters in the Ottoman Empire, Institute for Mediterranean Studies, Halcyon Days in Crete III, A Symposium Held in Rethymnon (Greece), 10-12 January 1997, 67-88. Albini P., 2004. A survey of the past earthquakes in the Eastern Adriatic (14th to early 19th century). Ann. Geophys., 47, 2/3, 675-703. Albini P., 2009ip. Studies in progress on earthquakes in Bulgaria (1000-1750). NERIES NA4 Report, INGV, Milano (in progress). Alexandre P., Kusman D., Petermans T., Camelbeek T., 2008. The 18 September 1692 Earthquake in the Belgian Ardenne and its aftershocks. In: J. Fréchet, M. Meghraoui, M. Stucchi (eds.), Historical Seismology, 209-230. Availability Copyright null copyright null copyright full copyright full copyright full public full copyright full public full copyright full copyright partial public full copyright -20- NA4 – D2 Electronic archive of historical earthquake studies, demo version Short citation Alexandre, 1990 Alexandre, 1991 Alexandre, 1994 Ambraseys & Fin., 1992 Ambraseys & Fin., 1995 Ambraseys & Fin., 1999 Ambraseys & Mel., 1983 Ambraseys, 1985a Ambraseys, 1994b Ambraseys, 2001 Ambraseys, 2002 Anonym, 1720 Anonym, nd Arch.Mac.GDT FK, 1997 Arch.Mac.GNDT, 1995 Atanasiu, 1961 Babach. & Glav., 2008 Complete reference Alexandre P., 1990. Les séismes en Europe occidentale de 394 à 1259. Nouveau catalogue critique. Observatoire Royal de Belgique, Série Geophysique, Bruxelles, 267 pp. Alexandre P., 1991. The Seismic Cataclism of 29 March 1000: Genesis of a Mistake. Tectonophysics, 193, 45-52. Alexandre P., 1994. Historical seismicity of the lower Rhine and Meuse valleys from 600 to 1525: a new critical review. Geologie en Mijnbouw, 73, 431-438. Ambraseys N.N. and Finkel C., 1992. The seismicity of the Eastern Mediterranean Region during the turn of the Eighteenth Century. Istanbuler Mitteilungen, 42, 323-343. Ambraseys N.N. and Finkel C., 1995. The Seismicity of Turkey and adjacent areas. A Historical Review, 15001800. Eren, Istanbul, 240 pp. Ambraseys N.N. and Finkel C., 1999. Unpublished Ottoman archival information on the seismicity of the Balkans during the period 1500-1800. In: Zachariadou E. (ed), Natural Disasters in the Ottoman Empire, Institute for Mediterranean Studies, Halcyon Days in Crete III, A Symposium Held in Rethymnon (Greece), 10-12 January 1997, 89-107. Ambraseys N.N. and Melville C.P., 1983. The seismicity of the British Isles and the North Sea. SERC Marine Technology Centre, London. Ambraseys N.N., 1985a. The seismicity of western Scandinavia. Earthquake Engineering and Structural Dynamics, 13, 361-399. Ambraseys N.N., 1994b. A note on two little-known 16th-18th century earthquakes in Central Greece. Epistimoniakes anakoinoseis-Dialexeis, 2, 75-81. Ambraseys N.N., 2001. The earthquake of 1509 in the Sea of Marmara, Turkey, revisited. Bull. Seismol. Soc. Am., 91, 6, 1397-1416. Ambraseys N.N., 2002. The seismic activity of the Marmara Sea Region over the last 2000 years. Bull. Seismol. Soc. Am., 92, 1, 1-18. Anonym, 1720. Von den saechsischen Erdbeben. Samml. Natur-, Medicin-, Kunstund Literaturgeschichte, 13, 69-77. Anonym, nd. Potresi u Madzarskoj (Earthquakes in Hungary), Manuscript for Djurdjevac. Archivio Macrosismico GNDT, 1997. Terremoti falsi e dubbi. Rapporti interni. IRRS-CNR, Milano. Archivio Macrosismico GNDT, 1995. Studi preliminari di terremoti attraverso i repertori sismologici. Archivio macrosismico del GNDT, Milano. Atanasiu I., 1961. Earthquakes in Romania. Academia R.P.R., Bucarest, 194pp. (in Romanian) Babachkova B., Glavcheva R., 2008. Documentary material on Earthquakes. Bulgaria, XVI-XIX century. ESC 31st General Assembly, Hersonissos, Crete, Greece, 7-12 September 2008, NONINS-1-HIST, Poster, 306. Availability Copyright full copyright full copyright full copyright full copyright full copyright full copyright null copyright null copyright full copyright full copyright full copyright null public null public full public full public null copyright full copyright -21- NA4 – D2 Electronic archive of historical earthquake studies, demo version Short citation Baptista et al., 2007 Baratta, 1901 Barbano et al., 1996 Barbano et al., 2001 Batlló & Cruz, 2008 Batlló & Mart.-S., 2008 Batlló, 2009ip Bekmann & Bek., 1751 Bernardis et al.,1978 BGS, nd Boschi & Guid., 2001 Boschi & Guid., 2003 Boschi et al., 1997 Boschi et al., 2000 Broucek, 1980 Burgauer, 1651 Burton et al., 1984 Complete reference Baptista M.A., Miranda J.M., Lopes Fernando C., Luis Joaquim F., 2007. The source of the 1722 Algarve earthquake: evidence from MCS and tsunami data. JOSE, 11, 371-380. Baratta M., 1901. I Terremoti d'Italia. Saggio di Storia, Geografia e Bibliografia Sismica Italiana con 136 sismocartogrammi. Torino, 950 pp. Barbano F., Azzaro R., Birritta P., Castelli V., Lo Giudice E. and Moroni A., 1996. Stato delle conoscenze sui terremoti siciliani dall'anno 1000 al 1880: schede sintetiche. GNDT, Rapporto interno, Catania, 287 pp. Barbano M.S., Rigano R., Cosentino M. and Lombardo G. , 2001. Seismic history and hazard in some localities of South-Eastern Sicily. Boll. Geof. Teor. Appl., 42, 1-2, 107-120. Batlló J. and Cruz J., 2008. Earthquake on 29 June of 1033. Review. Report for NERIES, NA4, 4 pp. Batlló J. and Martinez Solares J.M., 2008. Review of the 6 December 1475 and 22 June 1544 earthquakes. Report for NERIES NA4. Barcelona and Madrid, 7 pp. Batlló J., 2009ip. Studies on 1000-1750 earthquakes in the Iberian peninsula. NERIES NA4 report, Barcelona (in progress). Bekmann J.Ch. und Bekmann B.L., 1751. Historische Beschreibung der Chur und Mark Brandenburg. Berlin. Bernardis G., Giorgetti F., Nieto D. and Slejko D., 1978. 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