Search Results - "Bridges, Nathan T"

Higher-than-predicted saltation threshold wind speeds on Titan by Burr, Devon M., Bridges, Nathan T., Marshall, John R., Smith, James K., White, Bruce R., Emery, Joshua P.

“…Wind tunnel experiments designed to simulate the conditions on Saturn’s moon Titan yield threshold wind speeds for particle saltation higher than those…”
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The Mars Science Laboratory (MSL) Bagnold Dunes Campaign, Phase I: Overview and introduction to the special issue by Bridges, Nathan T., Ehlmann, Bethany L.

“…The Bagnold dunes in Gale Crater, Mars, are the first active aeolian dune field explored in situ on another planet. The Curiosity rover visited the Bagnold…”
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Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE) by McEwen, Alfred S., Eliason, Eric M., Bergstrom, James W., Bridges, Nathan T., Hansen, Candice J., Delamere, W. Alan, Grant, John A., Gulick, Virginia C., Herkenhoff, Kenneth E., Keszthelyi, Laszlo, Kirk, Randolph L., Mellon, Michael T., Squyres, Steven W., Thomas, Nicolas, Weitz, Catherine M.

“…The HiRISE camera features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system that can acquire images containing up to 28…”
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Hydrothermal formation of Clay-Carbonate alteration assemblages in the Nili Fossae region of Mars by Brown, Adrian J., Hook, Simon J., Baldridge, Alice M., Crowley, James K., Bridges, Nathan T., Thomson, Bradley J., Marion, Giles M., de Souza Filho, Carlos R., Bishop, Janice L.

“…The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has returned observations of the Nili Fossae region indicating the presence of Mg-carbonate in…”
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Ventifacts on Earth and Mars: Analytical, field, and laboratory studies supporting sand abrasion and windward feature development by Laity, Julie E., Bridges, Nathan T.

“…Terrestrial ventifacts – rocks that have been abraded by windblown particles – are found in desert, periglacial, and coastal environments. On Mars, their…”
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Direct Measurement of Interparticle Forces of Titan Aerosol Analogs (“Tholin”) Using Atomic Force Microscopy by Yu, Xinting, Hörst, Sarah M., He, Chao, McGuiggan, Patricia, Bridges, Nathan T.

“…To understand the origin of the dunes on Titan, it is important to investigate the material properties of Titan's organic sand particles on Titan. The organic…”
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Water vapor diffusion in Mars subsurface environments by Hudson, Troy L., Aharonson, Oded, Schorghofer, Norbert, Farmer, Crofton B., Hecht, Michael H., Bridges, Nathan T.

“…The diffusion coefficient of water vapor in unconsolidated porous media is measured for various soil simulants at Mars‐like pressures and subzero temperatures…”
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Gale crater and impact processes – Curiosity’s first 364 Sols on Mars by Newsom, Horton E., Mangold, Nicolas, Kah, Linda C., Williams, Joshua M., Arvidson, Ray E., Stein, Nathan, Ollila, Ann M., Bridges, John C., Schwenzer, Susanne P., King, Penelope L., Grant, John A., Pinet, Patrick, Bridges, Nathan T., Calef, Fred, Wiens, Roger C., Spray, John G., Vaniman, David T., Elston, Wolf E., Berger, Jeff A., Garvin, James B., Palucis, Marisa C.

“…•Impact crater processes observed during MSL’s first 360 Sols were studied.•Possible impactites are scarce, but include shatter cones and disrupted…”
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Northern hemisphere Martian gullies and mantled terrain: Implications for near-surface water migration in Mars' recent past by Bridges, Nathan T., Lackner, Claire N.

“…We report on a systematic study of gullies and mantled terrain in the northern hemisphere of Mars. Consistent with previous work, the mantled terrain is…”
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Winds measured by the Rover Environmental Monitoring Station (REMS) during the Mars Science Laboratory (MSL) rover's Bagnold Dunes Campaign and comparison with numerical modeling using MarsWRF by Newman, Claire E., Gómez-Elvira, Javier, Marin, Mercedes, Navarro, Sara, Torres, Josefina, Richardson, Mark I., Battalio, J. Michael, Guzewich, Scott D., Sullivan, Robert, Torre, Manuel de la, Vasavada, Ashwin R., Bridges, Nathan T.

“…•This paper presents the first wind measurements in an active dune field on Mars.•Daytime upslope/nighttime downslope flows dominate in winter on the slopes of…”
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Columbia Hills, Mars: Aeolian features seen from the ground and orbit by Greeley, Ronald, Whelley, Patrick L., Neakrase, Lynn D. V., Arvidson, Raymond E., Bridges, Nathan T., Cabrol, Nathalie A., Christensen, Philip R., Di, Kaichang, Foley, Daniel J., Golombek, Matthew P., Herkenhoff, Kenneth, Knudson, Amy, Kuzmin, Ruslan O., Li, Ron, Michaels, Timothy, Squyres, Steven W., Sullivan, Robert, Thompson, Shane D.

“…Abundant wind‐related features occur along Spirit's traverse into the Columbia Hills over the basaltic plains of Gusev Crater. Most of the windblown sands are…”
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The Bagnold Dunes in Southern Summer: Active Sediment Transport on Mars Observed by the Curiosity Rover by Baker, Mariah M., Lapotre, Mathieu G. A., Minitti, Michelle E., Newman, Claire E., Sullivan, Robert, Weitz, Catherine M., Rubin, David M., Vasavada, Ashwin R., Bridges, Nathan T., Lewis, Kevin W.

“…Orbiter‐based observations have demonstrated that active aeolian environments are ubiquitous across Mars. Here we examine one such environment, the Bagnold…”
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Trajectories and energy transfer of saltating particles onto rock surfaces: Application to abrasion and ventifact formation on Earth and Mars by Bridges, Nathan T., Phoreman, James, White, Bruce R., Greeley, Ronald, Eddlemon, Eric E., Wilson, Gregory R., Meyer, Christine J.

“…The interaction between saltating sand grains and rock surfaces is assessed to gauge relative abrasion potential as a function of rock shape, wind speed, grain…”
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Dynamic Mars from long-term observations: Introduction by Bridges, Nathan T., Tamppari, Leslie K.

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Patterns in Mobility and Modification of Middle and High-Latitude Southern Hemisphere Dunes on Mars by Banks, Maria E., Fenton, Lori K., Bridges, Nathan T., Geissler, Paul E., Chojnacki, Matthew, Runyon, Kirby D., Silvestro, Simone, Zimbelman, James R.

“…Change detection analyses of aeolian bedforms (dunes and ripples), using multitemporal imagesacquired by the Mars Reconnaissance Orbiter High Resolution…”
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The High Resolution Imaging Science Experiment (HiRISE) during MRO’s Primary Science Phase (PSP) by McEwen, Alfred S., Banks, Maria E., Baugh, Nicole, Becker, Kris, Boyd, Aaron, Bergstrom, James W., Beyer, Ross A., Bortolini, Edward, Bridges, Nathan T., Byrne, Shane, Castalia, Bradford, Chuang, Frank C., Crumpler, Larry S., Daubar, Ingrid, Davatzes, Alix K., Deardorff, Donald G., DeJong, Alaina, Alan Delamere, W., Dobrea, Eldar Noe, Dundas, Colin M., Eliason, Eric M., Espinoza, Yisrael, Fennema, Audrie, Fishbaugh, Kathryn E., Forrester, Terry, Geissler, Paul E., Grant, John A., Griffes, Jennifer L., Grotzinger, John P., Gulick, Virginia C., Hansen, Candice J., Herkenhoff, Kenneth E., Heyd, Rodney, Jaeger, Windy L., Jones, Dean, Kanefsky, Bob, Keszthelyi, Laszlo, King, Robert, Kirk, Randolph L., Kolb, Kelly J., Lasco, Jeffrey, Lefort, Alexandra, Leis, Richard, Lewis, Kevin W., Martinez-Alonso, Sara, Mattson, Sarah, McArthur, Guy, Mellon, Michael T., Metz, Joannah M., Milazzo, Moses P., Milliken, Ralph E., Motazedian, Tahirih, Okubo, Chris H., Ortiz, Albert, Philippoff, Andrea J., Plassmann, Joseph, Polit, Anjani, Russell, Patrick S., Schaller, Christian, Searls, Mindi L., Spriggs, Timothy, Squyres, Steven W., Tarr, Steven, Thomas, Nicolas, Thomson, Bradley J., Tornabene, Livio L., Van Houten, Charlie, Verba, Circe, Weitz, Catherine M., Wray, James J.

“…The High Resolution Imaging Science Experiment (HiRISE) on the Mars Reconnaissance Orbiter (MRO) acquired 8 terapixels of data in 9137 images of Mars between…”
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A wind tunnel study of the effect of intermediate density ratio on saltation threshold by Burr, Devon M., Sutton, Stephen L.F., Emery, Joshua P., Nield, Emily V., Kok, Jasper F., Smith, James K., Bridges, Nathan T.

“…[Display omitted] •The Titan Wind Tunnel (TWT) is used to collect new freestream threshold data.•We convert the data to dimensionless values as a function of…”
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Modification of martian slope streaks by eolian processes by Chuang, Frank C., Beyer, Ross A., Bridges, Nathan T.

“…Recent images from the High Resolution Imaging Science Experiment (HiRISE) camera have shown that slope streaks have relief on the order of a meter or less…”
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Shifting sands on Mars: insights from tropical intra-crater dunes by Geissler, Paul E., Stantzos, Nicholas W., Bridges, Nathan T., Bourke, Mary C., Silvestro, Simone, Fenton, Lori K.

“…ABSTRACT Evidence for sand motion is found in repeated observations of sand dunes at three sites in the Martian tropics by the High Resolution Imaging Science…”
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Characteristics of the Pathfinder APXS sites: Implications for the composition of Martian rocks and soils by Bridges, Nathan T., Crisp, Joy A., Bell, James F.

“…An integrated study of spectral, elemental abundance, and image data from the Pathfinder alpha proton X‐ray spectrometer (APXS) measurement sites has led to a…”
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