HiRISE | Fluvial Landforms in Granicus Valles (ESP_080319

NASA/JPL-Caltech/UArizona

Fluvial Landforms in Granicus Valles
ESP_080319_2105 Science Theme:

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Granicus Valles form a low-lying complex of channel systems located west of the volcano Elysium Mons. They are one of several larger systems known as outflow channels because the water source is from the subsurface. In this case, Granicus Valles emanate from a series of fractures on the western flank of Elysium Mons.

In this image, large, streamlined features and grooves have been carved by enormous water volumes into the floor of Granicus and point to the direction of flow towards the northwest. The floods of Granicus Valles are thought to have formed later in Mars history during the Amazonian epoch, several billion years ago.

Written by: Ginny Gulick (14 December 2023)

Acquisition date
14 September 2023

Local Mars time
15:31

Latitude (centered)
29.994°

Longitude (East)
128.143°

Spacecraft altitude
291.1 km (180.9 miles)

Original image scale range
58.3 cm/pixel (with 2 x 2 binning) so objects ~175 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
2.0°

Phase angle
49.7°

Solar incidence angle
48°, with the Sun about 42° above the horizon

Solar longitude
118.8°, Northern Summer

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 9.4°

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Merged RGB
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map-projected   (163MB)

IRB color
map-projected   (52MB)

JP2 EXTRAS
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non-map           (113MB)

IRB color
map projected (23MB)
non-map           (46MB)

Merged IRB
map projected (167MB)

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non map           (44MB)

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ADDITIONAL INFORMATION
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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.