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Temporal and Spatial Evolutions of a Large Sunspot Group and Great Auroral Storms Around the Carrington Event in 1859
This research was conducted under the support of the Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology of Japan, Grant Number JP15H05814 (PI: K. Ichimoto),Expand
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Solving the Mystery: The 21 October 1880 Portuguese Earthquake
Online Material: Relevant accounts for intensity estimates of the 21 October 1880 Portuguese earthquake. Despite recent important contributions to the completeness of earthquake catalogs, there areExpand
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South American auroral reports during the Carrington storm
The importance of the investigation of magnetic superstorms is not limited to academic interest, because these superstorms can cause catastrophic impact on the modern civilisation due to ourExpand
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Validation of borehole temperature with meteorological data using spectral analysis
(1) UTAD, CITAB, Vila Real, Portugal (jsantos@utad.pt), (2) Geophysical Centre of the University of Evora, Colegio Luis Antonio Verney, Rua Romao Ramalho, 59, 7000-671 Evora, Portugal, (3) InstituteExpand