NASA: Argentina - Laguna Verde - 10.05.13
Posted by Ricardo Marcenaro | Posted in NASA: Argentina - Laguna Verde - 10.05.13 | Posted on 18:31
This photograph taken by an astronaut
on the International Space Station shows water of different colors
within sub-basins of the Laguna (lake) Verde in the high Andes
of northwest Argentina. The lake floor lies at 4,095 meters (13,438
feet) above sea level, whereas the peak of the local volcano (west of
the lake, not shown) reaches over 3,000 meters higher (6,818 meters or
22,368 feet above sea level).
Laguna Verde (58 kilometers wide, 36 km long) often appears green,
giving rise to its name. This image shows the turquoise tint in the
central sub-basin (image center), with a yellow to black tinge to water
in the southern sub-basin (left)—also known locally as Laguna Negro. The
northernmost basin (right) appears black. The large gray zone
comprising much of the rest of Laguna Verde is likely a combination of
shallow water—only inches deep—and sunglint reflecting off the water
surface. The reason for the color differences is that many different
families of salt-loving organisms occupy hypersaline lakes such as
Laguna Verde. These microscopic organisms appear as different colors,
often bright, depending on the salinity and temperature of each water
body or sub-basin.
The rest of the lake floor is dry and appears white from the build-up
of thick salt deposits. Parallel lines around the southern subbasin
(Laguna Negro) indicate prior shorelines of this shrinking water body.
Evaporation removes water but leaves ephemeral shorelines marked with
white salt.
Astronaut photograph ISS035-E-25019
was acquired on April 20, 2013, with a Nikon D3S digital camera using a
400 millimeter lens, and is provided by the ISS Crew Earth Observations
experiment and Image Science & Analysis Laboratory, Johnson Space
Center. The image was taken by the Expedition 35 crew. It has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab
to help astronauts take pictures of Earth that will be of the greatest
value to scientists and the public, and to make those images freely
available on the Internet. Additional images taken by astronauts and
cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Caption by M. Justin Wilkinson, Jacobs/JETS at NASA-JSC.
- Instrument:
- ISS - Digital Camera
NASA: Argentina - Laguna Verde - 10.05.13
Ricardo M Marcenaro - Facebook
Blogs in operation of The Solitary Dog:
Solitary Dog Sculptor: byricardomarcenaro.blogspot.com
Solitary Dog Sculptor I: byricardomarcenaroi.blogspot.com/
Para:
comunicarse conmigo,
enviar materiales para publicar,
propuestas comerciales:
comunicarse conmigo,
enviar materiales para publicar,
propuestas comerciales:
marcenaroescultor@gmail.com
For:
contact me,
submit materials for publication,
commercial proposals:
For:
contact me,
submit materials for publication,
commercial proposals:
marcenaroescultor@gmail.com
My blogs are an open house to all cultures, religions and countries. Be a follower if you like it, with this action you are building a new culture of tolerance, open mind and heart for peace, love and human respect. Thanks :)
Mis blogs son una casa abierta a todas las culturas, religiones y países. Se un seguidor si quieres, con esta acción usted está construyendo una nueva cultura de la tolerancia, la mente y el corazón abiertos para la paz, el amor y el respeto humano. Gracias:)
(::)
Comments (0)
Publicar un comentario