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USGS Science Topics

Specific things by name

Science Topics provides links to USGS scientific information by categories, which are types of things. We have seen that occasionally people are looking for some specific thing by its name instead. In most cases these things would be described in several different categories, so this page provides a way to find the corresponding categories.
ANWR
Arctic National Wildlife Refuge, an area of Federal land located on the North Slope of Alaska east and south of Prudhoe Bay. Exploitation of petroleum resources in this area is a political controversy.
DEM
Digital Elevation Model. A geospatial dataset describing topography in an area. The name refers also to a type of digital product provided by USGS.
Deepwater Horizon oil spill
Explosion, collapse, and destruction of an offshore oil drilling platform in April 2010 which released crude petroleum into the Gulf of Mexico near Louisiana
Galeras
Mountain in Colombia formed by an active stratovolcano of andesitic composition.
Katrina
Hurricane of 2005 causing massive damage in and around the city of New Orleans, Louisiana
Krakatoa
Active volcano located between Java and Sumatra in Indonesia. Exploded in 1883.
MODFLOW
Computer software implementing a mathematical model of ground-water flow, produced by USGS.
Marcellus Shale
Organically rich shale unit of middle Devonian age located in the Appalachian region of the eastern United States. Recently the source of natural gas production made economically viable through the use of lateral drilling and hydraulic fracturing techniques.
Mississippi River
Largest river basin of the country, located in the central part of the conterminous US.
Mount Merapi
Active volcano on the island of Java, Indonesia.
Mount Pinatubo
Active volcano located on the Philippine island of Luzon. Erupted violently in 1991.
Mount St. Helens
Active volcano in southwestern Washington, famous for its explosive eruption in May 1980. Subject of detailed studies by USGS.
Mount Vesuvius
Active volcano located near Naples, Italy. Historically known for burying the city of Pompeii in 79 A.D.
Names
Named instances of things. These will have many related terms from various thesauri.
Pangea
Supercontinent formed during the late Paleozoic era by the geographic convergence of most of the world's continental plates.
Richter scale
A measure of the magnitude of an earthquake based on the measured displacement of the earth at local sites. The original method was based on specific instrumentation but the general idea it describes is used in more modern estimates of earthquake magnitude.
Ring of fire
Earthquakes and volcanoes occur abundantly on the margins of the Pacific Ocean.
Rock cycle
General concept of the recycling of material in the earth's crust, from the formation of mountains and the transfer of their material through erosion to the oceans as sediment, to its reincorporation in new mountains through tectonic subduction.
San Andreas Fault
Geological fault system running through the southern half of California, on which earthquakes are common. The fault is a transform fault with right-lateral strike-slip motion.
Yellowstone
National park located in the northwest corner of Wyoming at the site of a large volcanic caldera.

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