Laurence Soderblom, PhD (Former Employee)
Science and Products
Filter Total Items: 137
The evolution of Titan's mid-latitude clouds The evolution of Titan's mid-latitude clouds
Spectra from Cassini's Visual and Infrared Mapping Spectrometer reveal that the horizontal structure, height, and optical depth of Titan's clouds are highly, dynamic. Vigorous cloud centers are seen to rise from the middle to the upper troposphere within 30 minutes and dissipate within the next hour. Their development indicates that Titan's clouds evolve convectively; dissipate through...
Authors
C.A. Griffith, P. Penteado, K. Baines, P. Drossart, J. Barnes, G. Bellucci, J. Bibring, R. Brown, B. Buratti, F. Capaccioni, P. Cerroni, R. Clark, M. Combes, A. Coradini, D. Cruikshank, V. Formisano, R. Jaumann, Y. Langevin, D. Matson, T. McCord, V. Mennella, R. Nelson, P. Nicholson, B. Sicardy, Christophe Sotin, L.A. Soderblom, R. Kursinski
An integrated view of the chemistry and mineralogy of martian soils An integrated view of the chemistry and mineralogy of martian soils
The mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies, and...
Authors
A. Yen, Ralf Gellert, C. Schroder, R.V. Morris, J.F. Bell, A.T. Knudson, B.C. Clark, D. Ming, J.A. Crisp, R. E. Arvidson, D. Blaney, J. Bruckner, P. Christensen, D.J. DesMarais, P.A. De Souza, T.E. Economou, A. Ghosh, B.C. Hahn, Kenneth Herkenhoff, L.A. Haskin, J.A. Hurowitz, B.L. Joliff, J. Johnson, G. Klingelhofer, M.B. Madsen, S. McLennan, H.Y. McSween, L. Richter, R. Rieder, D. Rodionov, Laurence Soderblom, S. Squyres, N.J. Tosca, A. Wang, M. Wyatt, J. Zipfel
Rain, winds and haze during the Huygens probe's descent to Titan's surface Rain, winds and haze during the Huygens probe's descent to Titan's surface
The irreversible conversion of methane into higher hydrocarbons in Titan's stratosphere implies a surface or subsurface methane reservoir. Recent measurements from the cameras aboard the Cassini orbiter fail to see a global reservoir, but the methane and smog in Titan's atmosphere impedes the search for hydrocarbons on the surface. Here we report spectra and high-resolution images...
Authors
M.G. Tomasko, B. Archinal, T. Becker, B. Bezard, M. Bushroe, M. Combes, D. Cook, A. Coustenis, C. De Bergh, L.E. Dafoe, L. Doose, S. Doute, A. Eibl, S. Engel, F. Gliem, B. Grieger, K. Holso, E. Howington-Kraus, E. Karkoschka, H.U. Keller, Randolph Kirk, R. Kramm, M. Kuppers, P. Lanagan, E. Lellouch, M. Lemmon, J. Lunine, E. McFarlane, J. Moores, G.M. Prout, B. Rizk, M. Rosiek, P. Rueffer, S.E. Schroder, B. Schmitt, C. See, P. Smith, Laurence Soderblom, N. Thomas, R. West
Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars
Impure reworked evaporitic sandstones, preserved on Meridiani Planum, Mars, are mixtures of roughly equal amounts of altered siliciclastic debris, of basaltic provenance (40 ± 10% by mass), and chemical constituents, dominated by evaporitic minerals (jarosite, Mg-, Ca-sulfates ± chlorides ± Fe-, Na-sulfates), hematite and possibly secondary silica (60 ± 10%). These chemical constituents...
Authors
S. McLennan, J.F. Bell, W. Calvin, P. Christensen, B.C. Clark, P.A. de Souza, J. Farmer, W. Farrand, D.A. Fike, Ralf Gellert, A. Ghosh, T.D. Glotch, J.P. Grotzinger, B. Hahn, Kenneth Herkenhoff, J.A. Hurowitz, J. Johnson, S.S. Johnson, B. Jolliff, G. Klingelhofer, A.H. Knoll, Z. Learner, M. Malin, H.Y. McSween, J. Pocock, S. Ruff, Laurence Soderblom, S. Squyres, N.J. Tosca, W.A. Watters, M.B. Wyatt, A. Yen
Evidence from Opportunity’s Microscopic Imager for water on Meridiani Planum Evidence from Opportunity’s Microscopic Imager for water on Meridiani Planum
The Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion. Rock outcrops are laminated on a millimeter scale; image mosaics of cross-stratification suggest that some sediments were deposited...
Authors
Kenneth Herkenhoff, S. Squyres, R. Arvidson, D.S. Bass, J. Bell, P. Bertelsen, B. Ehlmann, W. Farrand, Lisa Gaddis, R. Greeley, J. Grotzinger, A. Hayes, S.F. Hviid, J. Johnson, B. Jolliff, K.M. Kinch, A. Knoll, M.B. Madsen, J.N. Maki, S. McLennan, H.Y. McSween, D. Ming, J. Rice, L. Richter, M. Sims, P. Smith, Laurence Soderblom, Nicole Spanovich, R. Sullivan, S. Thompson, T. Wdowiak, C. Weitz, P. Whelley
RADAR: The Cassini Titan Radar Mapper RADAR: The Cassini Titan Radar Mapper
The Cassini RADAR instrument is a multimode 13.8 GHz multiple-beam sensor that can operate as a synthetic-aperture radar (SAR) imager, altimeter, scatterometer, and radiometer. The principal objective of the RADAR is to map the surface of Titan. This will be done in the imaging, scatterometer, and radiometer modes. The RADAR altimeter data will provide information on relative elevations...
Authors
C. Elachi, M.D. Allison, L. Borgarelli, P. Encrenaz, E. Im, M.A. Janssen, W.T.K. Johnson, Randolph Kirk, R. Lorenz, J. I. Lunine, D.O. Muhleman, S.J. Ostro, G. Picardi, F. Posa, C.G. Rapley, L.E. Roth, R. Seu, Laurence Soderblom, S. Vetrella, S. Wall, C. Wood, H. A. Zebker
Textures of the soils and rocks at Gusev Crater from Spirit’s Microscopic Imager Textures of the soils and rocks at Gusev Crater from Spirit’s Microscopic Imager
The Microscopic Imager on the Spirit rover analyzed the textures of the soil and rocks at Gusev crater on Mars at a resolution of 100 micrometers. Weakly bound agglomerates of dust are present in the soil near the Columbia Memorial Station. Some of the brushed or abraded rock surfaces show igneous textures and evidence for alteration rinds, coatings, and veins consistent with secondary
Authors
Kenneth Herkenhoff, S. Squyres, R. Arvidson, D.S. Bass, J. Bell, P. Bertelsen, N.A. Cabrol, Lisa Gaddis, A. Hayes, S.F. Hviid, J. Johnson, K.M. Kinch, M.B. Madsen, J.N. Maki, S. McLennan, H.Y. McSween, J. Rice, M. Sims, P. Smith, Laurence Soderblom, Nicole Spanovich, R. Sullivan, A. Wang
Preparing for THEMIS controlled global Mars mosaics Preparing for THEMIS controlled global Mars mosaics
We have begun work to prepare for producing controlled 2001 Mars Odyssey THEMIS infrared (IR) and visible (VIS) global mosaics of Mars. This effort is being coordinated with colleagues from Arizona State University and on the THEMIS team who plan to address radiometric issues in making such mosaics. We are concentrating on geometric issues. Several areas of investigation are now in...
Authors
Brent Archinal, Lynn A. Weller, Stuart C. Sides, Glen Cushing, Randolph Kirk, Laurence Soderblom, T. Duxbury
In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars
Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate and jarosite) that constitute several tens of percent of the rock by weight, and hematite. Cross-stratification observed in rock outcrops indicates eolian and aqueous transport. Diagenetic...
Authors
S. Squyres, J.P. Grotzinger, R. E. Arvidson, J.F. Bell, W. Calvin, P. Christensen, B.C. Clark, J.A. Crisp, W. Farrand, Kenneth Herkenhoff, J. Johnson, G. Klingelhofer, A.H. Knoll, S. McLennan, H.Y. McSween, R.V. Morris, J. Rice, R. Rieder, Laurence Soderblom
Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site
The soils at the Opportunity site are fine-grained basaltic sands mixed with dust and sulfate-rich outcrop debris. Hematite is concentrated in spherules eroded from the strata. Ongoing saltation exhumes the spherules and their fragments, concentrating them at the surface. Spherules emerge from soils coated, perhaps from subsurface cementation, by salts. Two types of vesicular clasts may...
Authors
Laurence Soderblom, R. Anderson, R. E. Arvidson, J.F. Bell, N.A. Cabrol, W. Calvin, P. Christensen, B.C. Clark, T. Economou, B.L. Ehlmann, W. Farrand, D. Fike, Ralf Gellert, T.D. Glotch, M.P. Golombek, R. Greeley, J.P. Grotzinger, Kenneth Herkenhoff, D.J. Jerolmack, J. Johnson, B. Jolliff, C. Klingelhofer, A.H. Knoll, Z.A. Learner, R. Li, M. Malin, S. McLennan, H.Y. McSween, D. Ming, R.V. Morris, J. Rice, L. Richter, R. Rieder, D. Rodionov, C. Schroder, F.P. Seelos, J.M. Soderblom, S. Squyres, R. Sullivan, W.A. Watters, C.M. Weitz, M.B. Wyatt, A. Yen, J. Zipfel
9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification 9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification
Spectra of Asteroid 9969 Braille in the 1.25-2.6 ??m region returned by the Deep Space 1 (DS1) Mission show a ???10% absorption band centered at 2 ??m, and a reflectance peak at 1.6 ??m. Analysis of these features suggest that the composition of Braille is roughly equal parts pyroxene and olivine. Its spectrum between 0.4 and 2.5 ??m suggests that it is most closely related to the Q...
Authors
B. Buratti, D.T. Britt, L.A. Soderblom, M.D. Hicks, D. Boice, R. Brown, R. Meier, R.M. Nelson, J. Oberst, T.C. Owen, A.S. Rivkin, B.R. Sandel, S. A. Stern, N. Thomas, R.V. Yelle
Localization and physical property experiments conducted by opportunity at Meridiani Planum Localization and physical property experiments conducted by opportunity at Meridiani Planum
The location of the Opportunity landing site was determined to better than 10-m absolute accuracy from analyses of radio tracking data. We determined Rover locations during traverses with an error as small as several centimeters using engineering telemetry and overlapping images. Topographic profiles generated from rover data show that the plains are very smooth from meter- to centimeter...
Authors
R. E. Arvidson, R. Anderson, P. Bartlett, J.F. Bell, P. Christensen, P. Chu, K. Davis, B.L. Ehlmann, M.P. Golombek, S. Gorevan, E.A. Guinness, A. Haldemann, Kenneth Herkenhoff, G. Landis, R. Li, R. Lindemann, D. Ming, T. Myrick, T. Parker, L. Richter, F.P. Seelos, Laurence Soderblom, S. Squyres, R.J. Sullivan, Jim Wilson
Science and Products
Filter Total Items: 137
The evolution of Titan's mid-latitude clouds The evolution of Titan's mid-latitude clouds
Spectra from Cassini's Visual and Infrared Mapping Spectrometer reveal that the horizontal structure, height, and optical depth of Titan's clouds are highly, dynamic. Vigorous cloud centers are seen to rise from the middle to the upper troposphere within 30 minutes and dissipate within the next hour. Their development indicates that Titan's clouds evolve convectively; dissipate through...
Authors
C.A. Griffith, P. Penteado, K. Baines, P. Drossart, J. Barnes, G. Bellucci, J. Bibring, R. Brown, B. Buratti, F. Capaccioni, P. Cerroni, R. Clark, M. Combes, A. Coradini, D. Cruikshank, V. Formisano, R. Jaumann, Y. Langevin, D. Matson, T. McCord, V. Mennella, R. Nelson, P. Nicholson, B. Sicardy, Christophe Sotin, L.A. Soderblom, R. Kursinski
An integrated view of the chemistry and mineralogy of martian soils An integrated view of the chemistry and mineralogy of martian soils
The mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies, and...
Authors
A. Yen, Ralf Gellert, C. Schroder, R.V. Morris, J.F. Bell, A.T. Knudson, B.C. Clark, D. Ming, J.A. Crisp, R. E. Arvidson, D. Blaney, J. Bruckner, P. Christensen, D.J. DesMarais, P.A. De Souza, T.E. Economou, A. Ghosh, B.C. Hahn, Kenneth Herkenhoff, L.A. Haskin, J.A. Hurowitz, B.L. Joliff, J. Johnson, G. Klingelhofer, M.B. Madsen, S. McLennan, H.Y. McSween, L. Richter, R. Rieder, D. Rodionov, Laurence Soderblom, S. Squyres, N.J. Tosca, A. Wang, M. Wyatt, J. Zipfel
Rain, winds and haze during the Huygens probe's descent to Titan's surface Rain, winds and haze during the Huygens probe's descent to Titan's surface
The irreversible conversion of methane into higher hydrocarbons in Titan's stratosphere implies a surface or subsurface methane reservoir. Recent measurements from the cameras aboard the Cassini orbiter fail to see a global reservoir, but the methane and smog in Titan's atmosphere impedes the search for hydrocarbons on the surface. Here we report spectra and high-resolution images...
Authors
M.G. Tomasko, B. Archinal, T. Becker, B. Bezard, M. Bushroe, M. Combes, D. Cook, A. Coustenis, C. De Bergh, L.E. Dafoe, L. Doose, S. Doute, A. Eibl, S. Engel, F. Gliem, B. Grieger, K. Holso, E. Howington-Kraus, E. Karkoschka, H.U. Keller, Randolph Kirk, R. Kramm, M. Kuppers, P. Lanagan, E. Lellouch, M. Lemmon, J. Lunine, E. McFarlane, J. Moores, G.M. Prout, B. Rizk, M. Rosiek, P. Rueffer, S.E. Schroder, B. Schmitt, C. See, P. Smith, Laurence Soderblom, N. Thomas, R. West
Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars
Impure reworked evaporitic sandstones, preserved on Meridiani Planum, Mars, are mixtures of roughly equal amounts of altered siliciclastic debris, of basaltic provenance (40 ± 10% by mass), and chemical constituents, dominated by evaporitic minerals (jarosite, Mg-, Ca-sulfates ± chlorides ± Fe-, Na-sulfates), hematite and possibly secondary silica (60 ± 10%). These chemical constituents...
Authors
S. McLennan, J.F. Bell, W. Calvin, P. Christensen, B.C. Clark, P.A. de Souza, J. Farmer, W. Farrand, D.A. Fike, Ralf Gellert, A. Ghosh, T.D. Glotch, J.P. Grotzinger, B. Hahn, Kenneth Herkenhoff, J.A. Hurowitz, J. Johnson, S.S. Johnson, B. Jolliff, G. Klingelhofer, A.H. Knoll, Z. Learner, M. Malin, H.Y. McSween, J. Pocock, S. Ruff, Laurence Soderblom, S. Squyres, N.J. Tosca, W.A. Watters, M.B. Wyatt, A. Yen
Evidence from Opportunity’s Microscopic Imager for water on Meridiani Planum Evidence from Opportunity’s Microscopic Imager for water on Meridiani Planum
The Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion. Rock outcrops are laminated on a millimeter scale; image mosaics of cross-stratification suggest that some sediments were deposited...
Authors
Kenneth Herkenhoff, S. Squyres, R. Arvidson, D.S. Bass, J. Bell, P. Bertelsen, B. Ehlmann, W. Farrand, Lisa Gaddis, R. Greeley, J. Grotzinger, A. Hayes, S.F. Hviid, J. Johnson, B. Jolliff, K.M. Kinch, A. Knoll, M.B. Madsen, J.N. Maki, S. McLennan, H.Y. McSween, D. Ming, J. Rice, L. Richter, M. Sims, P. Smith, Laurence Soderblom, Nicole Spanovich, R. Sullivan, S. Thompson, T. Wdowiak, C. Weitz, P. Whelley
RADAR: The Cassini Titan Radar Mapper RADAR: The Cassini Titan Radar Mapper
The Cassini RADAR instrument is a multimode 13.8 GHz multiple-beam sensor that can operate as a synthetic-aperture radar (SAR) imager, altimeter, scatterometer, and radiometer. The principal objective of the RADAR is to map the surface of Titan. This will be done in the imaging, scatterometer, and radiometer modes. The RADAR altimeter data will provide information on relative elevations...
Authors
C. Elachi, M.D. Allison, L. Borgarelli, P. Encrenaz, E. Im, M.A. Janssen, W.T.K. Johnson, Randolph Kirk, R. Lorenz, J. I. Lunine, D.O. Muhleman, S.J. Ostro, G. Picardi, F. Posa, C.G. Rapley, L.E. Roth, R. Seu, Laurence Soderblom, S. Vetrella, S. Wall, C. Wood, H. A. Zebker
Textures of the soils and rocks at Gusev Crater from Spirit’s Microscopic Imager Textures of the soils and rocks at Gusev Crater from Spirit’s Microscopic Imager
The Microscopic Imager on the Spirit rover analyzed the textures of the soil and rocks at Gusev crater on Mars at a resolution of 100 micrometers. Weakly bound agglomerates of dust are present in the soil near the Columbia Memorial Station. Some of the brushed or abraded rock surfaces show igneous textures and evidence for alteration rinds, coatings, and veins consistent with secondary
Authors
Kenneth Herkenhoff, S. Squyres, R. Arvidson, D.S. Bass, J. Bell, P. Bertelsen, N.A. Cabrol, Lisa Gaddis, A. Hayes, S.F. Hviid, J. Johnson, K.M. Kinch, M.B. Madsen, J.N. Maki, S. McLennan, H.Y. McSween, J. Rice, M. Sims, P. Smith, Laurence Soderblom, Nicole Spanovich, R. Sullivan, A. Wang
Preparing for THEMIS controlled global Mars mosaics Preparing for THEMIS controlled global Mars mosaics
We have begun work to prepare for producing controlled 2001 Mars Odyssey THEMIS infrared (IR) and visible (VIS) global mosaics of Mars. This effort is being coordinated with colleagues from Arizona State University and on the THEMIS team who plan to address radiometric issues in making such mosaics. We are concentrating on geometric issues. Several areas of investigation are now in...
Authors
Brent Archinal, Lynn A. Weller, Stuart C. Sides, Glen Cushing, Randolph Kirk, Laurence Soderblom, T. Duxbury
In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars
Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate and jarosite) that constitute several tens of percent of the rock by weight, and hematite. Cross-stratification observed in rock outcrops indicates eolian and aqueous transport. Diagenetic...
Authors
S. Squyres, J.P. Grotzinger, R. E. Arvidson, J.F. Bell, W. Calvin, P. Christensen, B.C. Clark, J.A. Crisp, W. Farrand, Kenneth Herkenhoff, J. Johnson, G. Klingelhofer, A.H. Knoll, S. McLennan, H.Y. McSween, R.V. Morris, J. Rice, R. Rieder, Laurence Soderblom
Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site
The soils at the Opportunity site are fine-grained basaltic sands mixed with dust and sulfate-rich outcrop debris. Hematite is concentrated in spherules eroded from the strata. Ongoing saltation exhumes the spherules and their fragments, concentrating them at the surface. Spherules emerge from soils coated, perhaps from subsurface cementation, by salts. Two types of vesicular clasts may...
Authors
Laurence Soderblom, R. Anderson, R. E. Arvidson, J.F. Bell, N.A. Cabrol, W. Calvin, P. Christensen, B.C. Clark, T. Economou, B.L. Ehlmann, W. Farrand, D. Fike, Ralf Gellert, T.D. Glotch, M.P. Golombek, R. Greeley, J.P. Grotzinger, Kenneth Herkenhoff, D.J. Jerolmack, J. Johnson, B. Jolliff, C. Klingelhofer, A.H. Knoll, Z.A. Learner, R. Li, M. Malin, S. McLennan, H.Y. McSween, D. Ming, R.V. Morris, J. Rice, L. Richter, R. Rieder, D. Rodionov, C. Schroder, F.P. Seelos, J.M. Soderblom, S. Squyres, R. Sullivan, W.A. Watters, C.M. Weitz, M.B. Wyatt, A. Yen, J. Zipfel
9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification 9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification
Spectra of Asteroid 9969 Braille in the 1.25-2.6 ??m region returned by the Deep Space 1 (DS1) Mission show a ???10% absorption band centered at 2 ??m, and a reflectance peak at 1.6 ??m. Analysis of these features suggest that the composition of Braille is roughly equal parts pyroxene and olivine. Its spectrum between 0.4 and 2.5 ??m suggests that it is most closely related to the Q...
Authors
B. Buratti, D.T. Britt, L.A. Soderblom, M.D. Hicks, D. Boice, R. Brown, R. Meier, R.M. Nelson, J. Oberst, T.C. Owen, A.S. Rivkin, B.R. Sandel, S. A. Stern, N. Thomas, R.V. Yelle
Localization and physical property experiments conducted by opportunity at Meridiani Planum Localization and physical property experiments conducted by opportunity at Meridiani Planum
The location of the Opportunity landing site was determined to better than 10-m absolute accuracy from analyses of radio tracking data. We determined Rover locations during traverses with an error as small as several centimeters using engineering telemetry and overlapping images. Topographic profiles generated from rover data show that the plains are very smooth from meter- to centimeter...
Authors
R. E. Arvidson, R. Anderson, P. Bartlett, J.F. Bell, P. Christensen, P. Chu, K. Davis, B.L. Ehlmann, M.P. Golombek, S. Gorevan, E.A. Guinness, A. Haldemann, Kenneth Herkenhoff, G. Landis, R. Li, R. Lindemann, D. Ming, T. Myrick, T. Parker, L. Richter, F.P. Seelos, Laurence Soderblom, S. Squyres, R.J. Sullivan, Jim Wilson