#StarDunes

MOST RECENT

From a high #escarpment in the #SierraDelRosario #illustrating the biggest #SandField in #NorthAmerica composed of #GrandCanyon #silt being #deposited , #exposed and #blown inland from the #ColoradoRiverDelta at the #GulfOfCalifornia. The #dunes formed here in the largest sand field in the #hottest #driest portion of the #continent are #StarDunes . Formed when #variable #winds #create #dunes with #MultipleSides.

Dune 45 is a star dune in the Sossusvlei area of the Namib Desert in Namibia.
#dune45 #dune45sunset #dune45sunrise #dune #stardune #stardunes #sossusvlei #sossusvleidunes #sossusvleidesert #namibia #namib #namibdesert

A quick trip to #deathvalleynationalpark. The #panamintdunes did not disappoint, @nitarita702 and I had the #stardunes to ourselves.
#hikedeathvalley #hikedeathvalley2018 #geology #sanddunes

The climate had me feeling so fatigued this morning that I really didn’t get a chance to enjoy the #stardunes 😞

#stardunes trip

#FastRepost from @esa_earth by @fastrepost_app
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Welcome to the the largest contiguous sand desert in the world: the Rub’ al Khali desert on the southern Arabian Peninsula! How cool are those star dunes? The yellow lines and dots in this false-colour image are sand dunes. . . .
Looking closer at the dunes in the lower right, many have three or more ‘arms’ shaped by changing wind directions and are known as ‘star dunes’. They tend to ‘grow’ upwards rather than laterally, and reach up to 250 m in height in some parts of the Rub’ al Khali.This image was captured by Sentinel-2A on 22 December 2015.
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#rubalkhali #RubAlKhalidesert #desert #sandunes #arabianpeninsula #stardunes #sand #dunes #star #starshaped #wind #earthfromspace #beautiful #pattern #art #natureart #planetart #sentinel2 #pidoftheday #sunday #sundaypic

Welcome to the the largest contiguous sand desert in the world: the Rub’ al Khali desert on the southern Arabian Peninsula! How cool are those star dunes? The yellow lines and dots in this false-colour image are sand dunes. . . .
Looking closer at the dunes in the lower right, many have three or more ‘arms’ shaped by changing wind directions and are known as ‘star dunes’. They tend to ‘grow’ upwards rather than laterally, and reach up to 250 m in height in some parts of the Rub’ al Khali.This image was captured by Sentinel-2A on 22 December 2015.
. . .
#rubalkhali #RubAlKhalidesert #desert #sandunes #arabianpeninsula #stardunes #sand #dunes #star #starshaped #wind #earthfromspace #beautiful #pattern #art #natureart #planetart #sentinel2 #pidoftheday #sunday #sundaypic

#GrandCanyon #sand blown in from hundreds of miles away into the #GranDesiertoDeAltar, producing the tallest #dunes in North America. Variable winds have produced the formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth. This is morning light playing on the surface of the dunes.

#GrandCanyon #sand blown in from hundreds of miles away into the #GranDesiertoDeAltar, producing the tallest #dunes in North America. Variable winds have produced the formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth. This is morning light playing on the surface of the dunes.

#GrandCanyon #sand blown in from hundreds of miles away into the #GranDesiertoDeAltar, producing the tallest #dunes in North America. Variable winds have produced the formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth. This is morning light playing on the surface of the dunes.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

The Sierra del Rosario is an isolated #granite mountain range being buried by the #sand of the #GrandCanyon blown in from hundreds of miles away, producing the tallest #dunes in North America. It's spine appears like the beads of its namesake rosary as variable winds in the area produce the rare formation of #StarDunes, those with multiple sides. Here everything is subject to the sand-blasting and sun-bleaching conditions that form some of the most sublime artifacts on earth.

#repost from @esa_earth
Rolling sand dunes in the expansive Rub’ al Khali desert on the southern Arabian Peninsula are pictured in this image from the Sentinel-2A satellite.
Also known at the ‘Empty Quarter’, the Rub’ al Khali is the largest contiguous sand desert in the world. Precipitation rarely exceeds 35 mm a year and regular high temperatures are around 50°C.
The yellow lines and dots in this false-colour image are sand dunes. Looking closer at the dunes in the lower right, many have three or more ‘arms’ shaped by changing wind directions and are known as ‘star dunes’. They tend to ‘grow’ upwards rather than laterally, and reach up to 250 m in height in some parts of the Rub’ al Khali.
The dunes are interspersed with hardened flat plains – remnants of shallow lakes that existed thousands of years ago, formed by monsoon-like rains and runoff. The multispectral instrument on Sentinel-2 uses parts of the infrared spectrum to detect subtle changes in vegetation cover, but can also see changes in mineral composition where vegetation is sparse. In this image, shades of brown to bright purple show the mineral composition, possibly including salt or gypsum.
This image was captured by Sentinel-2A on 22 December 2015.
#Copernicus #Sentinel #Sentinel2 #satellite #ColourVision #SandDunes #RubAlKhali #desert #ArabianPeninsula #Arabia #SatelliteImage #EmptyQuarter #LargestSandDesert #FalseColour #dunes #StarDunes #FlatPlains #ShallowLakes #vegetation #salt #gypsum
Copyright: contains modified Copernicus Sentinel data (2015), processed by ESA, CC BY-SA 3.0 IGO
Reposted in @gridsapp

#repost from @esa_earth
Rolling sand dunes in the expansive Rub’ al Khali desert on the southern Arabian Peninsula are pictured in this image from the Sentinel-2A satellite.
Also known at the ‘Empty Quarter’, the Rub’ al Khali is the largest contiguous sand desert in the world. Precipitation rarely exceeds 35 mm a year and regular high temperatures are around 50°C.
The yellow lines and dots in this false-colour image are sand dunes. Looking closer at the dunes in the lower right, many have three or more ‘arms’ shaped by changing wind directions and are known as ‘star dunes’. They tend to ‘grow’ upwards rather than laterally, and reach up to 250 m in height in some parts of the Rub’ al Khali.
The dunes are interspersed with hardened flat plains – remnants of shallow lakes that existed thousands of years ago, formed by monsoon-like rains and runoff. The multispectral instrument on Sentinel-2 uses parts of the infrared spectrum to detect subtle changes in vegetation cover, but can also see changes in mineral composition where vegetation is sparse. In this image, shades of brown to bright purple show the mineral composition, possibly including salt or gypsum.
This image was captured by Sentinel-2A on 22 December 2015.
#Copernicus #Sentinel #Sentinel2 #satellite #ColourVision #SandDunes #RubAlKhali #desert #ArabianPeninsula #Arabia #SatelliteImage #EmptyQuarter #LargestSandDesert #FalseColour #dunes #StarDunes #FlatPlains #ShallowLakes #vegetation #salt #gypsum
Copyright: contains modified Copernicus Sentinel data (2015), processed by ESA, CC BY-SA 3.0 IGO
Reposted in @gridsapp

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