AI-generated Key Takeaways
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The Landsat 4 TM Collection 1 Tier 1 8-Day Raw Composite dataset provides 30-meter resolution imagery from August 21, 1982, to December 11, 1993.
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The dataset comprises 8-day composites of Landsat 4 TM scenes, utilizing the raw digital number (DN) values for at-sensor radiance.
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Each composite includes all scenes from an 8-day period, prioritizing the most recent pixel for the composite value.
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Bands include blue, green, red, near-infrared, two shortwave infrared, thermal infrared, and a quality assessment band.
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The dataset is publicly available and may be used without copyright restrictions, but USGS acknowledgement is requested.
- Dataset Availability
- 1982-08-21T00:00:00Z–1993-12-11T00:00:00Z
- Dataset Provider
- USGS/Google
- Tags
Description
These Landsat 4 TM Collection 1 Tier 1 composites are made from Tier 1 orthorectified scenes, using the DN values, representing scaled, calibrated at-sensor radiance.
These composites are created from all the scenes in each 8-day period beginning from the first day of the year and continuing to the 360th day of the year. The last composite of the year, beginning on day 361, will overlap the first composite of the following year by 3 days. All the images from each 8-day period are included in the composite, with the most recent pixel as the composite value.
Bands
Resolution
30 meters
Bands
| Name | Wavelength | Description | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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B1 |
0.45 - 0.52 μm | Blue |
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B2 |
0.52 - 0.60 μm | Green |
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B3 |
0.63 - 0.69 μm | Red |
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B4 |
0.76 - 0.90 μm | Near infrared |
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B5 |
1.55 - 1.75 μm | Shortwave infrared 1 |
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B6 |
10.40 - 12.50 μm | Thermal Infrared 1. Resampled from 60m to 30m. |
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B7 |
2.08 - 2.35 μm | Shortwave infrared 2 |
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BQA |
Landsat Collection 1 QA Bitmask (See Landsat QA page) |
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Terms of Use
Terms of Use
Landsat datasets are federally created data and therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.
Acknowledgement or credit of the USGS as data source should be provided by including a line of text citation such as the example shown below.
(Product, Image, Photograph, or Dataset Name) courtesy of the U.S. Geological Survey
Example: Landsat-7 image courtesy of the U.S. Geological Survey
See the USGS Visual Identity System Guidance for further details on proper citation and acknowledgement of USGS products.