PIA00083: Venus - Adivar Crater
Target Name: Venus
Is a satellite of: Sol (our sun)
Mission: Magellan
Spacecraft: Magellan
Instrument: Imaging Radar
Product Size: 2857 x 5000 pixels (width x height)
Produced By: JPL
Producer ID: P38387
Addition Date: 1996-02-07
Primary Data Set: Magellan MIDRs
Full-Res TIFF: PIA00083.tif (10.02 MB)
Full-Res JPEG: PIA00083.jpg (3.101 MB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Many of the impact craters of Venus revealed by Magellan have characteristics unlike craters on any other planetary body. This 30-kilometer (18.6-mile) diameter crater, named Adivar crater for the Turkish educator and author Halide Adivar (1883-1964), is located just north of the western Aphrodite highland (9 degrees north latitude, 76 degrees east longitude). Surrounding the crater rim is ejected material which appears bright in the radar image due to the presence of rough fractured rock. A much broader area has also been affected by the impact, particularly to the west of the crater. Radar-bright materials, including a jet-like streak just west of the crater, extend for over 500 kilometers (310 miles) across the surrounding plains. A darker streak, in a horseshoe or paraboloidal shape, surrounds the bright area. Radar-dark (i.e., smooth) paraboloidal streaks were observed around craters in earlier Magellan images, but this is a rare bright crater streak. These unusual streaks, seen only on Venus, are believed to result from the interaction of crater materials (the meteoroid, ejecta, or both) and high-speed winds in the upper atmosphere. The precise mechanism that produces the streaks is poorly understood, but it is clear that the dense atmosphere of Venus plays an important role in the cratering process.

Image Credit:
NASA/JPL

Image Addition Date:
1996-02-07