Research on construction of a full-text database of all historical earthquake documents in the Japanese Ancient and Medieval ages and on composition of an international-standard seismic intensity database

在日本，“左庭大日本志新Shiryo（日本地震史料汇编，扩大修订版）（1941年，1943年，1951年）和“Shinshu Nihon Jishin Shiryo”（日本地震历史文献新集）（1981-1994）共25卷，汇集了日本自世纪以来已知的各种历史地震资料，为历史地震学提供了宝贵的基础资料。然而，它们包含了相当多的低质量材料，产生错误和虚构的（假）地震，而且只是在印刷格式中，数量太大，无法充分利用。为了从根本上改善这种状况，我们进行了一项研究计划，对古代和中世纪（直到公元前1000年）的所有历史地震文献进行了校勘和数据库化。公元1600年），它一直是地球科学家，历史学家和信息科学家之间的跨学科合作。我们一直在严格审查现有馆藏中的所有历史文献，选择它们，仔细修订每一个文本，并以数字形式重新编辑收藏。此外，我们还试图组成一个地震烈度数据库兼容的强度数据点（IDP）在欧洲盛行。采用XML（可扩展标记语言）对地震文献进行标记，建立了地震文献全文数据库的alpha版本。由于这一数据库，澄清了有关现有地震历史文献收藏的各种问题。该项目目前正在作为2006-2007年科学研究补助金（B）的第二阶段进行。

In Japan, 'Zotei Dai-Nihon Jishin Shiryo (Collection of Historical Documents on Earthquakes in Japan, Enlarged and Revised Edition)' edited by Musha (1941, 1943, 1951) and 'Shinshu Nihon Jishin Shiryo (Historical Documents on Earthquakes in Japan, New Collection)' edited by Usami and his colleagues (1981-1994), 25 volumes in all, have comprised nvaluable fundamental data for historical seismology, as collections of all Japan's known historical earthquake records clipped from various historical sources since around the 6th century. However, they contain rather many low-quality materials that produce errors and fictitious (fake) earthquakes, and are too huge volumes, just in printed format, to be thoroughly utilized. In order to improve this situation fundamentally, we have carried out a research project of emending and databasing all historical earthquake documents in the Ancient and Medieval ages (up to ca. A.D. 1600), which has been interdisciplinary collaboration among earth scientists, historians and information scientists. We have been critically examining all the historical documents in the existing collections, selecting them, carefully emending every text, and composing a re-edited collection in digital form. Furthermore, we have tried to compose a seismic intensity database compatible with the Intensity Data Points (IDP) prevailing in Europe. The XML (eXtensible Markup Language) has been introduced for mark-upping documents, and the alpha-version of a full-text database of historical earthquake documents has been constructed. Owing to this database, various problems have been clarified concerning existing collections of historical earthquake documents. The project is now going on as the second phase under the Grant-in-Aid for Scientific Research (B) in the term of 2006-2007.