Abstract
The paper presents the parameters of seismic wave travel times for three artificially induced events obtained from the archive of the Institute of Geosphere Dynamics (IDG RAS). For the study, we chose underground nuclear tests (Long Shot, Milrow, and Cannikin) with magnitudes 6.1 < mb < 6.8 conducted by the United States of America from 1965 to 1971 on Amchitka Island in the Aleutian Arc. The study contains the results of observations obtained with various types of seismic channels. Travel time curves were constructed, and the linear functions of body wave propagation were obtained for epicentral distances of Δ ~ 8°–85° and ~134°–160°. The integral velocity of the Earth’s upper mantle and outer core is estimated. The wave travel times are intended for further research of seismic waves from shallow artificially induced sources (701–1791 m) and for refining the Earth’s structure.
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ACKNOWLEDGMENTS
The authors thank L.D. Godunova and T.V. Chelyubeeva for invaluable help in collecting material for the article.
Funding
Seismic wave parameter data were systematized owing to the archive of IDG RAS, created with the support of the Russian Foundation for Basic Research (project no. 97-07-90225). The study was carried out under the state task of the Research Station of the Russian Academy of Sciences in Bishkek, AAAA-A19-119020190064-9.
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Nepeina, K.S., An, V.A. Travel Time Curves of Seismic Waves from Underground Explosions on Amchitka Island. Acoust. Phys. 67, 640–647 (2021). https://doi.org/10.1134/S1063771021060117
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DOI: https://doi.org/10.1134/S1063771021060117