Bizarre  Icy Landforms
NASA/JPL-Caltech/UArizona
Bizarre Icy Landforms
ESP_076511_2205  Science Theme: Other
The Martian middle latitudes (about 30-50 degrees North and South) reveal many strange landforms.

This latitude is where significant ground ice has formed and may still be present, and where the temperatures were sometimes high enough in the recent past for ice to flow. This image shows roundish landforms covered by polygons and surrounded by trenches. Some combination of ice expansion and contraction, sublimation, and flow may have created this landscape.

Written by: Alfred McEwen  (19 January 2023)

 
Acquisition date
22 November 2022

Local Mars time
14:13

Latitude (centered)
39.988°

Longitude (East)
39.290°

Spacecraft altitude
297.0 km (184.6 miles)

Original image scale range
59.4 cm/pixel (with 2 x 2 binning) so objects ~178 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.0°

Phase angle
56.8°

Solar incidence angle
57°, with the Sun about 33° above the horizon

Solar longitude
342.4°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  317.0°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (469MB)

IRB color
map-projected   (270MB)

JP2 EXTRAS
Black and white
map-projected  (263MB)
non-map           (282MB)

IRB color
map projected  (123MB)
non-map           (230MB)

Merged IRB
map projected  (501MB)

Merged RGB
map-projected  (462MB)

RGB color
non map           (218MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

USAGE POLICY
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL-Caltech/UArizona

POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.