scholarly journals Time series modelling of the Kobe-Osaka earthquake recordings

2002 ◽  
Vol 29 (8) ◽  
pp. 467-479 ◽  
Author(s):  
N. Singh ◽  
D. Tampubolon ◽  
V. S. S. Yadavalli

A problem of great interest in monitoring a nuclear test ban treaty (NTBT) is related to interpreting properly the differences between a waveform generated by a nuclear explosion and that generated by an earthquake. With a view of comparing these two types of waveforms, Singh (1992) developed a technique for identifying a model in time domain. Fortunately this technique has been found useful in modelling the recordings of the killer earthquake occurred in the Kobe-Osaka region of Japan at 5.46 am on 17 January, 1995. The aim of the present study is to show how well the method for identifying a model (developed by Singh (1992)) can be used for describing the vibrations of the above mentioned earthquake recorded at Charters Towers in Queensland, Australia.

1994 ◽  
Vol 37 (3) ◽  
Author(s):  
P. D. Marschall

The problem of verifying compliance with a nuclear test ban treaty is mainly a technical one. However the problem of detecting, locating and identifying nuclear explosions has, since the late 1950s, been intimately involved with the political problems associated with negotiating a treaty. In fact there are few other areas in which policy, diplomacy and science have been so interwoven. This paper attempts to illustrate how technology can. be applied to solve some of the political problems which arise when considering the role of an On Site Inspection (OSI) to determine whether or not a nuclear explosion, in violation of a treaty, has occurred or not. It is hoped that the reader, with a scientific background, but with little or no experience of treaty negotiations, will gain an. insight as to how technical matters can interact with political requirements. The demands made on scientists to provide technical support for negotiating and rnonitoring compliance of a treaty have increased significanfly over the last 40 years. This is a period in which a number of major treaties have contained a significant technical component e.g. the Limited Test Ban Treaty (Threshold Treaty) and the Chemical Weapon Convention. This paper gives an indication of some of the political decisions which will have to be made and suggests some of the technical methods which are of value in the identification of a clandestine nuclear explosion.


2013 ◽  
Vol 27 (1) ◽  
pp. 169-188 ◽  
Author(s):  
ALESSANDRA PIETROBON

AbstractThe Comprehensive Nuclear Test Ban Treaty (CTBT) will not be effective until all the 44 states listed in its Annex 2 ratify it. A special link has been established between the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and the CTBT. The disarmament obligation set by Article VI of the NPT, which has not yet been complied with, remains highly controversial. The relevant subsequent practice of the states parties to the NPT shows that the ratification of the CTBT is to be considered the first of the practical steps towards compliance with Article VI. However, as the practical steps do not set any legally binding norms, there is no legal obligation to ratify the CTBT, not even for the 44 states listed in Annex 2 whose ratification is essential. The paper deals with the position of nuclear powers party to the NPT that have not yet ratified the CTBT (most prominently the US and China) and demonstrates that these states should at least provide detailed motivation for their conduct. Otherwise, other states parties to the NPT could consider them as not complying in good faith with Article VI of the NPT and invoke the inadimplenti non est ademplendum rule to justify breaches of their own obligations under the same treaty.


Nature ◽  
10.1038/39720 ◽  
1997 ◽  
Vol 389 (6653) ◽  
pp. 781-782 ◽  
Author(s):  
Paul G. Richards ◽  
Won-Young Kim

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