Abstract: A method is described for of creating a high-resolution velocity model of a geological medium that includes generating a long-wavelength anisotropic velocity model using tomographic inversion of seismic data gathers and combining the long-wavelength velocity model with an attenuation model. The method further includes performing prestack depth migration on the seismic data gathers using the long-wavelength velocity and attenuation model to produce seismic image gathers, applying a dip-consistent filter to the seismic image gathers, and transforming the filtered seismic image gathers to the time domain. The method further includes generating a full-band impedance model by performing impedance inversion of the time-domain filtered seismic image gathers using the long-wavelength velocity and attenuation model. The full-band impedance or velocity model is calibrated in the frequency domain in a manner independent of the spatial coordinates.

Abstract: A method is described for of creating a high-resolution velocity model of a geological medium that includes generating a long-wavelength anisotropic velocity model using tomographic inversion of seismic data gathers and combining the long-wavelength velocity model with an attenuation model. The method further includes performing prestack depth migration on the seismic data gathers using the long-wavelength velocity and attenuation model to produce seismic image gathers, applying a dip-consistent filter to the seismic image gathers, and transforming the filtered seismic image gathers to the time domain. The method further includes generating a full-band impedance model by performing impedance inversion of the time-domain filtered seismic image gathers using the long-wavelength velocity and attenuation model. The full-band impedance or velocity model is calibrated in the frequency domain in a manner independent of the spatial coordinates.

Abstract: A detonation initiator for use in explosive warheads to cause dual-end ination of the explosive within the warhead. An initiation transfer tube positioned interiorly and centrally within the warhead explosive contains a primary ignitor attached to a plurality of explosive trains leading to secondary ignitors. Booster plates positioned at either end of the explosive charge and adjacent the secondary ignitors detonate the explosive at either end causing the detonating front to travel toward the center of the explosive causing a great force to extend radially outward centrally from either end of the explosive. An initiation transfer tube positioned concentric with the explosive provides for an explosive output initiating from a single point at the center of the warhead to its ends without destroying or damaging the warhead.

Abstract: An apparatus for providing a variable explosive energy source. The appara has an outer annular body with a wall containing a plurality of radial explosive chambers. A rotatable circular body positioned within the annular body and concentric with its axis allows 360.degree. mechanical rotation to bring an explosive train in intimate contact with a desired number of the explosive chambers. A squib device located within the circular body is electrically actuated to ignite an explosive train causing detonation of a predetermined number of the explosive chambers which are in contact with the explosive train.