Lista över kratrar på Venus

Alcott crater on Venus.jpg
Radar image of Alcott crater on Venus

PIA00083-cropped.jpg
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.

Aurelia crater PIA00239.jpg
This Magellan image shows a complex crater, 31.9 kilometers (20 miles) in diameter with a circular rim, terraced walls, and central peaks, located at 20.3 degrees north latitude and 331.8 degrees east longitude. Several unusual features are evidenced in this image: large dark surface up range from the crater; lobate flows emanating from crater ejecta, and very radar-bright ejecta and floor. Aurelia has been proposed to the International Astronomical Union, Subcommittee of Planetary Nomenclature as a candidate name. Aurelia is the mother of Julius Caesar.

Venus-real color.jpg
Venus in real colors, processed from clear and blue filtered Mariner 10 images.

Source images are in the public domain (NASA)

Images processed by Ricardo Nunes, downloaded from http://www.astrosurf.com/nunes/explor/explor_m10.htm

Barton crater.jpg
This 54-km (32-mi) diameter crater is the size at which craters on Venus begin to possess peak-rings instead of a single central peak. The floor of Barton crater is flat and radar-dark, indicating possible infilling by lava flows sometime following the impact. Barton's central peak-ring is discontinuous and appears to have been disrupted or separated during or following the cratering process. The name Barton has been proposed by the Magellan Science Team, after Clara Barton, founder of the U. S. Red Cross; the name is tentative pending approval by the IAU.

Addams crater on Venus.jpg
Addams crater on Venus by Magellan

Magellan - Balch crater mgn c130n279 1.gif
Magellan radar image of Balch Crater, Venus, originally designated Somerville Crater. This crater is one of the few examples of tectonically modified craters seen on Venus. The absence of such craters indicates a possible cessation of tectonic deformation on Venus at some point in history. Balch is located at 30° N, 283° W in Devana Chasma, Central Beta Regio. The crater was originally 37 kilometres in diameter. North is up. (Magellan C1-MIDR 30N279;1,framelet 30)

Location & Time Information
Date/Time (UT): N/A
Distance/Range (km): 479.4
Central Latitude/Longitude (deg): +29.95/279.43
Orbit(s): 1859-1969

Imaging Information
Area or Feature Type: Crater, Rift
Instrument: Synthetic Aperture Radar
Instrument Resolution (pixels): 240 x 240, 8 bit
Instrument Field of View (deg): 2.1 x 2.5
Filter: N/A
Illumination Incidence Angle (deg): 39.1-44.4
Phase Angle (deg): 0
Instrument Look Direction: Left
Surface Emission Angle (deg): 39.1-44.4

Ordering Information
CD-ROM Volume: MG_0043
NASA Image ID number: C1-30N279;1
Other Image ID number: P-38741
NSSDC Data Set ID (Photo): 89-033B-01O
NSSDC Data Set ID (CD): 89-033B-01C
Other ID: N/A

Buck crater PIA00470.jpg
This complex crater in the Navka region of Venus was mapped by Magellan on September 26-27, 1990 during orbits 459 and 460. The crater has a diameter of 22 kilometers (13.6 miles) and is located at latitude 5.75 degrees south, longitude 349.6 degrees east. It has the terraced walls, flat radar-dark floor, and central peak that are characteristic of craters classified as 'complex'. The central peak on its floor is unusually large. Flow-like deposits extend beyond the limits of the coarser rim deposits on its west and southwest. Like about half of the craters mapped by Magellan to date, it is surrounded by a local, radar-dark halo. Buck, the proposed name for this crater honors Pearl S. Buck, American author (1892-1973). Proposed names for all features on planetary bodies are provisional until formally adopted by the International Astronomical Union.