The relatively low rates of magma production in island arcs and continental extensional settings require that the volume of silicic magma involved in large catastrophic caldera-forming (CCF) eruptions must accumulate over periods of 105 to 106 years. We address the question of why buoyant and otherwise eruptible highsilica magma should accumulate for long times in shallow chambers rather than e...

Overpressure is an important metric of the destructive effect shock wave produced by high explosion. Investigating overpressure on surface essential way for evaluating power explosive device. This study has implications quantitative analyses establishing relationship between parameters reflected using numerical simulation software AUTODYN with different TNT charge mass. The research indicates t...

TITLE: Brain Vulnerability to Repeated Blast Overpressure and Polytrauma PRINCIPAL INVESTIGATOR: Joseph B. Long, Ph.D. CONTRACTING ORGANIZATION: The Geneva Foundation Tacoma, WA 98402 REPORT DATE: November 2013 TYPE OF REPORT: Final PREPARED FOR: U.S. Army Medical Research and Materiel Command Fort Detrick, Maryland 21702-5012 DISTRIBUTION STATEMENT: Approved for public release; distribution un...

Due to the flammability and explosion characteristics of the propane vapor cloud, a nearby propane tank farm could possibly present a significant risk to the operation of nuclear power plants. Accidental releases of propane may occur in the propane supply pipeline, at the propane storage tanks, or on the propane transportation routes due to propane transport trailer truck accidents. Loss of con...

This paper investigated the effectiveness of a vent burst door in isolating shock waves gas explosions coal mines and to reveal mechanisms explosion overpressure. A 17.5 m × φ 0.63 columnar test duct with similar shape roadways was designed. Explosion overpressure propagation characteristics effects methane concentration at different locations along without were experimentally investigated. The...