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Collection:
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NASA Great Images in Nasa Collection
Collection
NASA Great Images in Nasa Collection
Collection
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Title:
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Evidence for Recent Liquid Water on Mars
Title
Evidence for Recent Liquid Water on Mars
Title
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Full Description:
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Newton Crater is a large basin formed by an asteroid impact that probably occurred more than 3 billion years ago. It is approximately 287 kilometers (178 miles) across. The picture shown here (top) highlights the north wall of a specific, smaller crater located in the southwestern quarter of Newton Crater (above). The crater of interest was also formed by an impact; it is about 7 km (4.4 mi) across, which is about 7 times bigger than the famous Meteor Crater in northern Arizona in North America. The north wall of the small crater has many narrow gullies eroded into it. These are hypothesized to have been formed by flowing water and debris flows. Debris transported with the water created lobed and finger-like deposits at the base of the crater wall where it intersects the floor (bottom center top image). Many of the finger-like deposits have small channels indicating that a liquid, most likely water, flowed in these areas. Hundreds of individual water and debris flow events might have occurred to create the scene shown here. Each outburst of water from higher up on the crater slopes would have constituted a competition between evaporation, freezing, and gravity. The individual deposits at the ends of channels in this MOC image mosaic were used to get a rough estimate of the minimum amount of water that might be involved in each flow event. This is done first by assuming that the deposits are like debris flows on Earth. In a debris flow, no less than about 10% (and no more than 30%) of their volume is water. Second, the volume of an apron deposit is estimated by measuring the area covered in the MOC image and multiplying it by a conservative estimate of thickness, 2 meters (6.5 feet). For a flow containing only 10% water, these estimates conservatively suggest that about 2.5 million liters (660,000 gallons) of water are involved in each event; this is enough to fill about 7 community-sized swimming pools or enough to supply 20 people with their water needs for a year. The Mars Orbiter Camera (MOC) high resolution view is located near 41.1S, 159.8W and is a mosaic of three different pictures acquired between January and May 2000. The MOC scene is illuminated from the left; north is up.
Full_Description
Newton Crater is a large basin formed by an asteroid impact that probably occurred more than 3 billion years ago. It is approximately 287 kilometers (178 miles) across. The picture shown here (top) highlights the north wall of a specific, smaller crater located in the southwestern quarter of Newton Crater (above). The crater of interest was also formed by an impact; it is about 7 km (4.4 mi) across, which is about 7 times bigger than the famous Meteor Crater in northern Arizona in North America. The north wall of the small crater has many narrow gullies eroded into it. These are hypothesized to have been formed by flowing water and debris flows. Debris transported with the water created lobed and finger-like deposits at the base of the crater wall where it intersects the floor (bottom center top image). Many of the finger-like deposits have small channels indicating that a liquid, most likely water, flowed in these areas. Hundreds of individual water and debris flow events might have occurred to create the scene shown here. Each outburst of water from higher up on the crater slopes would have constituted a competition between evaporation, freezing, and gravity. The individual deposits at the ends of channels in this MOC image mosaic were used to get a rough estimate of the minimum amount of water that might be involved in each flow event. This is done first by assuming that the deposits are like debris flows on Earth. In a debris flow, no less than about 10% (and no more than 30%) of their volume is water. Second, the volume of an apron deposit is estimated by measuring the area covered in the MOC image and multiplying it by a conservative estimate of thickness, 2 meters (6.5 feet). For a flow containing only 10% water, these estimates conservatively suggest that about 2.5 million liters (660,000 gallons) of water are involved in each event; this is enough to fill about 7 community-sized swimming pools or enough to supply 20 people with their water needs for a year. The Mars Orbiter Camera (MOC) high resolution view is located near 41.1S, 159.8W and is a mosaic of three different pictures acquired between January and May 2000. The MOC scene is illuminated from the left; north is up.
Full Description
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Date:
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06/22/2000
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NASA Center:
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Jet Propulsion Laboratory
NASA_Center
Jet Propulsion Laboratory
NASA Center
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Subject Category:
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Planet-Mars
Subject_Category
Planet-Mars
Subject Category
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Subject Category:
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Mars Global Surveyor
Subject_Category
Mars Global Surveyor
Subject Category
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Keywords:
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Camera
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Keywords:
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Surveyor
Keywords
Surveyor
Keywords
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Keywords:
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Orbiter
Keywords
Orbiter
Keywords
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Keywords:
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Mars
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Keywords:
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Global
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Keywords:
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Crater
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Keywords:
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Arizona
Keywords
Arizona
Keywords
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Keywords:
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MGS
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Keywords:
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MOC
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Keywords:
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Newton
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Keywords:
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Meteor
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Keywords:
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Channels
Keywords
Channels
Keywords
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Keywords:
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Gullies
Keywords
Gullies
Keywords
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Keywords:
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Asteroid
Keywords
Asteroid
Keywords
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Audience:
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General Public
Audience
General Public
Audience
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Crater
facet_what
Crater
facet_what
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facet_what:
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Surveyor
facet_what
Surveyor
facet_what
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facet_what:
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Mars
facet_what
Mars
facet_what
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facet_what:
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Mars Global Surveyor Orbiter (MGS)
facet_what
Mars Global Surveyor Orbiter (MGS)
facet_what
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facet_what:
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Mars Orbiter Camera (MOC)
facet_what
Mars Orbiter Camera (MOC)
facet_what
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facet_where:
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Jet Propulsion Laboratory
facet_where
Jet Propulsion Laboratory
facet_where
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facet_where:
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Mars
facet_where
Mars
facet_where
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facet_where:
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Arizona
facet_where
Arizona
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_when:
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May 2000
facet_when
May 2000
facet_when
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facet_when:
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06-22-2000
facet_when
06-22-2000
facet_when
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facet_when_year:
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2000
facet_when_year
2000
facet_when_year
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Image #:
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PIA01039
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original_url:
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original_url
original_url
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UID:
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SPD-GRIN-GPN-2000-00 1430
UID
SPD-GRIN-GPN-2000-00 1430
UID
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Center:
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JPL
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Center Number:
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PIA01039
Center_Number
PIA01039
Center Number
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GRIN DataBase Number:
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GPN-2000-001430
GRIN_DataBase_Number
GPN-2000-001430
GRIN DataBase Number
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Creator-Photographer:
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NASA, JPL, Malin Space Science Systems ODEvidence for Recent Liquid
Creator-Photographer
NASA, JPL, Malin Space Science Systems ODEvidence for Recent Liquid
Creator-Photographer
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Original Source:
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DIGITAL
Original_Source
DIGITAL
Original Source
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