Terra Sirenum - Revision history

Michel Lamontagne at 00:48, 10 November 2020

2020-11-10T00:48:44Z

Jburk at 19:42, 24 July 2018

2018-07-24T19:42:44Z

Jburk at 19:21, 24 July 2018

2018-07-24T19:21:35Z

Suitupandshowup: /* Gullies */

2018-03-29T13:35:52Z

Gullies

Suitupandshowup: /* Gullies */

2018-03-29T13:35:19Z

Gullies

Suitupandshowup: /* Gullies */

2018-03-29T13:34:38Z

Gullies

Suitupandshowup: /* Glacial Features */

2018-03-29T13:24:29Z

Glacial Features

Suitupandshowup at 13:23, 29 March 2018

2018-03-29T13:23:23Z

Suitupandshowup at 15:25, 28 March 2018

2018-03-28T15:25:53Z

Suitupandshowup at 15:23, 28 March 2018

2018-03-28T15:23:07Z

@@ Line 1: / Line 1: @@
+{{Mars atlas}}
 [[File:Wikimolaargyre.jpg|thumb|300px|right|MOLA map showing boundaries of Terra Sirenum and other regions]]
 [[File:Wikimolasouthpole.jpg|thumb|300px|right|MOLA map showing boundaries of Terra Sirenum near the south  pole and other regions]]

← Older revision		Revision as of 19:42, 24 July 2018
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−	[[Category:~~Aerography~~]]	+	[[Category:Areography]]

← Older revision		Revision as of 19:21, 24 July 2018
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−	[[~~category~~:~~regions]]~~	+	[[Category:Aerography]]
−	~~[[category: geography]]~~
−	~~[[category: geology]]~~
−	~~[[category: Place Names~~]]

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 '''Terra Sirenum''' is the location of many Martian gullies that may be due to recent flowing water. Some are found in the Gorgonum Chaos<ref>http://hirise.lpl.arizona.edu/PSP_004071_1425</ref> <ref>http://hirise.lpl.arizona.edu/PSP_001948_1425</ref> and in many craters near the large craters Copernicus and Newton  Crater.<ref>http://hirise.lpl.arizona.edu/PSP_004163_1375</ref> <ref>U.S. department of the Interior U.S. Geological Survey, Topographic Map of the Eastern Region of Mars M 15M 0/270 2AT, 1991</ref>  Gullies occur on steep slopes, especially on the walls of craters. Gullies are believed to be relatively young because they have few, if any craters.   Usually, each gully has an alcove, channel, and apron.  Many theories have been proposed for the origin of gullies on Mars.  Many involve flowing water.  However, with more repeated observations it was found that gullies could form today when pieces of dry ice go down steep slopes.  Furthermore, experiments on the Earth can duplicate gullies with pieces of dry ice moving down slopes. <ref>Harrington, J.D.; Webster, Guy (July 10, 2014). "RELEASE 14-191 – NASA Spacecraft Observes Further Evidence of Dry Ice Gullies on Mars".</ref>   In the distant past some water may have been involved with some gullies.<ref> Jawin, E, J. Head, D. Marchant.  2018.  Transient post-glacial processes on Mars:  Geomorphologic evidence for a paraglacial period.  Icarus:  309, 187-206</ref>
-[[File:ESP 039753 1385gulliespits.jpg[|thumb|300px|left|Large group of gullies]]
+[[File:ESP 039753 1385gulliespits.jpg|thumb|300px|left|Large group of gullies]]
 ==References==

@@ Line 48: / Line 48: @@
 '''Terra Sirenum''' is the location of many Martian gullies that may be due to recent flowing water. Some are found in the Gorgonum Chaos<ref>http://hirise.lpl.arizona.edu/PSP_004071_1425</ref> <ref>http://hirise.lpl.arizona.edu/PSP_001948_1425</ref> and in many craters near the large craters Copernicus and Newton  Crater.<ref>http://hirise.lpl.arizona.edu/PSP_004163_1375</ref> <ref>U.S. department of the Interior U.S. Geological Survey, Topographic Map of the Eastern Region of Mars M 15M 0/270 2AT, 1991</ref>  Gullies occur on steep slopes, especially on the walls of craters. Gullies are believed to be relatively young because they have few, if any craters.   Usually, each gully has an alcove, channel, and apron.  Many theories have been proposed for the origin of gullies on Mars.  Many involve flowing water.  However, with more repeated observations it was found that gullies could form today when pieces of dry ice go down steep slopes.  Furthermore, experiments on the Earth can duplicate gullies with pieces of dry ice moving down slopes. <ref>Harrington, J.D.; Webster, Guy (July 10, 2014). "RELEASE 14-191 – NASA Spacecraft Observes Further Evidence of Dry Ice Gullies on Mars".</ref>   In the distant past some water may have been involved with some gullies.<ref> Jawin, E, J. Head, D. Marchant.  2018.  Transient post-glacial processes on Mars:  Geomorphologic evidence for a paraglacial period.  Icarus:  309, 187-206</ref>
-[File:ESP 039753 1385gulliespits.jpg[|thumb|300px|left|Large group of gullies]]
+[[File:ESP 039753 1385gulliespits.jpg[|thumb|300px|left|Large group of gullies]]
 ==References==

@@ Line 29: / Line 29: @@
 <gallery class="center"  widths="190px" heights="180px" >
-File:ESP 036995 1410tonguewide.jpg|Oxbow lake, as seen by HiRISE under HiWish program
+File:ESP 036995 1410tonguewide.jpg|Tongue-shaped glacier, as seen by HiRISE under HiWish program
 </gallery>

@@ Line 28: / Line 28: @@
 Some look like alpine or mountain glaciers of the Earth. <ref> Arfstrom, J and W. Hartmann.  2005.  Martian flow features, moraine-like ridges, and gullies:  Terrestrial analogs and interrelationships.  Icarus 174, 321-335.</ref>   <ref> Hubbard B., R. Milliken, J. Kargel , A. Limaye, C. Souness .  2011.  Geomorphological characterization and interpretation of a mid-latitude glacier-like form: Hellas Planitia, Mars Icarus 211, 330–346 </ref>   <ref> Hubbard B., R. Milliken, J. Kargel , A. Limaye, C. Souness .  2011.  Geomorphological characterization and interpretation of a mid-latitude glacier-like form: Hellas Planitia, Mars Icarus 211, 330–346 </ref>
-[[File:ESP 036995 1410tonguewide.jpg|thumb|300px|right|Oxbow lake, as seen by HiRISE under HiWish program]]
+<gallery class="center"  widths="190px" heights="180px" >
 ==Oxbow lake==

@@ Line 27: / Line 27: @@
 Several features have been observed that have the shape of glaciers.  Even though ice is not stable at many latitudes of Mars, ice could survive for long periods under a few meters of dirt and rock. <ref>   Head, J. W.; et al. (2006). "Extensive valley glacier deposits in the northern mid-latitudes of Mars: Evidence for Late Amazonian obliquity-driven climate change". Earth and Planetary Science Letters. 241 (3): 663–671.</ref>
 Some look like alpine or mountain glaciers of the Earth. <ref> Arfstrom, J and W. Hartmann.  2005.  Martian flow features, moraine-like ridges, and gullies:  Terrestrial analogs and interrelationships.  Icarus 174, 321-335.</ref>   <ref> Hubbard B., R. Milliken, J. Kargel , A. Limaye, C. Souness .  2011.  Geomorphological characterization and interpretation of a mid-latitude glacier-like form: Hellas Planitia, Mars Icarus 211, 330–346 </ref>   <ref> Hubbard B., R. Milliken, J. Kargel , A. Limaye, C. Souness .  2011.  Geomorphological characterization and interpretation of a mid-latitude glacier-like form: Hellas Planitia, Mars Icarus 211, 330–346 </ref>
 ==Oxbow lake==
 An oxblow lake forms when a channel forms a short cut across a meander.  The presence of an oxbow lake means that water flowed long enough to erode a meander before a cutoff was formed.
-[[File:ESP 036995 1410tonguewide.jpg|thumb|300px|right|Oxbow lake, as seen by HiRISE under HiWish program]]
 ==Pingos==