Beta Regio

Beta Regio is a region of the planet Venus known as a volcanic rise. Measuring about 3000 km, it constitutes a prominent upland region of Venus centered at 25°18′N 282°48′E / 25.3°N 282.8°E[1].

The first features that showed up in early radar surveys of the planet were given the names of letters of the Greek alphabet. Beta Regio was one of those features. It was discovered and named by Dick Goldstein in 1964.[2] The name was approved by the International Astronomical Union's Working Group for Planetary System Nomenclature (IAU/WGPSN) between 1976 and 1979.[3] 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.

Volcanic rises are broad, sloping highlands over 1000 km across. They are cut by deep troughs 100–200 km across. These troughs are an example of continental rifting, and are evidence of surface tectonism.

Beta Regio is cut by a radar-bright north-south trough called Devana Chasma. The northern end has a volcano called Rhea Mons, and the southern end is dominated by a volcano titled Theia Mons.[4]

Beta Regio
Feature typeRegio
Coordinates25°18′N 282°48′E / 25.3°N 282.8°ECoordinates: 25°18′N 282°48′E / 25.3°N 282.8°E

References

  1. ^ "Beta Regio". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 5: Normal Science, NASA, 1996
  3. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 6: Pioneering on Venus and Mars, NASA, 1996
  4. ^ Carolynn Young, ed. (1990-08-01). The Magellan Venus Explorer' Guide. NASA.
Addams (crater)

Addams is a crater on Venus. It was named after Jane Addams.

Aikhulu Chasma

Aikhylu Chasma is a tectonic rift valley on Venus, and the landing site of the Venera 9 lander. It is located in Beta Regio.

Alpha Regio

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 Richard Goldstein in 1964. The name was approved by the International Astronomical Union's Working Group for Planetary System Nomenclature (IAU/WGPSN) between 1976 and 1979. 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 are 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.

Balch (crater)

Balch is a crater on Venus at latitude 29.9, longitude 282.9 in Devana Chasma, Central Beta Regio. It is 40 km in diameter and named after Emily Balch, though it was 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.

Cunitz (crater)

Cunitz is a crater on Venus at latitude 14.5, longitude 350.9 in western Eistla Regio. It is 48.6 km in diameter and was named for a 17th-century Silesian astronomer Maria Cunitz.

Devana Chasma

Devana Chasma is a weak extensional rift zone on Venus, with a length of 4000 km, a width of 150–250 km, and a depth reaching 5 km. Most of the faults are facing north-south. The rift is located in Beta Regio, a 3000 km rise created by volcanic activity. Mantle plumes rising from the bottom are the reason behind the formation of the rift zone. The slow extension rates in the rift may be driven by the same reason.

Goeppert-Mayer (crater)

Goeppert-Mayer is a crater on the planet Venus. It is 35 kilometers (22 mi) in diameter and lies above an escarpment at the edge of a ridge belt in Southern Ishtar Terra. West of the crater the scarp has more than one kilometer (0.6 miles) of relief.

Gregory (crater on Venus)

Grimke is a crater on Venus at latitude 7.1, longitude 95.8. It is 18 km in diameter and is named after Isabella Augusta Gregory.

Grimke (crater)

Grimke is a crater on Venus at latitude 17.2, longitude 215.3. It is 34.8 km in diameter and is named after Sarah Grimké.

Guinevere Planitia

Guinevere Planitia is an expansive lowland region of Venus that lies east of Beta Regio and west of Eistla Regio (quadrangle V-30). These low-lying plains, particularly in the western portion, are characterized by apparent volcanic source vents and broad regions of bright, dark, and mottled deposits. They are the only break in an equatorially connected zone of highlands and tectonic zones. The types, numbers, and patterns of mapped tectonic features and small volcanic landforms in the region provide important detail in the interpretation and evolution of venusian landscape.By using Pioneer Venus, Goldstone, and Arecibo data, these regions have been interpreted as widespread superposed flows that originated from the source vents. Fracture zones and lineament belt segments that have been identified are said to represent the Beta-Eistla deformation zones of the region. Magellan SAR images have revealed that most of these surface units are composed of volcanic land forms. There is also Seymour crater that is associated with extensive crater outflow deposits.

Heng-O Corona

Heng-O Corona is a corona in Guinevere Planitia on the planet Venus at Latitude 2° North, Longitude 355° East. It has a diameter of 1,060 kilometres (660 mi), and is the 2nd largest corona on Venus.

It is named for Heng O (also known as Chang'e), the Chinese goddess of the Moon.

Iaso Tholus

Iaso Tholus is a feature on Venus.

Jaszai Patera

Jaszai Patera is a 40 km (25 mi) to 30 km (19 mi) wide volcanic caldera on Venus containing steep sided lava domes.

Maria Celeste (crater)

Maria Celeste is an impact crater on Venus named in honor of Maria Celeste, the daughter of Galileo Galilei.

Maxwell Montes

Maxwell Montes is a mountain massif on the planet Venus, of which a peak (Skadi Mons) is the highest point on the planet's surface.

Mona Lisa (crater)

Mona Lisa is a crater on Venus at latitude 25.6, longitude 25.1. It is 79.4 km in diameter and was named after Lisa Giacondo, Leonardo da Vinci's model for the painting Mona Lisa.

Theia Mons

Theia Mons is a large shield volcano on Venus. Its name is derived from the titan of Greek mythology.LOCATION: Beta Regio

ELEVATION: about 6000 m

TYPE: shield volcano

STAGE: extinct

VOLCANIC FEATURES: caldera

Venera 10

Venera 10 (Russian: Венера-10 meaning Venus 10), or 4V-1 No. 661, was a Soviet unmanned space mission to Venus. It consisted of an orbiter and a lander. It was launched on June 14, 1975 03:00:31 UTC and had a mass of 5033 kg (11096 lb).

Venera 9

Venera 9 (Russian: Венера-9 meaning Venus 9), manufacturer's designation: 4V-1 No. 660, was a Soviet unmanned space mission to Venus. It consisted of an orbiter and a lander. It was launched on June 8, 1975, at 02:38:00 UTC and had a mass of 4,936 kilograms (10,882 lb). The orbiter was the first spacecraft to orbit Venus, while the lander was the first to return images from the surface of another planet.

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