{ "title": "HiPOD", "metadata": { "thumbnailURL": "bundle://header.jpg", "excerpt": "This wonderful image shows a group of north polar dunes that almost look like they’re traveling as a convoy." }, "version": "1.5", "identifier": "ESP_062198_2635", "language": "en", "layout": { "columns": 10, "width": 1024, "margin": 85, "gutter": 20 }, "documentStyle": { "backgroundColor": "#faf7f2" }, "components": [ { "role": "heading1", "layout": "heading1Layout", "text": "HiPOD: FRIDAY, 29 NOVEMBER 2019" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#8c2028" } }, { "role": "title", "layout": "halfMarginBelowLayout", "text": "A Polar Dune Convoy" }, { "role": "photo", "layout": "fullBleedLayout", "caption": "Long lines of polar dunes, many of them barchan, or crescent-shaped. Less than 5 km across. (NASA/JPL/University of Arizona)", "URL": "bundle://ESP_062198_2635-main-11-29.jpg" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "
This wonderful image shows a group of north polar dunes that almost look like they’re traveling as a convoy. Many of these are barchan dunes, which are typically known for their crescent shape and are fairly widespread on Mars.
It’s possible that the source material for these dunes might be associated with a layers in the trough of a nearby crater. This image also overlaps with one we acquired in 2006, so we might be able to do a comparison of the layers and that dune source.
ID: ESP_062198_2635
date: 2 November 2019
altitude: 321 km
NASA/JPL/University of Arizona