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  2. File:Mount St. Helens, one day before the devastating ...

    en.wikipedia.org/wiki/File:Mount_St._Helens,_one...

    ==Description== USGS photo of Mt. Saint Helens. '''Caption''': This slide shows Mount St. Helens on May 17 , 1980 , one day before the devastating eruption. The view is from Johnston Ridge, six miles (10 kilometers) northwest o

  3. Category:United States Geological Survey images - Wikipedia

    en.wikipedia.org/wiki/Category:United_States...

    Media in category "United States Geological Survey images" The following 122 files are in this category, out of 122 total. Back Brook, New Jersey (map).jpg 1,401 × 584; 117 KB

  4. 1980 eruption of Mount St. Helens - Wikipedia

    en.wikipedia.org/wiki/1980_eruption_of_Mount_St...

    USGS photo showing a pre-avalanche eruption on April 10 Photo showing the bulge growing due to a cryptodome on April 27. A second, new crater and a blue flame were observed on March 29. [21] [22] The flame was visibly emitted from both craters and was probably created by burning gases.

  5. Joseph F. Poland (hydrologist) - Wikipedia

    en.wikipedia.org/wiki/Joseph_F._Poland_(hydrologist)

    This photo shows 28 feet of lost surface level altitude over a 52-year period. [11] Markers are placed to show the previous ground level altitudes for the years 1925, 1955, and 1975. [ 12 ] The utility pole pictured is located is southwest of Mendota on the western side of the San Joaquin valley, east of I-5, on Panoche Avenue.

  6. United States Geological Survey - Wikipedia

    en.wikipedia.org/wiki/United_States_Geological...

    United States Geological Survey marker on the summit of Maiden Peak (Washington) While much less expensive to compile and produce, the revised digital U.S. topo maps have been criticized for a lack of accuracy and detail in comparison to older generation maps based on aerial photo surveys and field checks. [34]

  7. Center for Earth Resources Observation and Science - Wikipedia

    en.wikipedia.org/wiki/Center_for_Earth_Resources...

    The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.

  8. Geophotography - Wikipedia

    en.wikipedia.org/wiki/Geophotography

    Geophotography (also geo-photography or geological photography) is a subfield of geology that involves the use of photography or other imaging techniques in the visible or near-visible (e.g. ultraviolet, infrared) spectrum to realistically record objects, features, and processes of geological significance.

  9. Aerial photograph interpretation (geology) - Wikipedia

    en.wikipedia.org/wiki/Aerial_photograph...

    Aerial photograph interpretation is a method of extrapolating geological details of the ground surface from aerial images. [1] It allows geologists to analyze the distinguishing geological features and structures, plant cover, past history of the site, soil properties, and topography of the study area.