Abstract
During the period 1959 to 1964 recorded volcanic activity in the Azores islands (Atlantic Ocean) was manifested by fumarolic fields in S. Miguel, Terceira, Graciosa, Pico and Faial and by two submarine eruptions off Pico and S. Jorge. Fumarolic activity increased in the Faial Capelinhos vent (in eruption 1957–58) after December 1963; it is concluded that the phenomenon is related to the 1963 and 1964 eruptions in the S. Jorge Channel. During February 1964 an important seismic swarm of more than 500 earthquakes, with volcanic tremor, occurred in S. Jorge.
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References
Agostinho, J., 1937 —Volcanic Activity in the Azores, Report for 1933–36. Bull. Volc., s. II, T. 2, p. 183–92, Napoli.
Forjaz, V. H., 1964 —Sobre as isotérmicas e as temperatures do vulcáo dos Capelinhos (Açores) dos anos de 1961, 1962 e 1963. Noticia preliminar. Bol. Soc. Port. Cienc. Nat., vol. 10, 2a s., p. 46–51, Lisboa.
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Forjaz, V.H., Weston, F.S. Volcanic activity in the Azores. Report for 1959–1964. Bull Volcanol 31, 261–266 (1967). https://doi.org/10.1007/BF02597016
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DOI: https://doi.org/10.1007/BF02597016