- 行业: Mining
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The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
In seismic prospecting, the person who supervises the work of a field party. Subordinate to a nonresident party chief who is responsible for the interpretation of the data.
Industry:Mining
In seismic prospecting, the product of the number of detectors per trace and the number of sources used simultaneously.
Industry:Mining
In seismic prospecting, the true dip of a reflection or refraction horizon found by exploration and calculation. See: true dip
Industry:Mining
In seismic prospecting, the use of a number of energy sources arranged in a definite geometric pattern.
Industry:Mining
In seismic work, a map on which the low-velocity layer, or weathered layer, is plotted and contoured to show areal variations.
Industry:Mining
In seismic work, a method or methods of logging a well so that average velocities, continuous velocities, or interval velocities are obtained by lowering geophones into the hole. Shots are usually fired from surface shot holes, but may be fired in the well itself, or perforating-gun detonations may be used. In continuous logging, a sound source is lowered in the hole together with recording geophones.
Industry:Mining
In seismic work, a position at which a depth determination of a mapped horizon has been calculated.
Industry:Mining
In seismograph continuous profiling, a coincident travel path for seismic energy initiated at opposite ends of the path. The use of such coincident travel paths on adjacent reflection layouts facilitates correlation from one layout to the next as the shot point or recording position is changed.
Industry:Mining
In seismology, a diagram of a series of lines showing equal times from the point of detonation. In its construction, velocity information must be known or assumed. Charts are usually constructed so that the horizontal and vertical scales are in length, but they can be constructed so that the horizontal scale is in length and the vertical scale is in time.
Industry:Mining
In seismology, a procedure in reflection interpretation in which depth points are computed and plotted for each seismogram trace separately.
Industry:Mining
