Study Ties Venus’s 6,000-Km Acid Cloud Waves to Giant Hydraulic Jump
Updated
Updated · Gizmodo · May 11
Study Ties Venus’s 6,000-Km Acid Cloud Waves to Giant Hydraulic Jump
2 articles · Updated · Gizmodo · May 11
A new Journal of Geophysical Research: Planets study says an unstable eastward wave triggers a giant hydraulic jump that lifts sulfuric acid vapor and forms Venus’s vast cloud fronts.
Those fronts can stretch about 6,000 kilometers around the planet and help explain repeated acidic cloud waves first seen by Japan’s Akatsuki orbiter in 2016.
Numerical simulations also indicate the same process helps sustain Venus’s superrotation—winds racing roughly 60 times faster than the planet spins.
The finding addresses a mystery traced in observations back to at least 1983 and could guide future mission planning and atmospheric studies beyond Venus, including Mars.
This giant atmospheric shockwave was found on Venus, but could a similar force be secretly reshaping the weather on Mars?
With planned Venus missions now at risk, will we ever confirm the solar system's largest 'hydraulic jump' wave up close?
Could lost Soviet and US probes, surprisingly preserved on Venus's surface, hold the key to surviving its extreme environment?
The 6,000-km Venusian Cloud Front: How a Giant Hydraulic Jump Reshapes Planetary Science and the Search for Life
Overview
A major breakthrough has solved the mystery of Venus’s 6,000-kilometer-wide cloud front, first observed by the Akatsuki spacecraft. Scientists discovered this feature is the largest hydraulic jump in the solar system, caused by an unstable Kelvin wave in Venus’s atmosphere. This instability triggers a sudden drop in wind speed, creating a strong updraft that lifts sulfuric acid vapor, forming the visible cloud line. The discovery links horizontal wave motion with powerful vertical transport, helping explain Venus’s superrotation. This finding reshapes planetary science, impacts future mission design, and guides the search for life by highlighting the need for advanced instruments and robust exploration strategies.