In an attempt to better understand the impact that large mining shots will have on verifying compliance with the international, worldwide, Comprehensive Test Ban Treaty (CTBT, no nuclear explosion tests), a series of seismic and videographic experiments has been conducted during the past two years at the Black Thunder Coal Mine. Personnel from the mine and Los Alamos National Laboratory have co...

Adjoint backtracking for the verification of the Comprehensive Test Ban Treaty J.-P. Issartel and J. Baverel Ecole Nationale des Ponts et Chaussées, Centre d’Enseignement et de Recherche Eau, Ville, Environnement, Champs sur Marne, France previously at: Commissariat à l’Energie Atomique, DASE, Bruyères le Châtel, France Received: 1 August 2002 – Accepted: 22 October 2002 – Published: 19 Novembe...

Seismic event location remains as one of the most important discriminants for separating natural tectonic and explosive events. However, in order to be useful for discrimination purposes, the uncertainties associated with seismic locations must be well defined and reliable, and this has proven to be difficult to accomplish to the required degree of accuracy. In particular, high-confidence estim...

This work focuses on the determination of time zero nuclear events considering Xe-135/I-135 isotopic activity ratio. Considered as relevant isotopes for CTBT, theses two radionuclides are usable radioactive release timing. According considered databases, some parameters namely A, U and F evaluated taking into account numerical difference between values from database. We found that these give di...