文章基本信息

标题：Digitization of Bromide Paper Records to Extract One-Minute Geomagnetic Data
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作者：N Mashiko ; T Yamamoto ; M Akutagawa 等
期刊名称：Data Science Journal
电子版ISSN：1683-1470
出版年度：2015
卷号：12
DOI：10.2481/dsj.WDS-046
语种：English
出版社：Ubiquity Press
摘要：Many long-term geomagnetic observation results recorded on photographic bromide paper have not yet been fully digitized. To that end, we developed a method to automatically convert photographic records to one-minute digital data. We applied our method to the observation records of Kakioka Magnetic Observatory and confirmed that the resolution of time and amplitude could be greatly improved by numerical conversion compared with conventional data conversion by hand scaling. Our results suggest that highly precise digitization of analog magnetograms is possible.
关键词：Analog magnetogram; Digitization; Geomagnetism; Photographic paper; Historical data; Digital data extraction; One-minute data