{
  "title": "At the Edge of a Polar Cap",
  "authors": "HiRISE",
  "metadata": {
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    "excerpt": "The deep chasm that formed on the polar cap edge is identified as an area of strong down-slope winds and has a clear connection to Mars’ largest dune field, Olympia Undae."
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        "text": "HiPOD: 12 January 2021"
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        "text": "At the Edge of a Polar Cap"
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        "caption": "An enhanced color cutout. Less than 1 km across. (NASA/JPL/UArizona)",
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        "text": "<p><br />Formative down-slope winds descending on Mars’ North Polar ice cap likely play an important role in transporting sediment from the base of the ice cap into the dune fields that sit beyond the ice cap.<br /><br />The deep chasm that formed on the polar cap edge is identified as an area of strong down-slope winds and has a clear connection to Mars’ largest dune field, Olympia Undae. Repeat HiRISE images from this chasm that specifically targets the dunes, provides the basis to evaluate the sand fluxes, which are associated with the dune and ripple movement in this area.<br /></p>"
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        "caption": "A fuller view of the scene. Less than 5 km across. (NASA/JPL/UArizona)",
        "URL": "https://static.uahirise.org/anews/2021-01-12/ESP_035926_2640-2.jpg"
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        "text": "<p>ID: <a href='https://uahirise.org/ESP_035926_2640'>ESP_035926_2640</a><br />date: 12 June 2014<br />altitude: 263 km (164 mi)<br /><br />NASA/JPL/UArizona</a></p>"
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        "text": "Enhanced color images are less than 1 km across. For full images with scalebars, see the above ID link to our website.<br /><br />"
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