Accession Number : ADA257260


Title :   Experimental Results of USSR Nuclear Explosion Decoupling Measurements


Corporate Author : SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA CENTER FOR SEISMIC STUDIES


Personal Author(s) : Adushkin, V V ; Kitov, I O ; Sultanov, D D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257260.pdf


Report Date : Sep 1992


Pagination or Media Count : 15


Abstract : This report was presented at the 14th annual PL/DARPA Seismic Research Symposium on September 16, 1992. In it, we describe a decoupling experiment undertaken by the former Soviet Union at Azghir, north of the Caspian Sea. The properties of the cavity are given, including a rough description of the geology (salt-dome overlain by 275 m radius sphere, 987 m deep), velocities, densities, etc. These shots had larger yields than the Salmon-Sterling decoupling experiments undertaken by the U.S. in the mid-sixties. Like the U.S. experiment, this Soviet experiment did not achieve full decoupling. The energy decoupling factor (computed from statistical relationships between the yield and amplitude-distance curves rather than spectra) increased to a maximum of 30 as distance increase. Based on our observations and theoretical limits to decoupling, we conclude that a fully decoupled 1 kt explosion could be observed at a distance of 2,500 km.


Descriptors :   *SEISMIC DETECTION , *DECOUPLING , *NUCLEAR EXPLOSION DETECTION , VELOCITY , USSR , COUNTERMEASURES , BOREHOLES , SOILS , ROCK , UNDERGROUND EXPLOSIONS


Subject Categories : Nuclear Weapons


Distribution Statement : APPROVED FOR PUBLIC RELEASE