Laurence Soderblom, PhD (Former Employee)
Science and Products
Filter Total Items: 138
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. J. Buratti, D.T. Britt, L.A. Soderblom, M.D. Hicks, D. C. Boice, R. H. 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
Imaging Borrelly Imaging Borrelly
The nucleus, coma, and dust jets of short-period Comet 19P/Borrelly were imaged from the Deep Space 1 spacecraft during its close flyby in September 2001. A prominent jet dominated the near-nucleus coma and emanated roughly normal to the long axis of nucleus from a broad central cavity. We show it to have remained fixed in position for more than 34 hr, much longer than the 26-hr rotation...
Authors
Laurence A. Soderblom, D. C. Boice, D.T. Britt, R. H. Brown, B. J. Buratti, Randolph L. Kirk, M. Lee, R.M. Nelson, J. Oberst, B.R. Sandel, S. A. Stern, N. Thomas, R.V. Yelle
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. W. Squyres, J.P. Grotzinger, R. E. Arvidson, J.F. Bell, W. Calvin, P. R. Christensen, B. C. Clark, J.A. Crisp, W. H. Farrand, Kenneth E. Herkenhoff, J. R. Johnson, G. Klingelhofer, A.H. Knoll, S. M. McLennan, H.Y. McSween, R.V. Morris, J. W. Rice, R. Rieder, Laurence A. Soderblom
The opportunity Rover's Athena science investigation at Meridiani Planum, Mars The opportunity Rover's Athena science investigation at Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface lag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat...
Authors
S. W. Squyres, R. E. Arvidson, J.F. Bell, J. Bruckner, N.A. Cabrol, W. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W. Farrand, W. Folkner, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, L. Haskin, Kenneth E. Herkenhoff, S. Hviid, J. Johnson, G. Klingelhofer, A.H. Knoll, G. Landis, M. Lemmon, R. Li, M.B. Madsen, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice, L. Richter, R. Rieder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, H. Wanke, T. Wdowiak, M. Wolff, A. Yen
Are the circular, dark features on Comet Borrelly's surface albedo variations or pits? Are the circular, dark features on Comet Borrelly's surface albedo variations or pits?
The highest resolution images of Comet 19P/Borrelly show many dark features which, upon casual inspection, appear to be low albedo markings, but which may also be shadows or other photometric variations caused by a depression in the local topography. In order to distinguish between these two possible interpretations we conducted a photometric analysis of three of the most prominent of...
Authors
R.M. Nelson, L.A. Soderblom, B.W. Hapke
Formation of jets in Comet 19P/Borrelly by subsurface geysers Formation of jets in Comet 19P/Borrelly by subsurface geysers
Observations of the inner coma of Comet 19P/Borrelly with the camera on the Deep Space 1 spacecraft revealed several highly collimated dust jets emanating from the nucleus. The observed jets can be produced by acceleration of evolved gas from a subsurface cavity through a narrow orifice to the surface. As long as the cavity is larger than the orifice, the pressure in the cavity will be...
Authors
R.V. Yelle, L.A. Soderblom, J.R. Jokipii
The Spirit Rover's Athena science investigation at Gusev crater, Mars The Spirit Rover's Athena science investigation at Gusev crater, Mars
The Mars Exploration Rover Spirit and its Athena science payload have been used to investigate a landing site in Gusev crater. Gusev is hypothesized to be the site of a former take, but no clear evidence for lacustrine sedimentation has been found to date. Instead, the dominant lithology is basalt, and the dominant geologic processes are impact events and eolian transport. Many rocks...
Authors
S. W. Squyres, R. E. Arvidson, J.F. Bell, J. Bruckner, N.A. Cabrol, W. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W. Farrand, W. Folkner, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, L. Haskin, Kenneth E. Herkenhoff, S. Hviid, J. Johnson, G. Klingelhofer, A. Knoll, G. Landis, M. Lemmon, R. Li, M.B. Madsen, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice, L. Richter, R. Rieder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, H. Wanke, T. Wdowiak, M. Wolff, A. Yen
Pancam multispectral imaging results from the Spirit Rover at Gusev crater Pancam multispectral imaging results from the Spirit Rover at Gusev crater
Panoramic Camera images at Gusev crater reveal a rock-strewn surface interspersed with high- to moderate-albedo fine-grained deposits occurring in part as drifts or in small circular swales or hollows. Optically thick coatings of fine-grained ferric iron-rich dust dominate most bright soil and rock surfaces. Spectra of some darker rock surfaces and rock regions exposed by brushing or...
Authors
J.F. Bell, S. W. Squyres, R. E. Arvidson, H.M. Arneson, D. Bass, D. Blaney, N. Cabrol, W. Calvin, J. Farmer, W. H. Farrand, W. Goetz, M. Golombek, J. A. Grant, R. Greeley, E. Guinness, A. G. Hayes, M.Y.H. Hubbard, Kenneth E. Herkenhoff, M. J. Johnson, J. R. Johnson, J. Joseph, K.M. Kinch, M.T. Lemmon, R. Li, M.B. Madsen, J.N. Maki, M. Malin, E. McCartney, S. McLennan, H.Y. McSween, D. W. Ming, J.E. Moersch, R.V. Morris, E.Z.N. Dobrea, T. J. Parker, J. Proton, J. W. Rice, F. Seelos, J. Soderblom, Laurence A. Soderblom, J. N. Sohl-Dickstein, R.J. Sullivan, M.J. Wolff, A. Wang
Short-wavelength infrared (1.3-2.6 μm) observations of the nucleus of Comet 19P/Borrelly Short-wavelength infrared (1.3-2.6 μm) observations of the nucleus of Comet 19P/Borrelly
During the last two minutes before closest approach of Deep Space 1 to Comet 19P/Borrelly, a long exposure was made with the short-wavelength infrared (SWIR) imaging spectrometer. The observation yielded 46 spectra covering 1.3–2.6 μm; the footprint of each spectrum was ∼160 m × width of the nucleus. Borrelly's highly variegated and extremely dark 8-km-long nucleus exhibits a strong red...
Authors
Laurence A. Soderblom, D.T. Britt, R. H. Brown, B. J. Buratti, Randolph L. Kirk, T.C. Owen, R.V. Yelle
The nucleus of Comet Borrelly: A study of morphology and surface brightness The nucleus of Comet Borrelly: A study of morphology and surface brightness
Stereo images obtained during the DS1 flyby were analyzed to derive a topographic model for the nucleus of Comet 19P/Borrelly for morphologic and photometric studies. The elongated nucleus has an overall concave shape, resembling a peanut, with the lower end tilted towards the camera. The bimodal character of surface-slopes and curvatures support the idea that the nucleus is a...
Authors
J. Oberst, Elpitha Howington-Kraus, Randolph L. Kirk, Laurence A. Soderblom, B. Buratti, M. Hicks, R. Nelson, D. Britt
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. C. Anderson, P. Bartlett, J.F. Bell, P. R. Christensen, P. Chu, K. Davis, B.L. Ehlmann, M.P. Golombek, S. Gorevan, E.A. Guinness, A. F. C. Haldemann, Kenneth E. Herkenhoff, G. Landis, R. Li, R. Lindemann, D. W. Ming, T. Myrick, T. Parker, L. Richter, F.P. Seelos, Laurence A. Soderblom, S. W. Squyres, R.J. Sullivan, Jim Wilson
Athena Microscopic Imager investigation Athena Microscopic Imager investigation
The Athena science payload on the Mars Exploration Rovers (MER) includes the Microscopic Imager (MI). The MI is a fixed‐focus camera mounted on the end of an extendable instrument arm, the Instrument Deployment Device (IDD). The MI was designed to acquire images at a spatial resolution of 30 microns/pixel over a broad spectral range (400–700 nm). The MI uses the same electronics design...
Authors
Kenneth E. Herkenhoff, S. W. Squyres, J.F. Bell, J.N. Maki, H.M. Arneson, P. Bertelsen, D.I. Brown, S.A. Collins, A. Dingizian, S.T. Elliott, W. Goetz, E.C. Hagerott, A. G. Hayes, M. J. Johnson, Randolph L. Kirk, S. McLennan, R.V. Morris, L.M. Scherr, M.A. Schwochert, L.R. Shiraishi, G.H. Smith, Laurence A. Soderblom, J. N. Sohl-Dickstein, M.V. Wadsworth
Science and Products
Filter Total Items: 138
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. J. Buratti, D.T. Britt, L.A. Soderblom, M.D. Hicks, D. C. Boice, R. H. 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
Imaging Borrelly Imaging Borrelly
The nucleus, coma, and dust jets of short-period Comet 19P/Borrelly were imaged from the Deep Space 1 spacecraft during its close flyby in September 2001. A prominent jet dominated the near-nucleus coma and emanated roughly normal to the long axis of nucleus from a broad central cavity. We show it to have remained fixed in position for more than 34 hr, much longer than the 26-hr rotation...
Authors
Laurence A. Soderblom, D. C. Boice, D.T. Britt, R. H. Brown, B. J. Buratti, Randolph L. Kirk, M. Lee, R.M. Nelson, J. Oberst, B.R. Sandel, S. A. Stern, N. Thomas, R.V. Yelle
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. W. Squyres, J.P. Grotzinger, R. E. Arvidson, J.F. Bell, W. Calvin, P. R. Christensen, B. C. Clark, J.A. Crisp, W. H. Farrand, Kenneth E. Herkenhoff, J. R. Johnson, G. Klingelhofer, A.H. Knoll, S. M. McLennan, H.Y. McSween, R.V. Morris, J. W. Rice, R. Rieder, Laurence A. Soderblom
The opportunity Rover's Athena science investigation at Meridiani Planum, Mars The opportunity Rover's Athena science investigation at Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface lag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat...
Authors
S. W. Squyres, R. E. Arvidson, J.F. Bell, J. Bruckner, N.A. Cabrol, W. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W. Farrand, W. Folkner, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, L. Haskin, Kenneth E. Herkenhoff, S. Hviid, J. Johnson, G. Klingelhofer, A.H. Knoll, G. Landis, M. Lemmon, R. Li, M.B. Madsen, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice, L. Richter, R. Rieder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, H. Wanke, T. Wdowiak, M. Wolff, A. Yen
Are the circular, dark features on Comet Borrelly's surface albedo variations or pits? Are the circular, dark features on Comet Borrelly's surface albedo variations or pits?
The highest resolution images of Comet 19P/Borrelly show many dark features which, upon casual inspection, appear to be low albedo markings, but which may also be shadows or other photometric variations caused by a depression in the local topography. In order to distinguish between these two possible interpretations we conducted a photometric analysis of three of the most prominent of...
Authors
R.M. Nelson, L.A. Soderblom, B.W. Hapke
Formation of jets in Comet 19P/Borrelly by subsurface geysers Formation of jets in Comet 19P/Borrelly by subsurface geysers
Observations of the inner coma of Comet 19P/Borrelly with the camera on the Deep Space 1 spacecraft revealed several highly collimated dust jets emanating from the nucleus. The observed jets can be produced by acceleration of evolved gas from a subsurface cavity through a narrow orifice to the surface. As long as the cavity is larger than the orifice, the pressure in the cavity will be...
Authors
R.V. Yelle, L.A. Soderblom, J.R. Jokipii
The Spirit Rover's Athena science investigation at Gusev crater, Mars The Spirit Rover's Athena science investigation at Gusev crater, Mars
The Mars Exploration Rover Spirit and its Athena science payload have been used to investigate a landing site in Gusev crater. Gusev is hypothesized to be the site of a former take, but no clear evidence for lacustrine sedimentation has been found to date. Instead, the dominant lithology is basalt, and the dominant geologic processes are impact events and eolian transport. Many rocks...
Authors
S. W. Squyres, R. E. Arvidson, J.F. Bell, J. Bruckner, N.A. Cabrol, W. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W. Farrand, W. Folkner, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, L. Haskin, Kenneth E. Herkenhoff, S. Hviid, J. Johnson, G. Klingelhofer, A. Knoll, G. Landis, M. Lemmon, R. Li, M.B. Madsen, M. C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice, L. Richter, R. Rieder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, H. Wanke, T. Wdowiak, M. Wolff, A. Yen
Pancam multispectral imaging results from the Spirit Rover at Gusev crater Pancam multispectral imaging results from the Spirit Rover at Gusev crater
Panoramic Camera images at Gusev crater reveal a rock-strewn surface interspersed with high- to moderate-albedo fine-grained deposits occurring in part as drifts or in small circular swales or hollows. Optically thick coatings of fine-grained ferric iron-rich dust dominate most bright soil and rock surfaces. Spectra of some darker rock surfaces and rock regions exposed by brushing or...
Authors
J.F. Bell, S. W. Squyres, R. E. Arvidson, H.M. Arneson, D. Bass, D. Blaney, N. Cabrol, W. Calvin, J. Farmer, W. H. Farrand, W. Goetz, M. Golombek, J. A. Grant, R. Greeley, E. Guinness, A. G. Hayes, M.Y.H. Hubbard, Kenneth E. Herkenhoff, M. J. Johnson, J. R. Johnson, J. Joseph, K.M. Kinch, M.T. Lemmon, R. Li, M.B. Madsen, J.N. Maki, M. Malin, E. McCartney, S. McLennan, H.Y. McSween, D. W. Ming, J.E. Moersch, R.V. Morris, E.Z.N. Dobrea, T. J. Parker, J. Proton, J. W. Rice, F. Seelos, J. Soderblom, Laurence A. Soderblom, J. N. Sohl-Dickstein, R.J. Sullivan, M.J. Wolff, A. Wang
Short-wavelength infrared (1.3-2.6 μm) observations of the nucleus of Comet 19P/Borrelly Short-wavelength infrared (1.3-2.6 μm) observations of the nucleus of Comet 19P/Borrelly
During the last two minutes before closest approach of Deep Space 1 to Comet 19P/Borrelly, a long exposure was made with the short-wavelength infrared (SWIR) imaging spectrometer. The observation yielded 46 spectra covering 1.3–2.6 μm; the footprint of each spectrum was ∼160 m × width of the nucleus. Borrelly's highly variegated and extremely dark 8-km-long nucleus exhibits a strong red...
Authors
Laurence A. Soderblom, D.T. Britt, R. H. Brown, B. J. Buratti, Randolph L. Kirk, T.C. Owen, R.V. Yelle
The nucleus of Comet Borrelly: A study of morphology and surface brightness The nucleus of Comet Borrelly: A study of morphology and surface brightness
Stereo images obtained during the DS1 flyby were analyzed to derive a topographic model for the nucleus of Comet 19P/Borrelly for morphologic and photometric studies. The elongated nucleus has an overall concave shape, resembling a peanut, with the lower end tilted towards the camera. The bimodal character of surface-slopes and curvatures support the idea that the nucleus is a...
Authors
J. Oberst, Elpitha Howington-Kraus, Randolph L. Kirk, Laurence A. Soderblom, B. Buratti, M. Hicks, R. Nelson, D. Britt
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. C. Anderson, P. Bartlett, J.F. Bell, P. R. Christensen, P. Chu, K. Davis, B.L. Ehlmann, M.P. Golombek, S. Gorevan, E.A. Guinness, A. F. C. Haldemann, Kenneth E. Herkenhoff, G. Landis, R. Li, R. Lindemann, D. W. Ming, T. Myrick, T. Parker, L. Richter, F.P. Seelos, Laurence A. Soderblom, S. W. Squyres, R.J. Sullivan, Jim Wilson
Athena Microscopic Imager investigation Athena Microscopic Imager investigation
The Athena science payload on the Mars Exploration Rovers (MER) includes the Microscopic Imager (MI). The MI is a fixed‐focus camera mounted on the end of an extendable instrument arm, the Instrument Deployment Device (IDD). The MI was designed to acquire images at a spatial resolution of 30 microns/pixel over a broad spectral range (400–700 nm). The MI uses the same electronics design...
Authors
Kenneth E. Herkenhoff, S. W. Squyres, J.F. Bell, J.N. Maki, H.M. Arneson, P. Bertelsen, D.I. Brown, S.A. Collins, A. Dingizian, S.T. Elliott, W. Goetz, E.C. Hagerott, A. G. Hayes, M. J. Johnson, Randolph L. Kirk, S. McLennan, R.V. Morris, L.M. Scherr, M.A. Schwochert, L.R. Shiraishi, G.H. Smith, Laurence A. Soderblom, J. N. Sohl-Dickstein, M.V. Wadsworth