Tag Archives: Abolos Undae

THEMIS: Frost-free dunes in north polar sand sea

Posted on March 16, 2018 by rburnham

THEMIS Image of the Day, March 16, 2018. This VIS image was collected at the height of summer. It is during this season that winds are able to move sand sized particles, slowly modifying the dunes. Olympia Undae is a … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

THEMIS: Dunes in transition

Posted on March 15, 2018 by rburnham

THEMIS Image of the Day, March 15, 2018. This VIS image highlights the dune form/dune density aspects of Olypmia Undae. In the center there is a brighter, diagonal region of few dunes. These dunes are the arc or crescent shape … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

THEMIS: Dunes, lacy and regular

Posted on March 14, 2018 by rburnham

THEMIS Image of the Day, March 14, 2018. This VIS image hightlights the density of dunes, the bottom third of the image has fewer dunes, spaced farther apart than the top two thirds of the image. The bottom of the … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

THEMIS: Is that gypsum under the dunes?

Posted on March 13, 2018 by rburnham

THEMIS Image of the Day, March 13, 2018. This VIS image of Olympia Undae was collected during north polar summer. The dunes are now completely frost free and are dark in color due to being made of basaltic sand. The … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

THEMIS: Edge of the great northern sand sea

Posted on March 12, 2018 by rburnham

THEMIS Image of the Day, March 12, 2018. This VIS image of Olympia Undae was collected during north polar summer. The dunes are now completely frost free and are dark in color due to being made of basaltic sand. The … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

THEMIS: Amidst the sea of sand

Posted on March 9, 2018 by rburnham

THEMIS Image of the Day, March 9, 2018. This VIS image of Olympia Undae was collected during north polar spring. The crests of the dunes and other surfaces are light colored, indicative of a frost covering. The density of dunes … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , | Comments Off

THEMIS: Dunes don’t climb hills (very far)

Posted on March 8, 2018 by rburnham

THEMIS Image of the Day, March 8, 2018. This VIS image of Olympia Undae was collected during north polar spring. The crests of the dunes and other surfaces are light colored, indicative of a frost covering. At the top right … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , , , , | Comments Off

THEMIS: Defrosting dunes in Olympia Undae

Posted on March 7, 2018 by rburnham

THEMIS Image of the Day, March 7, 2018. This VIS image of Olympia Undae was collected early in north polar spring. The crests of the dunes are light colored, indicative of a frost covering. As the season changes into summertime, … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , , , , | Comments Off

THEMIS: Patterns in the sands of Olympia Undae

Posted on March 6, 2018 by rburnham

THEMIS Image of the Day, March 6, 2018. This VIS image of Olympia Undae was collected early in north polar spring. The crests of the dunes are light colored, indicative of a frost covering. As the season changes into summertime, … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , | Comments Off

THEMIS: Waves in the north polar sand sea

Posted on March 5, 2018 by rburnham

THEMIS Image of the Day, March 5, 2018. Olympia Undae is a vast dune field in the north polar region of Mars. It consists of a broad sand sea or erg that partly rings the north polar cap from about … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , , , , , | Comments Off