1988
DOI: 10.1111/j.1365-246x.1988.tb01144.x
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Seismic P-waves from Novaya Zemlya explosions: seeing double!

Abstract: SUMMARY The P‐wave seismograms generated by an underground explosion on 11 October, 1980 at the northern Novaya Zemlya test site are quite different from the seismograms normally recorded from explosions there. However, the PcP seismograms are similar to the PcPs normally observed. A simple deconvolution of the seismograms yields pulse shapes that are interpreted as being generated by two simultaneous explosions, some 7 km apart. The spatial separation causes the appearance of the P‐wave seismograms to change … Show more

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Cited by 3 publications
(2 citation statements)
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“…Since the investigations in the 1970s by Chowdhury & Frasier (1973) and Engdahl & Johnson (1974), steep‐angle reflections from the Earth's core have rarely been used in seismological studies. Examples for ScP can be found in Burdick (1985), Nagumo & McCreery (1992), or in Castle & van der Hilst (2000) and, for PcP , in Stewart & Marshall (1988) or in Souriau & Souriau (1989). The number of observed steep‐angle reflections is in general very small as can be easily verified by a search in the Bulletins of the ISC.…”
Section: Cmb Reflections At Short Distancesmentioning
confidence: 89%
“…Since the investigations in the 1970s by Chowdhury & Frasier (1973) and Engdahl & Johnson (1974), steep‐angle reflections from the Earth's core have rarely been used in seismological studies. Examples for ScP can be found in Burdick (1985), Nagumo & McCreery (1992), or in Castle & van der Hilst (2000) and, for PcP , in Stewart & Marshall (1988) or in Souriau & Souriau (1989). The number of observed steep‐angle reflections is in general very small as can be easily verified by a search in the Bulletins of the ISC.…”
Section: Cmb Reflections At Short Distancesmentioning
confidence: 89%
“…These averages are comparable to the 120 m/kt 1/3 used for planning purposes at the Nevada Test Site (NTS) in the US. The 18 October 1975 and 11 October 1980 events may each have been two simultaneous explosions spaced several kilometers apart (Lilwall and Marshall, 1986;Stewart and Marshall, 1988). There are also two test numbers and SDOB's assigned to these dates by Andrianov and others (1992), as well as to the events of 21 October 1967, and 14 October 1969, perhaps suggesting that these were all double events.…”
Section: Underground Nuclear Explosionsmentioning
confidence: 98%