HiRISE | Filled Crater and Scallops (ESP_038967

NASA/JPL-Caltech/UArizona

Filled Crater and Scallops
ESP_038967_1230 Science Theme: Glacial/Periglacial Processes

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In this observation made for a study of ancient craters, we see the craters filled with smooth material that has subsequently degraded into scallops. These formations might be possibly due to ground ice sublimation.

High resolution can help to estimate any differences in roughness on the smoother main mantle and in the eroded hollows. With the enhanced color swath, we might be able to view composition variations of the material.

This caption is based on the original science rationale.

Written by: HiRISE Science Team (narration: Tre Gibbs) (28 January 2015)

Acquisition date
18 November 2014

Local Mars time
15:48

Latitude (centered)
-56.659°

Longitude (East)
52.058°

Spacecraft altitude
247.6 km (153.9 miles)

Original image scale range
24.8 cm/pixel (with 1 x 1 binning) so objects ~74 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.0°

Phase angle
52.4°

Solar incidence angle
55°, with the Sun about 35° above the horizon

Solar longitude
236.1°, Northern Autumn

For non-map projected images
North azimuth: 98°
Sub-solar azimuth: 23.1°

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IRB color
map projected  non-map

Merged IRB
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Merged RGB
map projected

RGB color
non-map projected

JP2
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map-projected   (881MB)

IRB color
map-projected   (433MB)

JP2 EXTRAS
Black and white
map-projected (326MB)
non-map           (565MB)

IRB color
map projected (137MB)
non-map           (496MB)

Merged IRB
map projected (245MB)

Merged RGB
map-projected (236MB)

RGB color
non map           (518MB)

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.