Publications
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The compositions of the lunar crust and upper mantle: Spectral analysis of the inner rings of lunar impact basins The compositions of the lunar crust and upper mantle: Spectral analysis of the inner rings of lunar impact basins
The innermost ring in impact basins exposes material originating from various depths, and can be used to study the composition of the lunar crust with depth. In this study, we conduct quantitative mineralogical analyses of the innermost ring in 13 lunar impact basins using reflectance data from the Kaguya Multiband Imager and radiative transfer modeling. We use results from recent...
Authors
Myriam Lemelin, Paul G. Lucey, Katarina Miljkovic, Lisa R. Gaddis, Trent M. Hare, Makiko Ohtake
The formation of gullies on Mars today The formation of gullies on Mars today
A decade of high-resolution monitoring has revealed extensive activity in fresh Martian gullies. Flows within the gullies are diverse: they can be relatively light, neutral or dark, colourful or bland, and range from superficial deposits to 10 m-scale topographic changes. We observed erosion and transport of material within gullies, new terraces, freshly eroded channel segments...
Authors
Colin M. Dundas, Alfred S. McEwen, Serina Diniega, Candice J. Hansen, Jim N. McElwaince
The flood lavas of Kasei Valles, Mars The flood lavas of Kasei Valles, Mars
Both the northern and southern arms of Kasei Valles are occupied by platy-ridged flood lavas. We have mapped these flows and examined their morphology to better understand their emplacement. The lavas were emplaced as high-flux, turbulent flows (exceeding 106 m3 s−1). Lava in southern Kasei Valles can be traced back up onto the Tharsis rise, which is also the likely source of lavas in...
Authors
Colin M. Dundas, Glen E. Cushing, Laszlo P. Keszthelyi
The NASA Roadmap to Ocean Worlds The NASA Roadmap to Ocean Worlds
In this article, we summarize the work of the NASA Outer Planets Assessment Group (OPAG) Roadmaps to Ocean Worlds (ROW) group. The aim of this group is to assemble the scientific framework that will guide the exploration of ocean worlds, and to identify and prioritize science objectives for ocean worlds over the next several decades. The overarching goal of an Ocean Worlds exploration...
Authors
A. Noble Hendrix, T. Hurford, L.M. Barge, Michael T. Bland, J.S. Bowman, W. Brinckerhoff, B. J. Buratti, M. Cable, J. C. Castillo-Rogez, G. C. Collins, S. Diniega, C.R. German, A.G. Hayes, T.M. Hoehler, S. Mehran Hosseini, C. Howett, A.S. McEwen, C. Neish, M. Neveu, T.A. Nordheim, G.W. Patterson, Donald A. Patthoff, C. Phillips, A. Rhoden, B. Schmidt, K. Singer, J. M. Soderblom, S.D. Vance
Revisiting the Apollo photogrammetric mapping system Revisiting the Apollo photogrammetric mapping system
The integrated photogrammetric mapping system flown on the last three Apollo lunar missions (15, 16, and 17) in 1971 and 1972 incorporated a Metric (mapping) Camera, a high-resolution Panoramic Camera, and a star camera and laser altimeter to provide support data. The U.S. Geological Survey’s Astrogeology Science Center, the Intelligent Robotics Group of the NASA Ames Research Center...
Authors
Kenneth Edmundson, Oleg Alexandrov, Brent A. Archinal, Kris J. Becker, Tammy L Becker, Jesse Mapel, Zachary M. Moratto, Ara V. Nefian, Janet Richie, Mark S. Robinson, Makayla Shepherd, John Shinaman, Ethan Smith
Impact cratering of Mercury Impact cratering of Mercury
No abstract available.
Authors
Clark R. Chapman, David M. H. Baker, Olivier S. Barnouin, Caleb I. Fassett, Simone Marchi, William Merline, Lillian R. Ostrach, Louise Prockter, Robert G. Strom
The volcanic character of Mercury The volcanic character of Mercury
No abstract available.
Authors
Paul K. Byrne, Jennifer L Whitten, Christian Klimczak, Francis M. McCubbin, Lillian R. Ostrach
Overview of spirit microscopic imager results Overview of spirit microscopic imager results
This paper provides an overview of Mars Exploration Rover Spirit Microscopic Imager (MI) operations and the calibration, processing, and analysis of MI data. The focus of this overview is on the last five Earth years (2005–2010) of Spirit's mission in Gusev crater, supplementing the previous overview of the first 450 sols of the Spirit MI investigation. Updates to radiometric calibration...
Authors
Kenneth E. Herkenhoff, Steve W Squyres, Raymond E. Arvidson, Shoshanna B Cole, Rob Sullivan, Aileen Yingst, Nathalie Cabrol, Ella Lee, Janet Richie, Robert M. Sucharski, Fred J. Calef, James F. Bell, Mary Chapman, Paul Geissler, Lauren A. Edgar, Brenda Franklin, Joel A. Hurowitz, Elsa Jensen, Jeffrey R. Johnson, Randolph L. Kirk, Peter Lanagan, Kevin Mullins, Craig Leff, Justin Maki, Bonnie L. Redding, Melissa Rice, Michael H. Sims, Annette Sunda, Nicole Spanovich, Richard Springer, Laurence A. Soderblom, Alicia Vaughan
Degradation of 100‐m‐scale rocky ejecta craters at the InSight Landing Site on Mars and implications for surface processes and erosion rates in the hesperian and amazonian Degradation of 100‐m‐scale rocky ejecta craters at the InSight Landing Site on Mars and implications for surface processes and erosion rates in the hesperian and amazonian
Rocky ejecta craters (RECs) at the Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) landing site on Elysium Planitia, Mars, provide constraints on crater modification and rates for the Hesperian and Amazonian. The RECs are between 10 m and 1.2 km in diameter and exhibit five classes of preservation. Class 1 represents pristine craters with sharp...
Authors
J. Sweeney, N. H Warner, V. Ganti, Matthew P. Golombek, M. P. Lamb, Robin L. Fergason, Randolph L. Kirk
Correcting spacecraft jitter in HiRISE images Correcting spacecraft jitter in HiRISE images
Mechanical oscillations or vibrations on spacecraft, also called pointing jitter, cause geometric distortions and/or smear in high-resolution digital images acquired from orbit. Geometric distortion is especially a problem with pushbroom sensors, such as the High Resolution Imaging Science Experiment (HiRISE) instrument on-board the Mars Reconnaissance Orbiter (MRO). Geometric...
Authors
S.S. Sutton, A.K. Boyd, Randolph L. Kirk, Debbie Cook, Jean Backer, A. Fennema, R. Heyd, A.S. McEwen, S.D. Mirchandani
Mars global digital dune database (MGD3)—Composition, stability, and thermal inertia Mars global digital dune database (MGD3)—Composition, stability, and thermal inertia
The Mars Global Digital Dune Database (MGD3) is an online repository that has catalogued dune fields larger than 1 km2 located between latitudes 90° N. and 90° S. The work presented here expands upon previous MGD3 open-file reports, with a new emphasis upon characterizing dune fields through composition, stability, and thermal inertia. Included in this latest addition is a detailed...
Authors
Amber L. Gullikson, Rosalyn K. Hayward, Timothy N. Titus, Heather Charles, Lori K. Fenton, Rachael H. Hoover, Nathaniel E. Putzig
Cryovolcanic rates on Ceres revealed by topography Cryovolcanic rates on Ceres revealed by topography
Cryovolcanism, defined here as the extrusion of icy material from depth, may be an important planetary phenomenon in shaping the surfaces of many worlds in the outer Solar System and revealing their thermal histories1,2,3. However, the physics, chemistry and ubiquity of this geologic process remain poorly understood, especially in comparison to the better-studied silicate volcanism on...
Authors
M. M. Sori, H. G. Sizemore, S. Byrne, A. M. Bramson, Michael T. Bland, N. T. Stein, C. T. Russell