Geologic constraints on clandestine nuclear testing in South Asia

摘要

Cavity decoupling in salt is the most plausi- ble means by which a nation could conduct clandestine testing of mililarily significant nuclear weapons. The conditions under which solution-mined salt can be used for this purpose are quite rcstrictive. The salt must be thick and reasonably pure. Containment of explosions sets a shallow limit on depth, and cavity stability sets a deep limit. These constraints are met in considerably <1 of the total land area of india and Pakistan. Most of that area is too dry for cavity construction by solution mining, disposal of brine in rivers can be detected easily. Salt domes, the most favorable structures for con- structing large cavities, are not present in india and Pakistan. Confidence that they are adhering to the Comprehensive Test Ban Treaty (CTBT) is enhanced by their geological conditions, which are quite favorable to verification, not evasion. Thus, their participation in the CTBT is constrained overwhelm.