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Alpha Regio
Alpha Regio 3D.jpg
A portion of Alpha Regio is displayed in this three-dimensional perspective view of the surface of Venus.
Feature type Regio
Coordinates 22°S 5°E / 22°S 5°E / -22; 5Coordinates: 22°S 5°E / 22°S 5°E / -22; 5
Diameter 1500 km

Alpha Regio is a region of the planet Venus extending for about 1500 kilometers centered at 22°S, 5°E.

It was discovered and named by Dick Goldstein in 1964.[1] The name was approved by the International Astronomical Union's Working Group for Planetary System Nomenclature (IAU/WGPSN) between 1976 and 1979.[2] Maxwell Montes, Alpha Regio, and Beta Regio are the three exceptions to the rule that the surface features of Venus are to be named for females: women or goddesses.

The surface of the region is what is known as Tessera, meaning a terrain that has been highly deformed and where the deformation strikes in multiple directions and is closely spaced. The term comes from the Greek word for “tiled” (Russian investigators analyzing Venera 15 and Venera 16 imagery thought this terrain looked like a parquet floor). Like all tessera regions, it sits above the surrounding terrain at an elevation of 1 to 2 kilometers, and is heavily deformed by what appears to be contractional folding. Like most tessera units, the surrounding volcanic plains appear to have flowed around Alpha's margins and thus are younger than Alpha.

An infrared map prepared by the Venus Express orbiter shows that the rocks on the Alpha Regio plateau is lighter in colour and look old compared to the majority of the planet. On Earth, such light-coloured rocks are usually granite and form continents.[3]

See also[edit]

References[edit]

  1. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 5: Normal Science, NASA, 1996
  2. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 6: Pioneering on Venus and Mars, NASA, 1996
  3. ^ New map hints at Venus' wet, volcanic past | International Space Fellowship

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Alpha_Regio — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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36 news items

Science 2.0 (blog)

Science 2.0 (blog)
Tue, 14 Jan 2014 04:50:42 -0800

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Wired

Wired
Tue, 04 Dec 2012 06:48:45 -0800

An oblique radar image of Sapas Mons, a volcano on Venus. This image was taken in 1993 by the Magellan mission that mapped the surface of Venus. The lighter colors on the image are younger lava flows from Sapas Mons, although how young is still an ...

Universe Today

Universe Today
Tue, 14 Jul 2009 05:56:56 -0700

The new map shows that the rocks on the Phoebe and Alpha Regio plateaus are lighter in color and look old compared to the majority of the planet. On Earth, such light-colored rocks are usually granite and form continents. “If there is granite on Venus ...

European Space Agency

European Space Agency
Tue, 03 Apr 2007 07:47:22 -0700

New images and data from ESA's mission to Venus provide new insights into the turbulent and noxious atmosphere of Earth's sister planet. What causes violent winds and turbulences? Is the surface topography playing a role in the complex global dynamics ...

El País (España)

El País (España)
Mon, 17 Aug 2009 06:54:09 -0700

Las altas planicies de Phoebe y Alpha Regio muestran evidencias de rocas muy antiguas de colores claros. En la Tierra estas estructuras indican la presencia de granito, roca formada por la subducción del basalto volcánico en presencia de agua.

Futura Sciences

Futura Sciences
Sun, 19 Jul 2009 02:39:32 -0700

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Tue, 14 Jul 2009 06:10:35 -0700

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腾讯网

腾讯网
Tue, 14 Jul 2009 00:00:00 -0700

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