Distribution of mid-latitude ground ice on mars from new impact craters

Shane Byrne; Colin M. Dundas; Megan R. Kennedy; Michael T. Mellon; Alfred S. McEwen; Selby C. Cull; Ingrid J. Daubar; David E. Shean; Kimberly D. Seelos; Scott L. Murchie; Bruce A. Cantor; Raymond E. Arvidson; Kenneth S. Edgett; Andreas Reufer; Nicolas Thomas; Tanya N. Harrison; Liliya V. Posiolova; Frank P. Seelos

doi:10.1126/science.1175307

Distribution of mid-latitude ground ice on mars from new impact craters

Shane Byrne, Colin M. Dundas, Megan R. Kennedy, Michael T. Mellon, Alfred S. McEwen, Selby C. Cull, Ingrid J. Daubar, David E. Shean, Kimberly D. Seelos, Scott L. Murchie, Bruce A. Cantor, Raymond E. Arvidson, Kenneth S. Edgett, Andreas Reufer, Nicolas Thomas, Tanya N. Harrison, Liliya V. Posiolova, Frank P. Seelos

Research output: Contribution to journal › Article › peer-review

249 Scopus citations

Abstract

New impact craters at five sites in the martian mid-latitudes excavated material from depths of decimeters that has a brightness and color indicative of water ice. Near-infrared spectra of the largest example confirm this composition, and repeated imaging showed fading over several months, as expected for sublimating ice. Thermal models of one site show that millimeters of sublimation occurred during this fading period, indicating clean ice rather than ice in soil pores. Our derived ice-table depths are consistent with models using higher long-term average atmospheric water vapor content than present values. Craters at most of these sites may have excavated completely through this clean ice, probing the ice table to previously unsampled depths of meters and revealing substantial heterogeneity in the vertical distribution of the ice itself.

Original language	English (US)
Pages (from-to)	1674-1676
Number of pages	3
Journal	Science
Volume	325
Issue number	5948
DOIs	https://doi.org/10.1126/science.1175307
State	Published - 2009

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Byrne, S., Dundas, C. M., Kennedy, M. R., Mellon, M. T., McEwen, A. S., Cull, S. C., Daubar, I. J., Shean, D. E., Seelos, K. D., Murchie, S. L., Cantor, B. A., Arvidson, R. E., Edgett, K. S., Reufer, A., Thomas, N., Harrison, T. N., Posiolova, L. V., & Seelos, F. P. (2009). Distribution of mid-latitude ground ice on mars from new impact craters. Science, 325(5948), 1674-1676. https://doi.org/10.1126/science.1175307

Byrne, S, Dundas, CM, Kennedy, MR, Mellon, MT, McEwen, AS, Cull, SC, Daubar, IJ, Shean, DE, Seelos, KD, Murchie, SL, Cantor, BA, Arvidson, RE, Edgett, KS, Reufer, A, Thomas, N, Harrison, TN, Posiolova, LV & Seelos, FP 2009, 'Distribution of mid-latitude ground ice on mars from new impact craters', Science, vol. 325, no. 5948, pp. 1674-1676. https://doi.org/10.1126/science.1175307

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title = "Distribution of mid-latitude ground ice on mars from new impact craters",

abstract = "New impact craters at five sites in the martian mid-latitudes excavated material from depths of decimeters that has a brightness and color indicative of water ice. Near-infrared spectra of the largest example confirm this composition, and repeated imaging showed fading over several months, as expected for sublimating ice. Thermal models of one site show that millimeters of sublimation occurred during this fading period, indicating clean ice rather than ice in soil pores. Our derived ice-table depths are consistent with models using higher long-term average atmospheric water vapor content than present values. Craters at most of these sites may have excavated completely through this clean ice, probing the ice table to previously unsampled depths of meters and revealing substantial heterogeneity in the vertical distribution of the ice itself.",

author = "Shane Byrne and Dundas, {Colin M.} and Kennedy, {Megan R.} and Mellon, {Michael T.} and McEwen, {Alfred S.} and Cull, {Selby C.} and Daubar, {Ingrid J.} and Shean, {David E.} and Seelos, {Kimberly D.} and Murchie, {Scott L.} and Cantor, {Bruce A.} and Arvidson, {Raymond E.} and Edgett, {Kenneth S.} and Andreas Reufer and Nicolas Thomas and Harrison, {Tanya N.} and Posiolova, {Liliya V.} and Seelos, {Frank P.}",

year = "2009",

doi = "10.1126/science.1175307",

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AU - Byrne, Shane

AU - Dundas, Colin M.

AU - Kennedy, Megan R.

AU - Mellon, Michael T.

AU - McEwen, Alfred S.

AU - Cull, Selby C.

AU - Daubar, Ingrid J.

AU - Shean, David E.

AU - Seelos, Kimberly D.

AU - Murchie, Scott L.

AU - Cantor, Bruce A.

AU - Arvidson, Raymond E.

AU - Edgett, Kenneth S.

AU - Reufer, Andreas

AU - Thomas, Nicolas

AU - Harrison, Tanya N.

AU - Posiolova, Liliya V.

AU - Seelos, Frank P.

PY - 2009

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AB - New impact craters at five sites in the martian mid-latitudes excavated material from depths of decimeters that has a brightness and color indicative of water ice. Near-infrared spectra of the largest example confirm this composition, and repeated imaging showed fading over several months, as expected for sublimating ice. Thermal models of one site show that millimeters of sublimation occurred during this fading period, indicating clean ice rather than ice in soil pores. Our derived ice-table depths are consistent with models using higher long-term average atmospheric water vapor content than present values. Craters at most of these sites may have excavated completely through this clean ice, probing the ice table to previously unsampled depths of meters and revealing substantial heterogeneity in the vertical distribution of the ice itself.

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Distribution of mid-latitude ground ice on mars from new impact craters

Abstract

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