Isabella is the second largest impact crater on Venus . Named after the Queen of Castile of the 15th century, Isabella I (the name was approved by the IAU in 1994 [1] ).
| Isabel | |
|---|---|
| lat Isabella | |
 Isabella on the radar image of the Magellan | |
| Specifications | |
| Diameter | 175 km |
| Title | |
| Eponym | |
| Location | |
| Heavenly body | Venus |
Streams
Two long, frozen, stream-like structures, extending to the south and southeast, come from Isabella . The end of the southern stream is partially surrounded by a round 40-kilometer thyroid volcano , formed earlier than this stream. The southeastern stream has complex structures of canals and parts of the stream, and its southeastern extremity is covered by emissions from the later 20-km crater Cohn ( lat. Cohn ). These flows, unique to Venusian craters, are the subject of continuous study for a large number of scientists involved in planetary geology. It is believed that these flows can consist of a “shock melt” of rock, molten from the energy released during the shock explosion. An alternative hypothesis considers them to be mudflows , which could consist of clouds of hot gases coupled with molten and solid rock components, flowing through the landscape during the collision, similar to the process that occurred during the violent eruption of Pinatubo volcano on the island of Luzon in 1991.