## Breadcrumb

-  Astrogeology Science Center 
-  Science 

#           Mars Dunes      

  Completed

      By Astrogeology Science Center      November 9, 2018    

## Mars Dunes

            -              Overview           
            -              Science           

**Sand dunes are among the most widespread aeolian features** present on Mars, serving as unique indicators of the interaction between the atmosphere and surface. On a planetary body, dunes accumulate where a supply of sand-sized grains exists or may be abraded, is carried downwind by winds of saltation strength, and is subsequently deposited where these winds weaken below the threshold for sand transport. As a result, the study of dune processes contributes to both atmospheric and sedimentary science. Both the presence and morphology of sand dunes are sensitive to subtle shifts in wind circulation patterns and wind strengths, which are thought to be influenced by changes in Martian orbital parameters. 

The spatial distribution of aeolian sand relates to patterns of sedimentary deposition and erosion of source materials, giving clues to the sedimentary history of the surrounding terrain. Dunes are particularly suited to comprehensive planetary studies in part because they are abundant on the Martian surface over a wide range of elevations and terrain types, and in part because they are large enough to be studied using the wide suite of spacecraft data now available. Thus a global scale study of Martian dunes serves a dual purpose in furthering understanding of both climatic and sedimentary processes, two fundamental topics currently driving Martian science.

Previous aeolian studies of the Martian surface relied on Mariner 9 and Viking Orbiter images to examine and map aeolian morphologies. More recent studies, using high-resolution images like Mars Global Surveyor (MGS) Mars Orbiter Camera narrow angle (MOC NA) and Mars 2001 Odyssey Orbiter Thermal Emission Imaging System (THEMIS) visible range images (VIS), have enabled scientists to re-examine surficial areas from earlier investigations and see new aeolian deposits unresolved by previous instruments. As a result of the influx of high resolution data, the Martian stratigraphic column is undergoing rapid evolution as are the interpretations of much of Mars' geologic history, contributing to new insights about Martian aeolian processes and relationships. Surface images from both orbiting spacecraft (e.g., from MGS MOC NA) and Mars Exploration Rovers (MER) demonstrate how ubiquitous erosional and depositional features of aeolian origin are on the Martian surface.

 

### MGD 3 : Supporting Information, Maps and Links

 

### Mars Dune Image Galleries

CRISM
                                - Dune images  are available from the  CRISM Image Gallery .

THEMIS
                                - The Mars Odyssey Mission THEMIS website has several image galleries. You can find an updated dune image in the " Image of the Day ", and the full listing in the " Map of All Images ". You can also read THEMIS feature articles and research based on the images in " THEMIS Features ".

MOC
                                - Though not necessarily as current as the other image galleries, images of dunes are available from the  MGS MOC Captioned Image Releases  webpage.

HiRISE
                                - Because HiRISE is still in its infancy, the image gallery isn't divided into as many topics as it certainly will be in the future. However you can view all image topics at the  MRO gallery .

 

Below are other science projects associated with this project.

link

November 14, 2018

####                 Data And Instruments              

Astrogeology Science Center

link

November 14, 2018

####   Data And Instruments

Learn More

link

November 14, 2018

####                 Mars Dune Image Galleries              

Astrogeology Science Center

link

November 14, 2018

####   Mars Dune Image Galleries

Learn More

link

November 14, 2018

####                 The Mars Global Digital Dune Database              

Astrogeology Science Center

link

November 14, 2018

####   The Mars Global Digital Dune Database

Learn More

link

November 14, 2018

####                 Dune Classification              

Astrogeology Science Center

link

November 14, 2018

####   Dune Classification

Learn More

link

November 9, 2018

####                 Consortium Announcements and Meetings              

Astrogeology Science Center

link

November 9, 2018

####   Consortium Announcements and Meetings

Learn More

link

November 9, 2018

####                 Workshops              

Astrogeology Science Center

link

November 9, 2018

####   Workshops

Learn More

link

November 9, 2018

####                 Announcements              

Astrogeology Science Center

link

November 9, 2018

####   Announcements

Learn More

**Sand dunes are among the most widespread aeolian features** present on Mars, serving as unique indicators of the interaction between the atmosphere and surface. On a planetary body, dunes accumulate where a supply of sand-sized grains exists or may be abraded, is carried downwind by winds of saltation strength, and is subsequently deposited where these winds weaken below the threshold for sand transport. As a result, the study of dune processes contributes to both atmospheric and sedimentary science. Both the presence and morphology of sand dunes are sensitive to subtle shifts in wind circulation patterns and wind strengths, which are thought to be influenced by changes in Martian orbital parameters. 

The spatial distribution of aeolian sand relates to patterns of sedimentary deposition and erosion of source materials, giving clues to the sedimentary history of the surrounding terrain. Dunes are particularly suited to comprehensive planetary studies in part because they are abundant on the Martian surface over a wide range of elevations and terrain types, and in part because they are large enough to be studied using the wide suite of spacecraft data now available. Thus a global scale study of Martian dunes serves a dual purpose in furthering understanding of both climatic and sedimentary processes, two fundamental topics currently driving Martian science.

Previous aeolian studies of the Martian surface relied on Mariner 9 and Viking Orbiter images to examine and map aeolian morphologies. More recent studies, using high-resolution images like Mars Global Surveyor (MGS) Mars Orbiter Camera narrow angle (MOC NA) and Mars 2001 Odyssey Orbiter Thermal Emission Imaging System (THEMIS) visible range images (VIS), have enabled scientists to re-examine surficial areas from earlier investigations and see new aeolian deposits unresolved by previous instruments. As a result of the influx of high resolution data, the Martian stratigraphic column is undergoing rapid evolution as are the interpretations of much of Mars' geologic history, contributing to new insights about Martian aeolian processes and relationships. Surface images from both orbiting spacecraft (e.g., from MGS MOC NA) and Mars Exploration Rovers (MER) demonstrate how ubiquitous erosional and depositional features of aeolian origin are on the Martian surface.

 

### MGD 3 : Supporting Information, Maps and Links

 

### Mars Dune Image Galleries

CRISM
                                - Dune images  are available from the  CRISM Image Gallery .

THEMIS
                                - The Mars Odyssey Mission THEMIS website has several image galleries. You can find an updated dune image in the " Image of the Day ", and the full listing in the " Map of All Images ". You can also read THEMIS feature articles and research based on the images in " THEMIS Features ".

MOC
                                - Though not necessarily as current as the other image galleries, images of dunes are available from the  MGS MOC Captioned Image Releases  webpage.

HiRISE
                                - Because HiRISE is still in its infancy, the image gallery isn't divided into as many topics as it certainly will be in the future. However you can view all image topics at the  MRO gallery .

 

Below are other science projects associated with this project.

link

November 14, 2018

####                 Data And Instruments              

Astrogeology Science Center

link

November 14, 2018

####   Data And Instruments

Learn More

link

November 14, 2018

####                 Mars Dune Image Galleries              

Astrogeology Science Center

link

November 14, 2018

####   Mars Dune Image Galleries

Learn More

link

November 14, 2018

####                 The Mars Global Digital Dune Database              

Astrogeology Science Center

link

November 14, 2018

####   The Mars Global Digital Dune Database

Learn More

link

November 14, 2018

####                 Dune Classification              

Astrogeology Science Center

link

November 14, 2018

####   Dune Classification

Learn More

link

November 9, 2018

####                 Consortium Announcements and Meetings              

Astrogeology Science Center

link

November 9, 2018

####   Consortium Announcements and Meetings

Learn More

link

November 9, 2018

####                 Workshops              

Astrogeology Science Center

link

November 9, 2018

####   Workshops

Learn More

link

November 9, 2018

####                 Announcements              

Astrogeology Science Center

link

November 9, 2018

####   Announcements

Learn More