May be of interest; I had to dig a bit to find information for a few
inquiries, so I thought I would share;

USGS Long Term Archive, Digital Imagery:

New EarthExplorer Datasets released October 31, 2013:

Authenticity of Digital Imagery with the USGS Archive:

Digital Imagery Product Overview:


Explore the world’s largest civilian collection of images of the Earth’s
surface. Find satellite images and data, aerial photography, elevation and
land cover datasets, digitized maps, and our Image Gallery collections.

Our Archive spans from 1937 aerial photographs to millions of satellite
images of the Earth’s surface, starting with the original Earth orbits in
the 1960’s and first Landsat satellite in 1972, to our current hourly
additions of satellite images. Click on any product category to review
detailed information on the products, plus how to order or download
selected images at no charge.

[image: >] Aerial Photography

NameDescriptionAvailabilityAerial Photo

Aerial Photo Mosaics were the aerial photo finding aids during the creation
and photo revision of the U.S. Geological Survey (USGS) topographic map
EarthExplorer <>Aircraft

Digital imagery acquired from several multispectral scanners on board NASA
ER–2, NASA C–130B, and NASA Learjet aircrafts
(1982 - 1995)
EarthExplorer <>Antarctic Single Frame

A collection of aerial photographs over the Antarctic that is available for
downloading as medium or high resolution digital images.
(1946 - 2000)
EarthExplorer <>Digital Orthophoto Quadrangle
(DOQs) <>

Digital images of aerial photos which combine the image characteristics of
the photo with the georeferenced qualities of a map.
(1987 - present)
EarthExplorer <>High Resolution Orthoimagery
(HRO) <>

Digital images of orthorectified aerial photographs with a pixel resolution
of 1-meter or finer from across the United States.
(2000 - Present)
EarthExplorer <>National Aerial Photography
Program (NAPP) <>

More than 1.3 million cloud-free black-and-white and color infrared aerial
photographs over the United States were obtained from an altitude of 20,000
GloVis <>,EarthExplorer<>National
Agriculture Imagery Program (NAIP) JPEG2000<>

Aerial imagery acquired by the U.S. Department of Agriculture (USDA) during
agricultural growing seasons in the conterminous United States.
EarthExplorer <>National High Altitude
Photography (NHAP) <>

Black-and-white and color infrared aerial photographs obtained from an
altitude of 40,000 feet over the United States that are available as medium
or high resolution digital images. (1980-1989)
GloVis <>,EarthExplorer<>Side-Looking
Airborne Radar (SLAR) <>

The Side-Looking Airborne Radar (SLAR) is an image-producing system that
derives its name from the fact that the radar beam is transmitted from the
side of the aircraft during data acquisition.
EarthExplorer <>Single Frame

Black-and-white, natural color, and color infrared aerial photographs over
the United States are available in a digital format at a resolution of 400
or 1,000 dpi.
(1937 - present)
EarthExplorer <>Space Acquired

Photos taken from the International Space Station (ISS), Shuttle, Skylab,
Gemini, and Apollo missions.
(1965 - present)
EarthExplorer <>The Advanced Solid-state
Array Spectroradiometer (ASAS) <>Other airborne
imagery collections: MASTER MODIS/ASTER Airborne
EarthExplorer <>U.S. Antarctic Resource
Center - Antarctic Flight Line Maps<>

The Antarctic Flight Line Maps or Flight Indexes are a collection of
1:250,000 scale topographic maps over Antarctica from the U.S. Antarctic
Resource Center (USARC).
EarthExplorer <>,USARC<>

[image: >] Advanced Very High Resolution Radiometer (AVHRR)

NameDescriptionAvailabilityAdvanced Very High Resolution Radiometer

1-km multispectral data from the NOAA satellite series.
(1979 to present)
NOAA Archive <>AVHRR
Normalized Difference Vegetation Index (NDVI)

Weekly and biweekly NDVI composites based on 1-km AVHRR data (1989 to
EarthExplorer <>

[image: >] Calibration Validation Reference Sites

NameDescriptionAvailabilityCalibration/Validation Test

This collection of test sites provides critical information on the post
launch characterization and calibration of space-based optical imaging
sensors to assist the global science community in providing more accurate
land/climate studies.
(1972 to present)
EarthExplorer <>

[image: >] Commercial

NameDescriptionAvailabilityCommercial Data Purchases (CDP)

Collection of licensed commercial imagery from various vendors. Available
to government agencies only.
EarthExplorer <>

[image: >] Declassified Data

NameDescriptionAvailabilityDeclassified Satellite Imagery -

A collection of declassified military intelligence photographs from the
CORONA, ARGON, and LANYARD satellite systems in digital format.
(1960 to 1972)
EarthExplorer <>Declassified Satellite
Imagery - 2 <>

A collection of declassified military intelligence photographs from the
KH-7 surveillance and KH-9 mapping satellite systems in digital format.
(1963 to 1980)
EarthExplorer <>

[image: >] Digital Elevation

NameDescriptionAvailabilityGlobal 30 Arc-Second Elevation

Global 1-km digital raster data derived from a variety of sources.
EarthExplorer <>Global Multi-resolution
Terrain Elevation Data 2010 (GMTED2010) <>

The Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010)
provides a new level of detail in global topographic data. The GMTED2010
product suite contains seven new raster elevation products for each of the
30-, 15-, and 7.5-arc-second spatial resolutions and incorporates the
current best available global elevation data.
EarthExplorer <>HYDRO1K<>

A global hydrologic database derived from 1996 GTOPO30 data.
EarthExplorer <>Light Detection and Ranging
(LiDAR) <>

LIDAR point clouds provide 3-dimensional horizontal position and vertical
elevation data with a nominal pulse spacing of 3 meters or finer from
across the United States. (2000-present)
EarthExplorer <>National Elevation Dataset
(NED) <>

The National Elevation Dataset (NED) is the primary elevation data product
of the USGS. The NED is a seamless dataset with the best available raster
elevation data of the conterminous United States, Alaska, Hawaii, and
territorial islands.
National Map <>Shuttle Radar
Topography Mission (SRTM) <>

Shuttle Radar Topography Mission data were used to generate digital
elevation data with a resolution of 1 arc-second for the United States and
3 arc-seconds for global coverage.
EarthExplorer <>Shuttle Radar Topography
Mission (SRTM) Research Grade <>

Research grade (version 1) SRTM data are available through the Jet
Propulsion Laboratory and the SRTM/X-SAR data are available through the
German Aerospace Center (DLR).

[image: >] Digital Line Graphs (DLG)

NameDescriptionAvailabilityDigital Line Graphs

Digital Line Graphs (DLGs) are digital vector representations of
cartographic information derived from USGS maps and related sources.
EarthExplorer <>SRTM Water Body

The SRTM Water Body Data files are a by-product of the data editing
performed by the National Geospatial-Intelligence Agency (NGA) to produce
the finished SRTM Digital Terrain Elevation Data Level 2 (DTED® 2).
EarthExplorer <>

[image: >] Digital Maps

NameDescriptionAvailabilityDigital Raster Graphics

A Digital Raster Graphic (DRG) is a scanned image of a USGS standard series
topographic map, including all map collar information.
EarthExplorer <>National

Maps of America are what you'll find and make on Maps
that capture and depict the patterns, conditions, and trends of American
life. Maps that supplement interesting articles. Maps that tell their own
stories. Maps that cover all of the United States or just your area of
EarthExplorer <>

[image: >] Earth Observing One (EO-1)

NameDescriptionAvailabilityEO-1 (Earth Observing-1)<>

10- to 30-meter multispectral and hyperspectral data from the Earth
Observing-1 (EO-1) Extended Mission.
(2000 to present)
GloVis <>,EarthExplorer<>

[image: >] Forest Carbon Tracking (FCT)

NameDescriptionAvailabilityForest Carbon

*The Forest Carbon Tracking Task (GEO FCT) *was created to support
countries wanting to establish national forest-change, carbon estimation
and reporting systems.
EarthExplorer <>

[image: >] Global Fiducials

NameDescriptionAvailabilityGlobal Fiducials Library<>

The Global Fiducials Program is a collaborative effort between Federal
Civil Agencies, Academia, and the Intelligence Community. The principal
goal of the Global Fiducials Program was to build and maintain a long-term
record of data to support scientists and policy makers involved in that
collaborative effort.
EarthExplorer <>

[image: >] Global Land Survey (GLS)

NameDescriptionAvailabilityGlobal Land Survey (GLS)<>

GLS2010, GLS 2005, GLS 2005 Islands, GLS 2000, GLS 1990, and GLS 1975
EarthExplorer <>Landsat Image Mosaic Of
Antarctica (LIMA) <>

Discover Antarctica in greater detail than ever before by exploring the
nine versions of the Landsat Image Mosaic of Antarctica (LIMA). Each
version highlights different features of the landscape.
EarthExplorer <>

[image: >] Heat Capacity Mapping Mission (HCMM)

NameDescriptionAvailabilityHeat Capacity Mapping Mission

HCMM was the first of a series of NASA Applications Explorer Missions
(AEM-A) that collected visible and thermal band data. A HCMM scene has a
width of 715 km with a moderate resolution of 500-600 meters. (1978-1980)
EarthExplorer <>

[image: >] Joint Experiment for Crop Assessment and Monitoring (JECAM) Sites

NameDescriptionAvailabilityJoint Experiment for Crop Assessment and
Monitoring (JECAM) <>

The overarching goal of JECAM is to reach a convergence of approaches,
develop monitoring and reporting protocols and best practices for a variety
of global agricultural systems. JECAM will enable the global agricultural
monitoring community to compare results based on disparate sources of data,
using various methods, over a variety of global cropping systems.
EarthExplorer <>

[image: >] Land Cover Products

NameDescriptionAvailabilityGlobal Land Cover Characterization

A global land cover database primarily derived from 1992 to 1993 1-km AVHRR
Not availableLand Use and Land Cover (LULC) <>

Historical U.S. land use and land cover data derived from 1970`s and 1980`s
aerial photography.
Not availableNational Land Cover <>

This National Land Cover Database (NLCD) contains standardized land cover
components useful for a variety of applications.
EarthExplorer <>

[image: >] Landsat Satellite Archives

NameDescriptionAvailabilityLandsat 8 OLI (Operational Land Imager) and TIRS
(Thermal Infrared Sensor) <>

15- to 30- meter multispectral data from Landsat 8
GloVis <>, EarthExplorer<>
,LandsatLook Viewer <>Landsat Enhanced Thematic
Mapper Plus (ETM+) <>15- to 30-meter
multispectral data from Landsat 7. (1999 to
, EarthExplorer <>,LandsatLook
Multispectral Scanner (MSS) <>

80-meter multispectral data from Landsats 1 - 5. (1972-1992)

GloVis <>, EarthExplorer<>
,LandsatLook Viewer <>Landsat Thematic Mapper
(TM) <>

30-meter multispectral data from Landsats 4 and 5. (1982 to 2012)
GloVis <>, EarthExplorer<>
,LandsatLook Viewer <>

[image: >] Landsat Satellite Legacy

NameDescriptionAvailabilityLandsat Multispectral Scanner (MSS) Film

Landsats 1 through 5 MSS scenes from film sources are available in digital
format as a color composite and as four black-and-white spectral bands.
EarthExplorer <>Landsat Thematic Mapper (TM)
Film Only <>

Landsat 4 and 5 TM scenes scanned from film images-available as color
composite or 7 B/W spectral bands.
EarthExplorer <>NASA Landsat Data Collection
(NLDC) <>

Selected MSS and TM scenes (Landsats 1-5) from the NASA Landsat Data
Collection (1975 to present).
EarthExplorer <>North American Landscape
Characterization (NALC) <>

Time-series triplicates of selected MSS scenes (Landsats 1-5) for the U.S.
and Mexico. Average acquisition dates are 1973, 1986, and 1991.
GloVis <>,EarthExplorer<>Tri-Decadal
Global Landsat Orthorectified Overview<>

An overview of the Tri-Decadal Global Landsat Orthorectified data
GloVis <>,EarthExplorer<>

[image: >] Multi-Resolution Landsat Characterization (MRLC)

NameDescriptionAvailabilityMulti-Resolution Land Characteristics 2001
(MRLC2001) <>

Selected ETM+ and TM scenes (Landsats 7 and 5) from the National Land Cover
Characterization 2001 project.
GloVis <>,EarthExplorer<>

[image: >] NASA LPDAAC Collections

NameDescriptionAvailabilityAdvanced Spaceborne Thermal Emission and
Reflection Radiometer (ASTER) <>

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)
is one of a number of instruments on board the Terra platform, which was
launched in December 1999.
Data Pool <>,GloVis<>
,Reverb <>Moderate Resolution Imaging
Spectroradiometer (MODIS) <>

Moderate-resolution (250- to 1000-meter) multispectral data from the
Terra<> Satellite
(2000 to present) and Aqua <> Satellite (2002 to
Data Pool <>,GloVis<>
,EarthExplorer <>,Reverb<>NASA
SRTM-3 <>

SRTM data are organized into individual rasterized cells, or tiles, each
covering one degree by one degree in latitude and longitude. Sample spacing
for individual data points is either 1 arc-second, 3 arc-seconds, or 30
arc-seconds, referred to as SRTM1, SRTM3 and SRTM30, respectively.
EarthExplorer <>

[image: >] Orbview-3


GeoEye’s OrbView-3 satellite was among the world’s first commercial
satellites to provide high-resolution imagery from space. (2003 to 2007)
EarthExplorer <>

[image: >] Radar

NameDescriptionAvailabilitySpaceborne Imaging Radar C-band

Imaging radar data (C-band and L-band) from two Space Shuttle missions
EarthExplorer <>

[image: >] SPOT - Historical

NameDescriptionAvailabilitySPOT - North American Data

The USGS has contracted with SPOT Image Corporation to acquire and provide
Satellite Pour l'Observation de la Terre (SPOT) satellite data for calendar
years 2010 and 2011.
Not availableSPOT Historical <>

The SPOT Historical archive  holdings maintained and preserved by the
USGS/Earth Resources Observation and Science (EROS) Center were received
from the SPOT IMAGE Corporation in 1999. The French space agency, Centre
National d'Etudes Spatiales (CNES), owns and operates the SPOT satellite
system and worldwide commercial operations  are anchored  by private
companies (i.e., SPOT IMAGE Corp. of the United States and other
distributors around the world).
EarthExplorer <>

[image: >] Vegetation Monitoring

NameDescriptionAvailabilityeMODIS (EROS Moderate Resolution Imaging
Spectroradiometer) <>

The eMODIS collection is based on the Moderate Resolution Imaging
Spectroradiometer (MODIS) data acquired by the National Aeronautics and
Space Administration's (NASA) Earth Observing System (EOS).
EarthExplorer <>Vegetation Drought Response
Index (VegDRI) <>

Weekly VegDRI maps integrate remote sensing, climate, and biophysical data
to provide timely drought information for the conterminous United States.
EarthExplorer <>

Emily Wild
Librarian (Physical Scientist)
U.S. Geological Survey
Denver Library
Box 25046, MS 914
Denver Federal Center
Denver, CO 80225-0046
ph: (303) 236-1003
[log in to unmask]

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