This false-color subframe shows the north polar layered deposits at top and darker materials at bottom exposed in a scarp at the head of Chasma Boreale, a large canyon eroded into the layered deposits. The pol More
The North Polar layered deposits are a 3-kilometer thick stack of dusty water ice layers that are about 1000 kilometers across. The layers record information about climate stretching back a few million years i More
Rupes_Tenuis
(ESP_062245_2620) Abalos Scopuli Basal Layers and Dunes - Mariagat 1959 modified image: NASA/JPL/University of Arizona - We ♥ Mars
Northern Plains Terrain Image: NASA/JPL/University of Arizona (5 km across. www.uahirise.org/ESP_028231_2595)
Persianesque NASA/JPL/University of Arizona (5 km across; www.uahirise.org/ESP_027315_2575)
An impact crater on Planum Boreum, or North Polar deposits of Mars, observed by HiRISE on Mars Reconnaissance Orbiter. The crater is approximately 130 meters (425 feet) across and has been filled with dust and More
Photo of dunes near Mars's north pole, taken by the HiRISE camera on June 11, 2012
An image taken by the HiRISE camera of layered ice at Mars's north pole
Korolev Crater, as seen by hirise. Location is 72.8 degrees north latitude and 164.5 degrees east longitude. Image was taken by the Mars Reconnaissance Orbiter's HiRISE. The HiRISE camera was built by Ball A More
Linear Dunes in the North Polar Region of Mars (Planum Boreum), observed by HiRISE on Mars Reconnaissance Orbiter. Ελληνικά: Γραμμικές αμμοθίνες στη Βόρεια Πολική περιοχή του Άρη. Εικόνα από το τηλεσκόπιο HiR More
North Pole Layers of Mars, as seen by hirise. Location is 85.1 N and 236.7 E.
This image shows apparent mounds on residual ice observed in association with dune migration. How does seasonal defrosting impact sand mobility? This cutout is less than 5 km (3 mi) across and the spacecraft a More
The north polar layered deposits are layers of dusty ice up to 3 kilometres thick and approximately 1000 kilometres in diameter. We can see the layers exposed on the walls of troughs and scarps cut into the de More
PIA23527: A Martian Game Board https://photojournal.jpl.nasa.gov/catalog/PIA23527 This image, acquired on July 16, 2019 by NASA's Mars Reconnaissance Orbiter, shows the polar region, in the Northern Hemisphere More
HiRISE image of a crater in Planum Boreum. Source: [1] (complete picture available). The original caption was:
Defrosting dune with frost in polygon troughs, as seen by hirise under HiWish program
PIA24035: HiRISE Catches an Avalanche on Mars https://photojournal.jpl.nasa.gov/catalog/PIA24035 The High-Resolution Imaging Science Experiment (Hi-RISE) camera aboard NASA's Mars Reconnaissance Orbiter capture More
Close view of dunes showing boulders, as seen by hirise under HiWish program
A bright ice cap of frozen water covers the North Pole of Mars. In the winter, thin coverings of carbon dioxide and water frost covers this area (86.810° N, 135.772° W) and these frosts finally disappear at th More
Close view of layers in north ice cap, as seen by hirise under HiWish program
Layers in ice cap in Mare Boreum quadrangle, as seen by HiRISE under HiWish program This image shows an angular unconformity.
Close view of dunes showing boulders with arrows, as seen by hirise under HiWish program
The avalanche on Mars, February 19th 2008日本語: 火星で観測された雪崩。2008年2月19日撮影。한국어: 화성에서 발생한 눈사태를 찍은 사진이다. 2008년 2월 19일.
They might look like trees on Mars, but they're not. Groups of dark brown streaks have been photographed by the Mars Reconnaissance Orbiter on melting pinkish sand dunes covered with light frost. The above ima More
Dark Dunes and Light Interface, observed by HiRISE on Mars Reconnaissance Orbiter. Ελληνικά: Σκοτεινόχρωμες αμμοθίνες σε ανοιχτόρωμο φόντο στον Άρη. Εικόνα από το τηλεσκόπιο HiRISE της διαστημοσυσκευής Mars R More
This striking image of a mound within the area of a trough cutting into Mars' north polar layered deposits was taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissa More
This is the first of a new monitoring series to track seasonal processes. It is also a striking image with late winter angled illumination over dunes covered by carbon dioxide frost mixed with dust. Dark spots More
Barchan dunes on Mars as seen by HiRISE on the Mars Reconnaissance Orbiter. Part of an experiment to track changes of martian dunes, in combination with MOC, whereas it was found that two dunes had dissappeare More
Defrosted Margin of the North Polar Erg of Planum Boreum, or North Pole of Mars, observed by HiRISE on Mars Reconnaissance Orbiter. The erg is a "sea of sand" that surrounds the north polar car. Polygonal dune More
Polygons on Defrosting Dunes
Mars - ESP 016171 2620 Northwestern Abalos Scopuli in springtime - Mariagata1959 modified image NASA/JPL/University of Arizona/
Mars - ESP_016171_2620_COLOR - Northwestern Abalos Scopuli in springtime
Mars - ESP_016450_2605 - North Polar Gypsum Dunes - Mariagata1959 modified image NASA/JPL/University of Arizona/
Mars - (ESP 016447 2540) Springtime defrosting north polar dunes - Mariagata1959 modified image NASA/JPL/University of Arizona/
Mars - ESP 017793 2625- Interaction between Abalos Mensa and Rupes Tenuis dunes - Mariagata1959 modified image NASA/JPL/University of Arizona/
The Simplicity of Linear Dunes NASA/JPL/University of Arizona (322 km above the surface, less than 1 km top to bottom and north is approximately to the left) Source: www.uahirise.org/ESP_017963_2640
La Roue du Temps – Seemingly etched into the surface. This terrain might be rich in hydrates. NASA/JPL/University of Arizona (317 km above the surface, less than 5 km across) Source: www.uahirise.org/ESP_017444_2860
Mars - ESP 026576 2600 RED /Abalos Mensa/
Northern spring in far north showing showing frost along the edges of polygons and a spider, as seen by HiRISE under HIWish program
Dunes in far north, as seen by hirise under HiWish program
Close-up of dunes in far north in crater, as seen by hirise under HiWish program
Close-up of spiders in northern spring in far north showing showing frost along the edges of polygons, as seen by HiRISE under HIWish program
Close-up of dark streaks in northern spring in far north showing showing frost along the edges of polygons and dark streaks from a wind blowing as spiders blow out dark dust, as seen by HiRISE under HIWish program
Defrosting dunes and ice in troughs of polygons, as seen by hirise under HiWish program
Defrosting dunes and ice in troughs of polygons, as seen by hirise under HiWish program, in color
Polygons in Impact Craters: Polygons usually form from the expansion and contraction of subsurface ice. NASA/JPL/University of Arizona (5 km across, www.uahirise.org/ESP_044251_2470)
Wide view of layers in north ice cap, as seen by hirise under HiWish program
Mars - ESP 044704 2660 North Polar Layers
When You Wish Upon a Polar Dune NASA/JPL/University of Arizona (5 km across, www.uahirise.org/ESP_044400_2650)
Olympia Undae Dunes – These are in the North Polar region. NASA/JPL/University of Arizona (5 km across; www.uahirise.org/ESP_044990_2610)
North Polar Gypsum Dunes in Olympia Undae (NASA/JPL/University of Arizona) www.uahirise.org/ESP_045501_2605
Dunes with scale, as seen with hirise under HiWish program
Dunes with scale, as seen by hirise under HiWish program
North Polar Gypsum Dunes in Olympia Undae – Unlike most of the sand dunes on Mars that are made of the volcanic rock basalt, these are made of a type of sulfate mineral called gypsum. (www.uahirise.org/ESP_045501_2605)
Close, color view of layers in ice cap in Mare Boreum quadrangle, as seen by HiRISE under HiWish program
Layers in ice cap in Mare Boreum quadrangle, as seen by HiRISE under HiWish program
Ridges in Mare Boreum quadrangle, as seen by HiRISE under HiWish program
A Steep Scarp in Chasma Boreale on the Opposite Side of an Original Avalanche Site NASA/JPL/University of Arizona (320 km above the surface, less than 5 km across). www.uahirise.org/ESP_051362_2650
Delicious Dunes with a Sprinkling of Frost — Many of these cresent-shaped polar dunes are ringed with visible carbon-dioxide frost. Yum! NASA/JPL/University of Arizona (317 km above the surface, less than 1 km More
Still Life with Polar Dunes NASA/JPL/University of Arizona (334 km above the surface, less than 1 km top to bottom and north is to the right) Source: www.uahirise.org/ESP_053105_2550
Sand dunes in the north polar regions of Mars show light coatings of pale orange dust blown partially across the dark basaltic sand. Around the edges of the dunes, patches of seasonal dry ice remain. These patc More
Wide view of layers in Mare Boreum quadrangle, as seen by HiRISE under HiWish program
Mars - ESP 059711 2535 Dunes Dubbed Bolsa Chica
HiRISE has been re-imaging regions first photographed in 2006 through 2007, six Mars years ago. This long baseline allows us to see large, rare changes as well as many smaller changes. One of the most actively More
Spring Frost on a Cold World Winter on Mars comes with a blanket of carbon dioxide snow. During the spring “thaw,” this snow evaporates into the atmosphere, lingering longest in the shallow depressions such as More
Mars - PSP 009114 2645 Eroding Dunes in Chasma Boreale
Mars - PSP 007338 2640 North polar site to monitor defrosting on dunes
Mars - (PSP 007338 2640) North polar site to monitor defrosting on dunes
Polar Pits: Are They Active? Such small pits should be quickly filled in by seasonal ice and dust, so their existence suggests active processes such as faults pulling apart the icy layers. NASA/JPL/University More
The Mask of Mars — Polar dunes on the right bracket this contrast of light and dark terrain that resembles an evil mask. NASA/JPL/University of Arizona (318 km above the surface, 5 km across) www.uahirise.org/ More
Mars - Dunes in Abalos Undae
Mars - PSP_010219_2785 Dunes in Abalos Undae - Mariagata1959 modified image NASA/JPL/University of Arizona/
Mars - Lonar Crater Ejecta (PSP_010800_2535)
Mars - Unconformity in Gemina Lingula Layered Deposits (PSP_010827_2610) Lat: 80.7° Long: 32.6°
Mars - Eastern Rim of Heimdal Crater (PSP_010846_2485) Lat: 68.3° Long: 235.7°
Mars - High-Latitude Exposure of North Polar Layered Deposits (PSP_010808_2720)
Mars - High-Latitude Exposure of North Polar Layered Deposits (PSP_010856_2720) Lat: 87.8° Long: 209.6°
Mars - North Polar Impact Crater with Possible Summer Ice (PSP_010868_2505) Lat: 70° Long: 352.1°
An impact crater on Planum Boreum, or Nort Polar Cap, of Mars, observed by HiRISE on Mars Reconnaissance Orbiter. The crater is approximately 115 meters (380 feet) across. Craters on the polar cap are rare and More
Stratigraphy of the North Polar Deposits of Planum Boreum, or North Polar deposits of Mars, observed by HiRISE on Mars Reconnaissance Orbiter. Deposits consist mainly of water ice and small amounts of dust. Im More
In spring, the sublimation of the ice (going directly from ice to gas) causes a host of uniquely Martian phenomena. In this image streaks of dark basaltic sand have been carried from below the ice layer to for More
Descriptions courtesy of NASA: The image shows a Martian avalanche, or debris fall, in action. Cameras orbiting Mars have taken thousands of images that have enabled scientists to put together pieces of Mars More
The Abalos Undae dune field stretches westward, away from a portion (Abalos Colles) of the ice-rich north polar layered deposits that is separated from the main Planum Boreum dome by two large chasms. These du More
How did these layers of red cliffs form on Mars? No one is sure. The northern ice cap on Mars is nearly divided into two by a huge division named Chasma Boreale. No similar formation occurs on Earth. Pictured More
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. The deep More
Mars - North Polar Layered Deposits Avalanche Monitoring
Dunes in Abalos Undae
North Polar Gypsum Dunes in Olympia Undae
Exposed Rupes Tenuis of the Southern Margin of Hyperborea Lingula