Haldemann, Albert F. C., Johnson, Jerome B., Elphic, Richard C., Boynton, William V., Wetzel, John
CRUX is a modular suite of geophysical and borehole instruments combined with display and decision support system (MapperDSS) tools to characterize regolith resources, surface conditions, and...
Assessing Fog Oil Deposition to Simulated Plant Surfaces During Military Training (2007)
Douglas, Thomas A., Johnson, Jerome B., Collins, Charles M., Reynolds, Charles M., Foley, Karen L., Perry, Lawrence B., ...
Fog oil is used as a battlefield obscurant during military operations. A smoke-like aerosol is emitted from mobile generators by volatilizing standard grade fuel #2 and blowing it through a heated...
Elphic, Richard C., Hahn, Sangkoo, Lawrence, David J., Feldman, William C., Johnson, Jerome B., Haldemann, Albert F. C.
The Construction and Resource Utilization eXplorer (CRUX) project aims to develop an integrated, flexible suite of instruments with data fusion software and an executive controller for the purpose of...
Gas Gun Experiments to Determine Shock Wave Behavior in Snow: Methods and Data (2006)
Johnson, Jerome B., Brown, Joseph A., Gaffney, Edward S., Solie, Daniel J., Sturm, Matthew A.
A laboratory study of the behavior of snow under shock wave loading and unloading conditions was conducted using a 200-mm-diameter gas gun to generate loading waves in snow samples with initial...
Estimates of Shock Wave Attenuation in Snow (2003)
A simple momentum model, assuming that snow compacts to its final density at negligible stress, is used to estimate shock wave attenuation in snow. Four shock loading situations are examined: a...
Stress Measurements in Ice, (1998)
Cox,Gordon F. N., Johnson,Jerome B.
The problems associated with measuring stresses in ice are reviewed. Theory and laboratory test results are then presented for a stiff cylindrical sensor made of steel that is designed to measure ice...
Measurement of Frost Heave Forces on H-Piles and Pipe Piles, (1998)
Johnson, Jerome B., Buska, James S.
The magnitude and variation of forces and shear stresses, caused by frost heaving in Fairbanks silt and the adfreeze effects of a surface ice layer and a gravel layer, were determined as a function...
Shock Response of Snow: Analysis of Experimental Methods and Constitutive Model Development, (1998)
Johnson, Jerome B., Brown, Jay A., Gaffney, Edward S., Blaisdell, George L., Solie, Daniel J.
A shock impact test was conducted on snow with an initial density of 400 kg/cu.m using a large-diameter gas gun and Lagrangian stress gauges between layers of snow. The shock propagation velocity...
A Statistical Micromechanical Theory of Cone Penetration in Granular Materials (1998)
A micromechanical theory of cone penetration in granular material is developed that takes into account the effects of soil/penetrometer friction, material compaction, and the statistics of...
Snow Mechanics: Review of the State of Knowledge and Applications, (1997)
Shapiro, Lewis H., Johnson, Jerome B., Sturm, Mathew, Blaisdell, George L.
A review of snow mechanics indicates that, with the exception of avalanche studies, it is seldom used. In this report we give our interpretation of why this is the case, and suggest ways to help...