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Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars

Open access
Smith, David E., Zuber, Maria T., Frey, Herbert V., Garvin, James B., Head, James W., Muhleman, Duane O., Pettengill, Gordon H., Phillips, Roger J., Solomon, Sean C., Zwally, H. Jay, Banerdt, W. Bruce, Duxbury, Thomas C., Golombek, Matthew P., Lemoine, Frank G., Neumann, Gregory A., Rowlands, David D., Aharonson, Oded, Ford, Peter G., Ivanov, Anton B., Johnson, Catherine L., McGovern, Patrick J., Abshire, James B., Afzal, Robert S., Sun, Xiaoli·2001·Journal of Geophysical Research: Planets

Abstract

The Mars Orbiter Laser Altimeter (MOLA), an instrument on the Mars Global Surveyor spacecraft, has measured the topography, surface roughness, and 1.064‐μm reflectivity of Mars and the heights of volatile and dust clouds. This paper discusses the function of the MOLA instrument and the acquisition, processing, and correction of observations to produce global data sets. The altimeter measurements have been converted to both gridded and spherical harmonic models for the topography and shape of Mars that have vertical and radial accuracies of ∼1 m with respect to the planet's center of mass. The current global topographic grid has a resolution of 1/64° in latitude × 1/32° in longitude (1×2 km 2 at the equator). Reconstruction of the locations of incident laser pulses on the Martian surface appears to be at the 100‐m spatial accuracy level and results in 2 orders of magnitude improvement in the global geodetic grid of Mars. Global maps of optical pulse width indicative of 100‐m‐scale surface roughness and 1.064‐μm reflectivity with an accuracy of 5% have also been obtained.

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Metadata

Authors
Smith, D. E., Zuber, M. T., Frey, H. V., Garvin, J. B., Head, J. W., Muhleman, D. O., Pettengill, G. H., Phillips, R. J., Solomon, S. C., Zwally, H. J., Banerdt, W. B., Duxbury, T. C., Golombek, M. P., Lemoine, F. G., Neumann, G. A., Rowlands, D. D., Aharonson, O., Ford, P. G., Ivanov, A. B., Johnson, C. L., McGovern, P. J., Abshire, J. B., Afzal, R. S., & Sun, X.
Venue
Journal of Geophysical Research: Planets
Published
2001-10
Volume
106
Issue
E10
Pages
23689-23722
ISSN
0148-0227 (ISSN-L)
OpenAlex
W2045323482
Cited by
1,722
References
5
FWCI
25.45
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars. https://app.cochat.ai/papers/10.1029/2000je001364
The paper
Smith, D. E., Zuber, M. T., Frey, H. V., Garvin, J. B., Head, J. W., Muhleman, D. O., Pettengill, G. H., Phillips, R. J., Solomon, S. C., Zwally, H. J., Banerdt, W. B., Duxbury, T. C., Golombek, M. P., Lemoine, F. G., Neumann, G. A., Rowlands, D. D., Aharonson, O., Ford, P. G., Ivanov, A. B., . . . Sun, X. (2001). Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars. Journal of Geophysical Research: Planets. https://doi.org/10.1029/2000je001364

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.