HiPOD 10 Oct 23: Lava-Crater Interaction in Elysium Planitia

This observation truly shows the ravages of time: we see here an interaction of crater topography with ancient lava, which can be informative for analysis. This footprint is deliberately biased to the west because the lower eastern rim should be more interesting. The InSight mission landed in Elysium Planitia in 2018.

https://uahirise.org/hipod/ESP_074239_1860
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiPOD 9 Oct 23: Unique Terrain near Memnonia Sulci

This observation features a unique, strange wavy terrain, also visible in Context Camera images, could be evidence of a combination of windblow n and fluvial processes. Memnonia Sulci is part of the Medusae Fossae Formation, a region of soft, easily eroded deposits that extends for nearly 5,000km (3,106 mi) along the equator of Mars between Olympus Mons and Apollinaris Mons.

https://uahirise.org/hipod/ESP_074238_1705
NASA/JPL-Caltech/UArizona
#Mars #science

HiRISE 3D: Contact between Light-Toned Deposits and Wallrock

This image is centered on the largest and best exposure of light-toned layered deposits that appear to drape wallrock materials.

https://www.uahirise.org/anaglyph/ESP_041068_1720_ESP_040435_1720_RED
NASA/JPL-Caltech/UArizona

HiPOD 5 Oct 23: Light-Toned Materials in an Impact Crater

The rationale for this observation was to get high resolution images to see more details about the light-toned deposits in an unnamed crater: could they be more sulfates or other hydrated materials? This scene is directly east of the large Aram Chaos impact crater.

https://uahirise.org/hipod/ESP_074232_1830
NASA/JPL-Caltech/UArizona
#Mars #science

HiRISE 3D: A Tyrrhena Terra Crater with Altered Minerals

Tyrrhena Terra is typical of the southern Martian landscape, with heavily cratered highlands and other rugged terrain.

https://www.uahirise.org/anaglyph/ESP_041009_1680_ESP_032477_1680_RED
NASA/JPL-Caltech/UArizona
#Mars

HiPOD: Steep Slopes in West Melas Chasma

Another image on the hunt for recurring slope lineae (RSL): there were excellent RSL candidates in a 2014 observation with much better examples than the RSL site located just to the northwest, so we want to monitor this one instead. We also want to take a closer look at the bedrock. Melas Chasma is the widest segment of the Valles Marineris canyon, and is an area where MRO has detected the presence of sulfates.

https://uahirise.org/hipod/ESP_074221_1680
NASA/UArizona

HiPOD 3 Oct 23: Slope Monitoring

The potential recurring slope lineae (RSL) we have viewed in this area are large and have high contrast. Most importantly we see multiple examples of RSL flowing on bedrock, alternating between bedrock and regolith and bedrock and regolith, and then regolith only. Do these candidate RSL fade? Do only the regolith RSL fade? Do they all lengthen?

https://uahirise.org/hipod/ESP_074089_1670
NASA/JPL-Caltech/UArizona

HiRISE 3D: Possible Ice-Related Features in an Argyre Region Crater

The science rationale was to look at stratigraphic relationships between (1) gullies, (2) latitude-dependent mantling, (3) arcuate ridges, and (4) concentric ridges on the crater floor.

https://www.uahirise.org/anaglyph/ESP_041951_1350_ESP_042241_1350_RED
NASA/JPL-Caltech/UArizona

HiPOD 2 Oct 23: Along Samara Valles

This image was requested to look for the source of late discharge along Samara Valles. It appears to emerge from a tributary to the west or further south in convoluted materials. Samara Valles are an elongated set of channels extending 615 kilometers long and were named after the ancient Roman name for modern Somme River, France, in 1976.

https://uahirise.org/hipod/ESP_074219_1570
NASA/JPL-Caltech/UArizona

HiRISE 10K: Of Dome and Crater

The objective of this observation is to take a look at a dome and adjacent crater also visible in Mars Orbiter Camera images. Did the mound form before the crater, or was it the other way around?

Full cutout on Flickr: https://flic.kr/p/2p5Mv6L

NASA/JPL-Caltech/Arizona
#Mars #science

HiRISE 3D: Daedalia Planum Lava Flows

This anaglyph shows contact between two lava flow types in a Daedalia flow field.

https://www.uahirise.org/anaglyph/ESP_042006_1570_ESP_041940_1570_RED
NASA/JPL-Caltech/UArizona

HiPOD 29 Sept 23: Channels on Edge

Also visible in Context Camera data, the objective of this observation is to examine channels on the outside northern edge of a crater. They may have resulted from the heat of impact. The scene itself is located to the east of Huygens Crater.

https://uahirise.org/hipod/ESP_074216_1655
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiRISE 8K: A Transition Boundary

The rationale for this target was to acquire high-resolution detail of the contacts of the transition boundary between the Libya Montes and Isidis Planitia.

Full cutout on Flickr: https://flic.kr/p/2p5GuSv

NASA/JPL-Caltech/UArizona
#Mars #science

HiRISE 3D: Depressions at the Margin of Gigas Sulci

A sulcus (or sulci, plural) is defined as “subparallel furrows and ridges.” This is a purely descriptive term for landforms that could have a variety of origins.

https://www.uahirise.org/anaglyph/ESP_041149_1890_ESP_040661_1890_RED
NASA/JPL-Caltech/UArizona
#Mars #science

HiPOD 28 Sept 23: Spiders on the One, Polygons on the Other

Not actual spiders, of course, but formations often caused by sublimation of subsurface ice that create spider-like patterns. This image was acquired to study the influence of exposure to the sun’s rays on spider versus polygon development in terrain like this.

https://uahirise.org/hipod/ESP_074203_1015
NASA/JPL-Caltech/UArizona
#Mars #science

HiRISE 4K: Light-Toned in Aram Chaos

This image was requested to fill in HiRISE coverage for locations where there are CRISM images.

Full cutout on Flickr: https://flic.kr/p/2p5shQg
 
NASA/JPL-Caltech/Arizona
#Mars #science

HiRISE 3D: Wonderfully Layered Bedrock

Now *this* is a great image of layered bedrock within an eroded crater in Terra Sirenum.

https://www.uahirise.org/anaglyph/ESP_041348_1520_ESP_041282_1520_RED
NASA/JPL-Caltech/UArizona

HiPOD 27 Sept 23: An Extra-Crater Sinuous Ridge

Identifying these types of fluvial ridges outside of craters is critical for reconstructing ancient sedimentary basins, and channel deposits in basins are one of the key deposits used to constrain ancient climate, water discharge, and base-level changes. This is a previously unidentified sinuous ridge from a recent global survey of such features.

https://uahirise.org/hipod/ESP_074196_1070
NASA/JPL-Caltech/UArizona
#Mars #science #NASA

HiRISE 3D: The Lower Reaches of Shalbatana Vallis

This anaglyph shows fluvial shapes at the terminal zone of an outflow channel. Meter-scale shapes may be indicative of flow.

https://www.uahirise.org/anaglyph/ESP_036952_1895_ESP_042873_1895_RED
NASA/JPL-Caltech/UArizona

HiPOD 26 Sept 23: Radial Ridges on a Crater Floor

The objective of this observation is to determine the nature of a group of short radial ridges on an old crater floor. These may be inverted channels from previous glaciers in the crater. The scene can be found in Context Camera data.

https://uahirise.org/hipod/ESP_074151_1520
NASA/JPL-Caltech/UArizona
#Mars #science #NASA