slide1
Download
Skip this Video
Download Presentation
NOTES: Venus 0.95 DEarth Surface Temp. = 900 OF, Greenhouse effect. Atm. Pressure = 90 x Earth\'s

Loading in 2 Seconds...

play fullscreen
1 / 17

NOTES: Venus 0.95 DEarth Surface Temp. = 900 OF, Greenhouse effect. Atm. Pressure = 90 x Earth's - PowerPoint PPT Presentation


  • 110 Views
  • Uploaded on

NOTES: Venus 0.95 DEarth Surface Temp. = 900 OF, Greenhouse effect. Atm. Pressure = 90 x Earth\'s Atmosphere : 96% CO2, 3.5% Nitrogen. Clouds of sulfuric acid, sulfur dioxide, sulfur, indicating live volcanism? 2. Rotation : siderial--243 days, solar–117 days.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' NOTES: Venus 0.95 DEarth Surface Temp. = 900 OF, Greenhouse effect. Atm. Pressure = 90 x Earth's' - elden


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

NOTES: Venus

  • 0.95 DEarth
  • Surface Temp. = 900 OF, Greenhouse effect.
  • Atm. Pressure = 90 x Earth\'s
  • Atmosphere: 96% CO2, 3.5% Nitrogen. Clouds of sulfuric acid, sulfur dioxide,
  • sulfur, indicating live volcanism?
  • 2. Rotation: siderial--243 days, solar–117 days.
  • 3. Surface Features: 27% Lowlands, 65% rolling plains, 8% highlands.
  • Cones, faults, craters, multiple lava flows.
  • A. Ishtar Terra--US sized lava-filled basin--highlands
  • B. Maxwell Montez--Everest\'s height--100 km Diam.
  • Cleopatra, crater on it\'s flank.
  • C. White magnetite (?) above 2.5 km.
  • D. Surface--young to 800 million years--crater cycle.
  • E. Surface too cracked to form plates, but molten core
  • distorts surface with mantle convective flow.
  • F. Atmosphere rotates much faster than surface
  • creating wind features--impact ejected to west, streaks near ridges.
  • G. 100,000 small \'shield\' volcanos--clusters due to hot spots,
  • volcanic material near surface. No plumes show--high pressure.
  • H. Lava Channels--one 7,000 (!) Km long
  • I. Calderas over 100 km in diameter.
  • 4. Visiting Spacecraft: 1962-1975-Three Mariners (USA) rudimentary mapping.
  • 1962--Venera--Soviet surface landing.
  • 1989-90--Magellan (USA)--accurate radar maps.
slide4

Venus

0.95 Diamearth

Surface Temp. = 900 OF, Greenhouse effect.

Atm. Pressure = 90 x Earth\'s

In UV

Radar map

slide5

Atmosphere: 96% CO2, 3.5% Nitrogen. Clouds of sulfuric acid, sulfur dioxide,

sulfur, indicating live volcanism?

slide7

3. Surface Features: 27% Lowlands, 65% rolling plains,

8% highlands. No oceans—way too hot!

Cones, faults, craters, multiple lava flows.

A. Ishtar Terra--US sized lava-filled basin—highlands— lower right.

B. Aphrodite—reflective volcanic cones--top.

slide8

Carl Sagan realized Venus was warmed

by what he called a ‘greenhouse effect’—

almost all carbon dioxide atmosphere  very hot.

slide11

Surface--young to 800 million years--crater cycle.

Every few million years, Venus may blow her top.

slide12

Atmosphere rotates much faster than surface

creating wind features--impact ejected to west, streaks near ridges.

slide13

100,000 small \'shield\' volcanos--clusters due to hot spots, volcanic material near surface. No plumes show

--high pressure

slide14

Lava Channels--one 7,000 (!) km

Calderas over 100 km in diameter.

slide15

Visiting Spacecraft: 1962--Venera--Soviet surface landing.

1962-1975-Three Mariners (USA) rudimentary mapping.

2005now—Venus Express (Europe).

slide17

Venus Express—2005-now.

Orbiter put up by European Space Agency (ESA).

Attempt to learn details of Venus’ atmosphere and movement,

unveil current volcanism and cause of super-rotation – the

\'mismatch\' in rotation speeds between the cloud tops

and the planet surface.

ad