Search Results - "NOE DOBREA, Eldar"

Phyllosilicate Diversity and Past Aqueous Activity Revealed at Mawrth Vallis, Mars by Bishop, Janice L., Dobrea, Eldar Z. Noe, McKeown, Nancy K., Parente, Mario, Ehlmann, Bethany L., Michalski, Joseph R., Milliken, Ralph E., Poulet, Francois, Swayze, Gregg A., Mustard, John F., Murchie, Scott L., Bibring, Jean-Pierre

“…Observations by the Mars Reconnaissance Orbiter/Compact Reconnaissance Imaging Spectrometer for Mars in the Mawrth Vallis region show several phyllosilicate…”
Get full text

Present-Day Impact Cratering Rate and Contemporary Gully Activity on Mars by Malin, Michael C, Edgett, Kenneth S, Posiolova, Liliya V, McColley, Shawn M, Dobrea, Eldar Z. Noe

“…The Mars Global Surveyor Mars Orbiter Camera has acquired data that establish the present-day impact cratering rate and document new deposits formed by…”
Get full text

Mineralogy of Juventae Chasma: Sulfates in the light-toned mounds, mafic minerals in the bedrock, and hydrated silica and hydroxylated ferric sulfate on the plateau by Bishop, Janice L., Parente, Mario, Weitz, Catherine M., Noe Dobrea, Eldar Z., Roach, Leah H., Murchie, Scott L., McGuire, Patrick C., McKeown, Nancy K., Rossi, Christopher M., Brown, Adrian J., Calvin, Wendy M., Milliken, Ralph, Mustard, John F.

“…Juventae Chasma contains four light‐toned sulfate‐bearing mounds (denoted here as A–D from west to east) inside the trough, mafic outcrops at the base of the…”
Get full text

Stratigraphy of hydrated sulfates in the sedimentary deposits of Aram Chaos, Mars by Lichtenberg, Kimberly A., Arvidson, Raymond E., Morris, Richard V., Murchie, Scott L., Bishop, Janice L., Fernandez Remolar, David, Glotch, Timothy D., Noe Dobrea, Eldar, Mustard, John F., Andrews-Hanna, Jeffrey, Roach, Leah H.

“…Sedimentary deposits within the 280 km wide crater containing Aram Chaos (∼3°N, 339°E) have been differentially eroded by wind to expose a stratigraphic column…”
Get full text

Mineralogical characterization of acid weathered phyllosilicates with implications for secondary martian deposits by Altheide, Travis S., Chevrier, Vincent F., Noe Dobrea, Eldar

“…The detection of phyllosilicates and sulfates on Mars has revealed a complex aqueous history which suggests distinct geochemical environments separated…”
Get full text

Inverted channel variations identified on a distal portion of a bajada in the central Atacama Desert, Chile by Williams, Rebecca M.E., Irwin, Rossman P., Noe Dobrea, Eldar Z., Howard, Alan D., Dietrich, William E., Cawley, J.C.

“…In deserts, the interplay between occasional fluvial events and persistent aeolian erosion can form composite modern and relict surfaces, especially on the…”
Get full text

Geologic relationships between gray hematite, sulfates, and clays in Capri Chasma by Weitz, Catherine M., Noe Dobrea, Eldar Z., Lane, Melissa D., Knudson, Amy T.

“…We used emissivity spectra from the Thermal Emission Spectrometer (TES) to identify the signature of crystalline gray hematite in Capri Chasma. Geologic units…”
Get full text

Characterization of phyllosilicates observed in the central Mawrth Vallis region, Mars, their potential formational processes, and implications for past climate by McKeown, Nancy K., Bishop, Janice L., Noe Dobrea, Eldar Z., Ehlmann, Bethany L., Parente, Mario, Mustard, John F., Murchie, Scott L., Swayze, Gregg A., Bibring, Jean-Pierre, Silver, Eli A.

“…Mawrth Vallis contains one of the largest exposures of phyllosilicates on Mars. Nontronite, montmorillonite, kaolinite, and hydrated silica have been…”
Get full text

Identification of the Ca-sulfate bassanite in Mawrth Vallis, Mars by Wray, James J., Squyres, Steven W., Roach, Leah H., Bishop, Janice L., Mustard, John F., Noe Dobrea, Eldar Z.

“…The region surrounding the Mawrth Vallis outflow channel on Mars hosts thick layered deposits containing diverse phyllosilicate minerals. Here we report…”
Get full text

Ancient hydrothermal seafloor deposits in Eridania basin on Mars by Michalski, Joseph R., Dobrea, Eldar Z. Noe, Niles, Paul B., Cuadros, Javier

“…The Eridania region in the southern highlands of Mars once contained a vast inland sea with a volume of water greater than that of all other Martian lakes…”
Get full text

A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter by Murchie, Scott L., Mustard, John F., Ehlmann, Bethany L., Milliken, Ralph E., Bishop, Janice L., McKeown, Nancy K., Noe Dobrea, Eldar Z., Seelos, Frank P., Buczkowski, Debra L., Wiseman, Sandra M., Arvidson, Raymond E., Wray, James J., Swayze, Gregg, Clark, Roger N., Des Marais, David J., McEwen, Alfred S., Bibring, Jean-Pierre

“…Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase,…”
Get full text

Gray hematite distribution and formation in Ophir and Candor chasmata by Weitz, Catherine M., Lane, Melissa D., Staid, Matthew, Dobrea, Eldar Noe

“…We have studied eight of the spatially largest locations in Ophir and Candor chasmata that have the highest abundances of coarse‐grained gray hematite, as…”
Get full text

Mixtures of clays and sulfates within deposits in western Melas Chasma, Mars by Weitz, Catherine M., Noe Dobrea, Eldar, Wray, James J.

“…•Bright layered mounds on the chasma floor contain Ca-sulfates.•A blocky deposit has Fe- and Al-clays, hydrated silica, and/or an acid leached…”
Get full text

Small crater relaxation and ice abundance at high northern latitudes on Mars by Cunje, Alister B., Dombard, Andrew J., Noe Dobrea, Eldar Z.

“…The cold, northern high-latitudes around the Phoenix landing site feature a population of small and very shallow craters known as palimpsest craters or boulder…”
Get full text

The Oldest Highlands of Mars May Be Massive Dust Fallout Deposits by Rodriguez, J. Alexis P., Dobrea, Eldar Noe, Kargel, Jeffrey S., Baker, V. R., Crown, David A., Webster, Kevin D., Berman, Daniel C., Wilhelm, Mary Beth, Buckner, Denise

“…The oldest terrains of Mars are cratered landscapes, in which extensive valleys and basins are covered by ubiquitous fluvial plains. One current paradigm…”
Get full text

A Mission Simulating the Search for Life on Mars with Automated Drilling, Sample Handling, and Life Detection Instruments Performed in the Hyperarid Core of the Atacama Desert, Chile by Stoker, Carol R, Glass, Brian J, Stucky, Thomas R, Dave, Arwen I, Kobayashi, Linda T, Quinn, Richard C, Moreno-Paz, Mercedes, Sánchez-García, Laura, Mora, Maria F, Kehl, Florian, Parro, Víctor, Willis, Peter A, Davila, Alfonso, Noe Dobrea, Eldar, Rask, Jon C, Ricardo, Daniel

“…We report on a field demonstration of a rover-based drilling mission to search for biomolecular evidence of life in the arid core of the Atacama Desert, Chile…”
Get more information

Nonlinear spectral mixture modeling to estimate water-ice abundance of martian regolith by Gyalay, Szilárd, Noe Dobrea, Eldar Z., Chu, Kathryn, Pitman, Karly M.

“…We present a new technique to estimate the abundance of water-ice in the Martian permafrost using Phoenix Lander Surface Stereo Imager (SSI) multispectral…”
Get full text

Regional Geology of the Hypanis Valles System, Mars by Adler, Jacob B., Bell, James F., Warner, Nicholas H., Dobrea, Eldar Noe, Harrison, Tanya N.

“…We present a geomorphic map of the Hypanis Valles watershed and a geomorphic map of the Hypanis deposit region at its terminus. We mapped these two regions at…”
Get full text

Planetary Rover Exploration Combining Remote and In Situ Measurements for Active Spectroscopic Mapping by Candela, Alberto, Kodgule, Suhit, Edelson, Kevin, Vijayarangan, Srinivasan, Thompson, David R., Noe Dobrea, Eldar, Wettergreen, David

“…Maintaining high levels of productivity for planetary rover missions is very difficult due to limited communication and heavy reliance on ground control. There…”
Get full text

HiRISE views enigmatic deposits in the Sirenum Fossae region of Mars by Grant, John A., Wilson, Sharon A., Noe Dobrea, Eldar, Fergason, Robin L., Griffes, Jennifer L., Moore, Jeffery M., Howard, Alan D.

“…HiRISE images together with other recent orbital data from Mars define new characteristics of enigmatic Hesperian-aged deposits in Sirenum Fossae that are…”
Get full text