02.08.2017 Mars Reconnaissance Orbiter Observes Changes
01.26.2017 Mono Lake
01.25.2017 'Wing' Dike of Hardened Lava in New Mexico
01.25.2017 Blade-Like Martian Walls Outline Polygons
01.23.2017 Spirit And Opportunity By The Numbers
01.10.2017 Mars 2020 Rover - Artist's Concept
01.06.2017 Earth and Its Moon, as Seen From Mars
12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
11.15.2016 Schiaparelli Impact Site on Mars, Stereo
11.03.2016 Schiaparelli Impact Site on Mars, in Color
10.17.2016 MAVEN Captures Rapid Cloud Formation
10.17.2016 Mars' Nightside Atmosphere
10.17.2016 Ultraviolet Image Near Mars' South Pole
10.17.2016 Ultraviolet Mars Reveals Cloud Formation
10.05.2016 Dust Haze Hiding the Martian Surface in 2001
10.04.2016 Test of Lander Vision System for Mars 2020
10.03.2016 A Sharpened Ultraviolet View of Mars
10.03.2016 Curiosity Self-Portrait at 'Murray Buttes'
10.03.2016 Butte 'M9a' in 'Murray Buttes' on Mars
09.19.2016 Ribbon Cutting
09.09.2016 Farewell to Murray Buttes (Image 5)
09.09.2016 Farewell to Murray Buttes (Image 4)
09.09.2016 Farewell to Murray Buttes (Image 3)
09.09.2016 Farewell to Murray Buttes (Image 2)
09.09.2016 Farewell to Murray Buttes (Image 1)
08.26.2016 Out-of-this-World Records
08.04.2016 Mars Rover Is New Social Media Game
08.04.2016 Mars Rover Social Media Game
08.02.2016 Artist Concept for RIMFAX
07.20.2016 Viking 40 Year Anniversary Artwork: Medal
07.18.2016 Mars 2020 Range Trigger
07.14.2016 NASA to Launch Mars Rover in 2020
Whirlwind Detection by Curiosity in Gale CraterThe Rover Environmental Monitoring Station (REMS) on NASA's Curiosity Mars rover has detected dozens of whirlwinds, or vortex events, causing brief dips in atmospheric pressure, and sometimes other measurable effects.
The upper left graph of this set shows the pressure dip of one vortex detected by REMS. The time on the horizontal axis is marked as the number of seconds before or after the event. Pressure is indicated in pascals.
The lower left graph shows a corresponding dip in the amount of ultraviolet light measured by REMS, which could be caused by dust rushing by. This indicator has been rare among the vortices detected by REMS, and Curiosity's Gale Crater study area does not display the tracks of dust-lifting whirlwinds, which are common in other parts of Mars (for example at http://photojournal.jpl.nasa.gov/catalog/PIA09610). It may be that whirlwinds usually occur at Gale without lifting much dust.
The lower right chart shows a brief disruption in wind sensed by REMS in the seconds before and after a pressure-dip event.
The upper right chart provides comparisons of pressure dips measured by Curiosity (during the first 100 sols of its mission), by the Mars Pathfinder lander in 1997 and by the Phoenix Mars Lander in 2008. Although the three missions landed in different regions of Mars, they observed pressure dips of similar magnitude.
Image Credit: NASA/JPL-Caltech/CAB(CSIC-INTA)/FMI/Ashima Research