1. Active volcanism on Venus?
Jess Brennan

2. Earth vs. Venus
From a far Venus seem very similar to Earth (Size, Composition, Closeness to the sun, Density)
But when looked at up close Venus has…
Much higher surface pressure (90x Earth)
Much higher surface temperature (470C)
Much thicker atmosphere
Only one global lithospheric plate
Same size/Density, Have crust, mantle, core , Similar orbit to earth's , Thick atmosphere clouds, relatively young surface

3. Volcanoes on Venus Over 1,600 major volcanoes and volcanic features
But are any of them
currently active?
Ganiki Chasma rift zone
Rifts, mantle plumes ect because of single plate. No subduction zones

4. The Research
Scientists compared infrared radiation images of Venus over a span of time
Found four areas of interest
within the Ganiki Chasma rift zone
that could be linked to volcanic
activity on Venus

5. The Images
Taken by the one of the four spectral cameras on the Venus Monitoring Camera (VMC) which is centered at 1.01µm
Variations in brightness are due to surface temperature or surface emissivity
microns

6. Are the Bright Spots From the Surface Temperature or Emissivity?
These bright spots are due to surface temperature.
Variation in surface emissivity cannot exceed that of the ideal black body
Stefan-Boltzman law
stefan-boltzmann law

7. Could These Changes be Due to Volcanic Activity?
They did not move in surface coordinates
Brighter that the limit imposed by emissivity variation
Changes appeared and disappeared

9. Estimated hotspots
Very similar to eruptive activity on Earth
These hotspots are likely to have effusive
like eruptions due to conditions on Venus

10. So is there Active Volcanism on Venus?