Seasonal erosion and restoration of Mars' northern polar dunes

C. J. Hansen, M. Bourke, N. T. Bridges, Shane Byrne, C. Colon, S. Diniega, C. Dundas, K. Herkenhoff, Alfred S. McEwen, M. Mellon, G. Portyankina, N. Thomas

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

Despite radically different environmental conditions, terrestrial and martian dunes bear a strong resemblance, indicating that the basic processes of saltation and grainfall (sand avalanching down the dune slipface) operate on both worlds. Here, we show that martian dunes are subject to an additional modification process not found on Earth: springtime sublimation of Mars' CO 2 seasonal polar caps. Numerous dunes in Mars' north polar region have experienced morphological changes within a Mars year, detected in images acquired by the High-Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter. Dunes show new alcoves, gullies, and dune apron extension. This is followed by remobilization of the fresh deposits by the wind, forming ripples and erasing gullies. The widespread nature of these rapid changes, and the pristine appearance of most dunes in the area, implicates active sand transport in the vast polar erg in Mars' current climate.

Original languageEnglish (US)
Pages (from-to)575-578
Number of pages4
JournalScience
Volume331
Issue number6017
DOIs
StatePublished - Feb 4 2011

Fingerprint

Mars
Sublimation
Cold Climate
Active Biological Transport
Carbon Monoxide
Climate

ASJC Scopus subject areas

  • General

Cite this

Hansen, C. J., Bourke, M., Bridges, N. T., Byrne, S., Colon, C., Diniega, S., ... Thomas, N. (2011). Seasonal erosion and restoration of Mars' northern polar dunes. Science, 331(6017), 575-578. https://doi.org/10.1126/science.1197636

Seasonal erosion and restoration of Mars' northern polar dunes. / Hansen, C. J.; Bourke, M.; Bridges, N. T.; Byrne, Shane; Colon, C.; Diniega, S.; Dundas, C.; Herkenhoff, K.; McEwen, Alfred S.; Mellon, M.; Portyankina, G.; Thomas, N.

In: Science, Vol. 331, No. 6017, 04.02.2011, p. 575-578.

Research output: Contribution to journalArticle

Hansen, CJ, Bourke, M, Bridges, NT, Byrne, S, Colon, C, Diniega, S, Dundas, C, Herkenhoff, K, McEwen, AS, Mellon, M, Portyankina, G & Thomas, N 2011, 'Seasonal erosion and restoration of Mars' northern polar dunes', Science, vol. 331, no. 6017, pp. 575-578. https://doi.org/10.1126/science.1197636
Hansen CJ, Bourke M, Bridges NT, Byrne S, Colon C, Diniega S et al. Seasonal erosion and restoration of Mars' northern polar dunes. Science. 2011 Feb 4;331(6017):575-578. https://doi.org/10.1126/science.1197636
Hansen, C. J. ; Bourke, M. ; Bridges, N. T. ; Byrne, Shane ; Colon, C. ; Diniega, S. ; Dundas, C. ; Herkenhoff, K. ; McEwen, Alfred S. ; Mellon, M. ; Portyankina, G. ; Thomas, N. / Seasonal erosion and restoration of Mars' northern polar dunes. In: Science. 2011 ; Vol. 331, No. 6017. pp. 575-578.
@article{08542990539948c2b547016658a83493,
title = "Seasonal erosion and restoration of Mars' northern polar dunes",
abstract = "Despite radically different environmental conditions, terrestrial and martian dunes bear a strong resemblance, indicating that the basic processes of saltation and grainfall (sand avalanching down the dune slipface) operate on both worlds. Here, we show that martian dunes are subject to an additional modification process not found on Earth: springtime sublimation of Mars' CO 2 seasonal polar caps. Numerous dunes in Mars' north polar region have experienced morphological changes within a Mars year, detected in images acquired by the High-Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter. Dunes show new alcoves, gullies, and dune apron extension. This is followed by remobilization of the fresh deposits by the wind, forming ripples and erasing gullies. The widespread nature of these rapid changes, and the pristine appearance of most dunes in the area, implicates active sand transport in the vast polar erg in Mars' current climate.",
author = "Hansen, {C. J.} and M. Bourke and Bridges, {N. T.} and Shane Byrne and C. Colon and S. Diniega and C. Dundas and K. Herkenhoff and McEwen, {Alfred S.} and M. Mellon and G. Portyankina and N. Thomas",
year = "2011",
month = "2",
day = "4",
doi = "10.1126/science.1197636",
language = "English (US)",
volume = "331",
pages = "575--578",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6017",

}

TY - JOUR

T1 - Seasonal erosion and restoration of Mars' northern polar dunes

AU - Hansen, C. J.

AU - Bourke, M.

AU - Bridges, N. T.

AU - Byrne, Shane

AU - Colon, C.

AU - Diniega, S.

AU - Dundas, C.

AU - Herkenhoff, K.

AU - McEwen, Alfred S.

AU - Mellon, M.

AU - Portyankina, G.

AU - Thomas, N.

PY - 2011/2/4

Y1 - 2011/2/4

N2 - Despite radically different environmental conditions, terrestrial and martian dunes bear a strong resemblance, indicating that the basic processes of saltation and grainfall (sand avalanching down the dune slipface) operate on both worlds. Here, we show that martian dunes are subject to an additional modification process not found on Earth: springtime sublimation of Mars' CO 2 seasonal polar caps. Numerous dunes in Mars' north polar region have experienced morphological changes within a Mars year, detected in images acquired by the High-Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter. Dunes show new alcoves, gullies, and dune apron extension. This is followed by remobilization of the fresh deposits by the wind, forming ripples and erasing gullies. The widespread nature of these rapid changes, and the pristine appearance of most dunes in the area, implicates active sand transport in the vast polar erg in Mars' current climate.

AB - Despite radically different environmental conditions, terrestrial and martian dunes bear a strong resemblance, indicating that the basic processes of saltation and grainfall (sand avalanching down the dune slipface) operate on both worlds. Here, we show that martian dunes are subject to an additional modification process not found on Earth: springtime sublimation of Mars' CO 2 seasonal polar caps. Numerous dunes in Mars' north polar region have experienced morphological changes within a Mars year, detected in images acquired by the High-Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter. Dunes show new alcoves, gullies, and dune apron extension. This is followed by remobilization of the fresh deposits by the wind, forming ripples and erasing gullies. The widespread nature of these rapid changes, and the pristine appearance of most dunes in the area, implicates active sand transport in the vast polar erg in Mars' current climate.

UR - http://www.scopus.com/inward/record.url?scp=79551637255&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79551637255&partnerID=8YFLogxK

U2 - 10.1126/science.1197636

DO - 10.1126/science.1197636

M3 - Article

C2 - 21292976

AN - SCOPUS:79551637255

VL - 331

SP - 575

EP - 578

JO - Science

JF - Science

SN - 0036-8075

IS - 6017

ER -