Publications
Filter Total Items: 915
Distribution and interplay of geologic processes on Titan from Cassini radar data
The Cassini Titan Radar Mapper is providing an unprecedented view of Titan’s surface geology. Here we use Synthetic Aperture Radar (SAR) image swaths (Ta–T30) obtained from October 2004 to December 2007 to infer the geologic processes that have shaped Titan’s surface. These SAR swaths cover about 20% of the surface, at a spatial resolution ranging from ∼350 m to ∼2 km. The SAR data are distributed
Authors
R. M. C. Lopes, E. R. Stofan, R. Peckyno, J. Radebaugh, K. L. Mitchell, Giuseppe Mitri, C. A. Wood, R. L. Kirk, S. D. Wall, J. I. Lunine, A. Hayes, R. Lorenz, Tom Farr, L. Wye, J. Craig, R. J. Ollerenshaw, M. Janssen, A. LeGall, F. Paganelli, R. West, B. Stiles, P. Callahan, Y. Anderson, P. Valora, L. Soderblom
Coregistration of Mars Orbiter Laser Altimeter (MOLA) topography with high-resolution Mars images
Spacecraft continue to send back extraordinary amounts of data from Mars leaving scientists with the considerable task of analyzing an ever-increasing wealth of information. There are abundant uses for coregistered topography and images, but coregistering various datasets can be time-consuming and labor-intensive. We have developed a set of C-shell Unix scripts and Interactive Data Language (IDL)
Authors
Kelly J. Kolb, Chris H. Okubo
Preservation of random megascale events on Mars and Earth: Influence on geologic history: GSA special papers
No abstract available.
Authors
Mary G. Chapman, Laszlo P. Keszthelyi
Introduction to the High Resolution Imaging Science Experiment (HiRISE)
No abstract available.
Authors
Alfred S. McEwen, Kenneth E. Herkenhoff, Laszlo P. Keszthelyi
The Lunar Reconnaissance Orbiter Diviner Lunar Radiometer Experiment
The Diviner Lunar Radiometer Experiment on NASA’s Lunar Reconnaissance Orbiter will be the first instrument to systematically map the global thermal state of the Moon and its diurnal and seasonal variability. Diviner will measure reflected solar and emitted infrared radiation in nine spectral channels with wavelengths ranging from 0.3 to 400 microns. The resulting measurements will enable characte
Authors
D. A. Paige, M. C. Foote, B. T. Greenhagen, J. T. Schofield, S. Calcutt, A. R. Vasavada, D. J. Preston, F. W. Taylor, C. C. Allen, K. Snook, B. M. Jakosky, B. C. Murray, Laurence A. Soderblom, B. Jau, S. Loring, J. Bulharowski, N. E. Bowles, I. R. Thomas, M. T. Sullivan, C. Avis, E. M. De Jong, W. Hartford, D. J. McCleese
Titan's surface at 2.2-cm wavelength imaged by the Cassini RADAR radiometer: Calibration and first results
The first comprehensive calibration and mapping of the thermal microwave emission from Titan's surface is reported based on radiometric data obtained at 2.2-cm wavelength by the passive radiometer included in the Cassini Radar instrument. The data reported were accumulated from 69 separate observational segments in Titan passes from Ta (October 2004) through T30 (May 2007) and include emission fro
Authors
M.A. Janssen, R. D. Lorenz, R. West, F. Paganelli, R.M. Lopes, Randolph L. Kirk, C. Elachi, S. D. Wall, W.T.K. Johnson, Y. Anderson, R.A. Boehmer, P. Callahan, Y. Gim, G.A. Hamilton, K.D. Kelleher, L. Roth, B. Stiles, A. Le Gall
Floods of water and lava in the Columbia River Basin: Analogs for Mars
The Columbia River Basin (CRB) is home to the best studied examples of two of the most spectacular geologic processes on Earth and Mars: flood volcanism and catastrophic water floods. Additionally, features formed by a variety of eolian, glacial, tectonic, and mass-wasting processes can also be seen in the CRB. These terrains provide exceptional terrestrial analogs for the study of similar process
Authors
Laszlo P. Keszthelyi, Victor R. Baker, Windy L. Jaeger, David R. Gaylord, Bruce Bjornstad, Noam Greenbaum, Stephen Self, Thorvaldur Thordarson, Naomi Porat, Marek G. Zreda
Extraterrestrial GIS
No abstract available.
Authors
Trent M. Hare, Randolph L. Kirk, James A. Skinner, Kenneth L. Tanaka
Overview of the magnetic properties experiments on the Mars Exploration Rovers
The Mars Exploration Rovers have accumulated airborne dust on different types of permanent magnets. Images of these magnets document the dynamics of dust capture and removal over time. The strongly magnetic subset of airborne dust appears dark brown to black in Panoramic Camera (Pancam) images, while the weakly magnetic one is bright red. Images returned by the Microscopic Imager reveal the format
Authors
M.B. Madsen, W. Goetz, P. Bertelsen, C.S. Binau, F. Folkmann, H.P. Gunnlaugsson, J.I. Hjollum, S.F. Hviid, J. Jensen, K.M. Kinch, K. Leer, D.E. Madsen, J. Merrison, M. Olsen, H.M. Arneson, J.F. Bell, Ralf Gellert, Kenneth E. Herkenhoff, J. R. Johnson, M. J. Johnson, G. Klingelhofer, E. McCartney, D. W. Ming, R.V. Morris, J.B. Proton, D. Rodionov, M. Sims, S. W. Squyres, T. Wdowiak, A. S. Yen
Martian mud volcanism: Terrestrial analogs and implications for formational scenarios
The geology of Mars and the stratigraphic characteristics of its uppermost crust (mega-regolith) suggest that some of the pervasively-occurring pitted cones, mounds, and flows may have formed through processes akin to terrestrial mud volcanism. A comparison of terrestrial mud volcanism suggests that equivalent Martian processes likely required discrete sedimentary depocenters, volatile-enriched st
Authors
James A. Skinner, A. Mazzini
Deformation band clusters on Mars and implications for subsurface fluid flow
High-resolution imagery reveals unprecedented lines of evidence for the presence of deformation band clusters in layered sedimentary deposits in the equatorial region of Mars. Deformation bands are a class of geologic structural discontinuity that is a precursor to faults in clastic rocks and soils. Clusters of deformation bands, consisting of many hundreds of individual subparallel bands, can act
Authors
Chris Okubo, Richard A. Schultz, Marjorie A. Chan, Goro Komatsu
Photometric changes on Saturn's Titan: Evidence for active cryovolcanism
We report infrared spectrophotometric variability on the surface of Saturn's moon Titan detected in images returned by the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini Saturn Orbiter. The changes were observed at 7°S, 138°W and occurred between October 27, 2005 and January 15, 2006. After that date the surface was unchanged until the most recent observation, March 18, 2006.
Authors
Robert M. Nelson, Lucas W. Kamp, Rosaly M.C. Lopes, Dennis L. Matson, Randolph L. Kirk, Bruce W. Hapke, Stephen D. Wall, Mark D. Boryta, Frank E. Leader, William D. Smythe, Karl L. Mitchell, Kevin H. Baines, Ralf Jaumann, Christophe Sotin, Roger N. Clark, Dale P. Cruikshank, Pierre Drossart, Jonathan I. Lunine, Michel Combes, Giancarlo Bellucci, Jean-Pierre Bibring, Fabrizio Capaccioni, Pricilla Cerroni, Angioletta Coradini, Vittorio Formisano, Gianrico Filacchione, Yves Langevin, Thomas B. McCord, Vito Mennella, Philip D. Nicholson, Bruno Sicardy, Patrick G.J. Irwin, John C. Pearl