Estimate Request for the image
V01760
To make a request for several images, go back to the
Picture Library
and add them to the Light Box.
Add to my light box
View my light box
Ref :
V01760
Theme :
Looking at Earth - Islands - Reef
(286 images)
Title :
Coral Reefs: Spires of Life
Caption :
These images from the Landsat 7 satellite depict a number of coral reefs like delicate brush strokes of color against an indigo canvas. Landsat 7 'sees' the Earth differently than a camera. By detecting light in discretely separate ranges of color or more accurately, electromagnetic bands the instrument can tailor images to highlight particular features being studied by experts. The different shades in these images highlight various features specific to each coral colony. Patches of bright red show places where coral reefs are actively populated with living organisms. The bands of color in the first image show 'natural color', essentially the colors we would see if we could look down from Landsat 7 ourselves. But in this image, an exchange of the visible light red band for one that sees near infrared data instead makes some areas on the reef jump out in bright red relief. The near infrared band best gathers the electromagnetic signature of a thriving ecosystem. In these images where there is not a red signal, the coral is not actively growing. It's important to remember that much like the bark of a tree is primarily the only actively growing part of the organism, not all of the area of a coral reef needs to be growing to indicate health. Living coral makes its home on the ancient beds of ancestors, which essentially provide a foundation for newer generations to anchor themselves. One year, 900 locations, thousands of coral reefs. That's the tally of NASA's Landsat 7 satellite as it continues to deliver cutting edge images and information about the Earth. Data being presented this week at an international conference in Indonesia is the first assessment of the physical condition of major reefs from the the new Landsat 7 collection of images. More than 5000 coral reef scenes have been amassed in the first year of Landsat 7's operation. In that collection, many reefs have been seen more than once, offering scientists an opportunity to study seasonal variations as well as other changes in the reefs caused by hurricanes and climate change.
to specify how you want to use these images. You can also send your request by
E-mail
To make a request for several images, go back to the
Picture Library
and add them to the Light Box.
Image(s) use :
----------- Specify usage --------------
Advertising
Advertising in Press
Press
Publishing
CD Rom-Internet
Movie-Video-TV
Non-commercial
Private use
Other, please specify
Reproduction format of the image in the final document :
----------- Specify format ---------------
Up to 1/8 page
Up to 1/4 page
Up to 1/2 page
Up to 3/4 page
Up to full page
Double page
Front or Back cover
Other, please specify
Print run of the document on which the image is reproduced :
----------- Specify print run ------------
1 to 100
101 to 500
501 to 1000
1001 to 2000
2001 to 2500
2501 to 5000
5001 to 10 000
10 001 to 25 000
25 001 to 50 000
50 001 to 100 000
100 001 to 500 000
500 001 to 1 000 000
Other, please specify
Number of consecutive uses :
--------- Specify number of uses -------
1
2
3
4
5
6
7
8
9
10
11
12
Other, please specify
If image is reproduced in the Press, please specify number of titles :
If image is reproduced as a poster
please specify size of the poster :
------- Specify poster format ---------
Up to 50 x 60 cm
Up to 80 x 120 cm
Up to 240 x 300 cm
Up to 360 x 480 cm
Other, please specify
Give all useful information or specify the use of the image(s) in this box :