Search Results - "Sears, D.W.G."

Concepts and approaches to in situ luminescence dating of martian sediments by McKeever, S.W.S., Banerjee, D., Blair, M., Clifford, S.M., Clowdsley, M.S., Kim, S.S., Lamothe, M., Lepper, K., Leuschen, M., McKeever, K.J., Prather, M., Rowland, A., Reust, D., Sears, D.W.G., Wilson, J.W.

“…In this paper we present the concept of a robotic instrument for in situ luminescence dating of near-surface sediments on Mars. The scientific objectives and…”
Get full text

Ejecta blocks around the Kings Bowl phreatomagmatic crater in Idaho: An indication of subsurface water amounts with implications for Mars by Sears, D.W.G., Sehlke, A., Hughes, S.S., Kobs-Nawotniak, S.

“…The Kings Bowl lava field, associated with the Craters of the Moon National Monument and Preserve on the Great Rift in Idaho, U.S.A., contains many explosive…”
Get full text

Formation of the “ponds” on asteroid (433) Eros by fluidization by Sears, D.W.G., Tornabene, L.L., Osinski, G.R., Hughes, S.S., Heldmann, J.L.

“…The “ponds” on asteroid (433) Eros are fine-grained deposits approximating flat (quasi-equipotential) surfaces with respect to local topographic depressions…”
Get full text

Experimental study of the effect of wind on the stability of water ice on Mars by Chittenden, J.D., Chevrier, V., Roe, L.A., Bryson, K., Pilgrim, R., Sears, D.W.G.

“…We have studied the effect of wind velocity on the sublimation rate of pure water ice under martian conditions. Measurements were made for wind velocities…”
Get full text

Corrigendum to “Experimental study of the effect of wind on the stability of water ice on Mars” [Icarus 196 (2008) 477–487] by Chittenden, J.D., Chevrier, V., Roe, L.A., Bryson, K., Pilgrim, R., Sears, D.W.G.

Get full text

A sample collector for robotic sample return missions I: Temperature effect on collected mass by Franzen, M.A., Roe, L.A., Buffington, J.A., Sears, D.W.G.

“…Sample return is playing an increasingly important role in solar system exploration. Among the possible mission on the horizon, are sample return from…”
Get full text

A sample collector for robotic sample return missions II: Radiation tests by Venechuk, E., Franzen, M.A., Roe, L.A., Sears, D.W.G.

“…Sample return from small solar system objects is playing an increasingly important part in solar system exploration. Critical to such missions is a robust,…”
Get full text

A sample collector for robotic sample return missions III: Impact survivability studies by Azouggagh-McBride, S., Roe, L.A., Franzen, M.A., Buffington, J.A., Sears, D.W.G.

“…Laboratory impact tests have been performed on experimental versions of a proposed robotic sample collector for extraterrestrial samples. The collector…”
Get full text

Metal size distributions in EH and EL chondrites by Schneider, D. M., Benoit, P. H., Kracher, A., Sears, D. W. G.

“…EL chondrites exhibit larger average metal grain sizes than EH chondrites, a difference attributed by Easton [1983] to metamorphic coarsening, as most EL…”
Get full text

Investigation of biological, chemical and physical processes on and in planetary surfaces by laboratory simulation by Sears, D.W.G, Benoit, P.H, McKeever, S.W.S, Banerjee, D, Kral, T, Stites, W, Roe, L, Jansma, P, Mattioli, G

“…The recently established Arkansas–Oklahoma Center for Space and Planetary Science has been given a large planetary simulation chamber by the Jet Propulsion…”
Get full text

Size and density sorting of metal and silicate grains under microgravity conditions and the origin of chondrites by Franzen, M. A., Nichols, S., Bogdon, K., White, C., Godsey, R., Napieralski, N., Benoit, P. H., Sears, D. W. G.

“…We report here experiments on NASA's KC‐135 microgravity facility aimed at investigating metal‐silicate fractionation in chondrites. Metal and sand particle…”
Get full text

The origin of chondrites: Metal-silicate separation experiments under microgravity conditions - II by Moore, S. R., Franzen, M., Benoit, P. H., Sears, D. W. G., Holley, A., Meyer, M., Godsey, R., Czlapinski, J.

“…In order to understand mechanical processes likely to be occurring on the surfaces of asteroids, we have performed experiments with mineral mixtures on NASA's…”
Get full text

The Hera near-Earth asteroid sample return mission: science requirements of the sample collector by Sears, D.W.G., Allen, C.C., Bell, M.S., Bogard, D., Britt, D., Brownlee, D.E., Chapman, C., Clark, B.C., Dissley, R., Franzen, M.A., Goldstein, J., Nishiizumi, K., Nyquist, L., Pieters, C.M., Scheeres, D., Scott, E.R.D., Treiman, A.

“…The Hera mission is a proposed Discovery class mission to collect three samples from each of three near-Earth asteroids. Returned samples would have…”
Get full text

The Orbits of Meteorites from Natural Thermoluminescence by Benoit, P.H., Sears, D.W.G.

“…The natural thermoluminescence (TL) of meteorites reflects their irradiation and thermal histories. Virtually all ordinary chondrites have been irradiated long…”
Get full text

The breakup of a meteorite parent body and the delivery of meteorites to earth by Benoit, Paul H., Sears, D. W. G.

“…Whether many of the 10,000 meteorites collected in the Antarctic are unlike those falling elsewhere is contentious. The Antarctic H chondrites, one of the…”
Get full text