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Collection:
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NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
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Title:
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Interpreting Radar View near Mars' South Pole, Orbit 1360
Title
Interpreting Radar View near Mars' South Pole, Orbit 1360
Title
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Original Caption Released with Image:
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A radargram from the Shallow Subsurface Radar instrument (SHARAD) on NASA's Mars Reconnaissance Orbiter is shown in the upper-right panel and reveals detailed structure in the polar layered deposits of the south pole of Mars.
The sounding radar collected the data presented here during orbit 1360 of the mission, on Nov. 10, 2006.
The horizontal scale in the radargram is distance along the ground track. It can be referenced to the ground track map shown in the lower right. The radar traversed from about 74 degrees to 85 degrees south latitude, or about 650 kilometers (400 miles). The ground track map shows elevation measured by the Mars Orbiter Laser Altimeter on NASA's Mars Global Surveyor orbiter. Green indicates low elevation; reddish-white indicates higher elevation. The traverse proceeds up onto a plateau formed by the layers.
The vertical scale on the radargram is time delay of the radar signals reflected back to Mars Reconnaissance Orbiter from the surface and subsurface. For reference, using an assumed velocity of the radar waves in the subsurface, time is converted to depth below the surface at one place: about 800 meters (2,600 feet) to one of the strongest subsurface reflectors. This reflector marks the base of the polar layered deposits. The color scale varies from black for weak reflections to white for strong reflections.
The middle panel shows mapping of the major subsurface reflectors, some of which can be traced for a distance of 100 kilometers (60 miles) or more. The layering manifests the recent climate history of Mars, recorded by the deposition and removal of ice and dust.
The Shallow Subsurface Radar was provided by the Italian Space Agency (ASI). Its operations are led by the University of Rome and its data are analyzed by a joint U.S.-Italian science team. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Reconnaissance Orbiter for the NASA Science Mission Directorate, Washington.
Original_Caption_Rel eased_with_Image
A radargram from the Shallow Subsurface Radar instrument (SHARAD) on NASA's Mars Reconnaissance Orbiter is shown in the upper-right panel and reveals detailed structure in the polar layered deposits of the south pole of Mars.
The sounding radar collected the data presented here during orbit 1360 of the mission, on Nov. 10, 2006.
The horizontal scale in the radargram is distance along the ground track. It can be referenced to the ground track map shown in the lower right. The radar traversed from about 74 degrees to 85 degrees south latitude, or about 650 kilometers (400 miles). The ground track map shows elevation measured by the Mars Orbiter Laser Altimeter on NASA's Mars Global Surveyor orbiter. Green indicates low elevation; reddish-white indicates higher elevation. The traverse proceeds up onto a plateau formed by the layers.
The vertical scale on the radargram is time delay of the radar signals reflected back to Mars Reconnaissance Orbiter from the surface and subsurface. For reference, using an assumed velocity of the radar waves in the subsurface, time is converted to depth below the surface at one place: about 800 meters (2,600 feet) to one of the strongest subsurface reflectors. This reflector marks the base of the polar layered deposits. The color scale varies from black for weak reflections to white for strong reflections.
The middle panel shows mapping of the major subsurface reflectors, some of which can be traced for a distance of 100 kilometers (60 miles) or more. The layering manifests the recent climate history of Mars, recorded by the deposition and removal of ice and dust.
The Shallow Subsurface Radar was provided by the Italian Space Agency (ASI). Its operations are led by the University of Rome and its data are analyzed by a joint U.S.-Italian science team. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Reconnaissance Orbiter for the NASA Science Mission Directorate, Washington.
Original Caption Released with Image
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Image Credit:
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NASA/JPL-Caltech/ASI /University of Rome/Washington Universtiy in St. Louis
Image_Credit
NASA/JPL-Caltech/ASI /University of Rome/Washington Universtiy in St. Louis
Image Credit
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Produced By:
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JPL
Produced_By
JPL
Produced By
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Mission:
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Mars Reconnaissance Orbiter (MRO)
Mission
Mars Reconnaissance Orbiter (MRO)
Mission
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Spacecraft:
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Mars Reconnaissance Orbiter (MRO)
Spacecraft
Mars Reconnaissance Orbiter (MRO)
Spacecraft
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Target Name:
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Mars
Target_Name
Mars
Target Name
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Is a satellite of:
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Sol (our sun)
Is_a_satellite_of
Sol (our sun)
Is a satellite of
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Instrument:
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Shallow Subsurface Radar (SHARAD)
Instrument
Shallow Subsurface Radar (SHARAD)
Instrument
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Product Size:
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3275 samples x 2065 lines
Product_Size
3275 samples x 2065 lines
Product Size
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facet_what:
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Sun
facet_what
Sun
facet_what
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facet_what:
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Polar
facet_what
Polar
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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Altimeter
facet_what
Altimeter
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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MRO
facet_what
MRO
facet_what
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facet_what:
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Reflector
facet_what
Reflector
facet_what
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facet_what:
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Shallow Subsurface Radar
facet_what
Shallow Subsurface Radar
facet_what
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facet_what:
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SHARAD
facet_what
SHARAD
facet_what
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facet_what:
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Mars Orbiter Laser Altimeter (MOLA)
facet_what
Mars Orbiter Laser Altimeter (MOLA)
facet_what
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facet_what:
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Mars Reconnaissance Orbiter (MRO)
facet_what
Mars Reconnaissance Orbiter (MRO)
facet_what
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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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California
facet_where
California
facet_where
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facet_where:
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Washington
facet_where
Washington
facet_where
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facet_where:
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Rome
facet_where
Rome
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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Image #:
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PIA09075
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UID:
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SPD-PHOTJ-PIA09075
UID
SPD-PHOTJ-PIA09075
UID
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orignial url:
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orignial_url
orignial url
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