The EarthExplorer trifold provides basic information for on-line access to remotely-sensed data from the U.S. Geological Survey Earth Resources Observation and Science (EROS) Center archive.

Groundwater quality in the Colorado River basins, California, 2012, Fact Sheet 2012-3034 Groundwater quality in the Antelope Valley, California, 2012, Fact Sheet 2012-3033 …

each chapter of the 2012 edition of the u.s. geological survey (usgs) mineral commodity summaries (mcs) includes information on events, trends, and issues for each mineral commodity as well as discussions and tabular presentations on domestic industry structure, government programs, tariffs, 5-year salient statistics, and world production and …

USGS topographic quadrangle maps may be divided into three products: 1. The Historical Topographic Map Collection (HTMC) is the set of scanned images of USGS topographic …

USGS Spectral Library Version 7 Sample Description Kokaly, R.F., Clark, R.N., Swayze, G.A., Livo, K.E., Hoefen, T.M., Pearson, N.C., Wise, R.A., Benzel, W.M., Lowers ...

 · 1. Introduction [2] Ensuring that cities have an adequate supply of water is increasingly important as human populations continue to concentrate in urban areas. Globally, urban populations have increased from 30% in 1950 to over 50% as of 2010 [United Nations (UN), 2012].In the United States, a similar trend has been recorded, as …

Abstract Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 565 billion barrels of conventional oil and 5,606 trillion cubic feet of undiscovered conventional natural gas in …

dolomite, type of limestone, the carbonate fraction of which is dominated by the mineral dolomite, calcium magnesium carbonate [CaMg(CO3)2]. Along with calcite and aragonite, dolomite makes up approximately 2 percent of …

Compiling and Analyzing Condor Tracking Data. Historically, the endangered California condor ranged from southern Canada to northern Mexico, but by the late 1970s, only about 30 birds remained in a small area in southern California. A captive breeding program was established, and condors that were reintroduced to the wild were tracked by radio ...

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 · In 1996, the U.S. Geological Survey (USGS) developed a global topographic elevation model designated as GTOPO30 at a horizontal resolution of 30 arc-seconds for …

At each site, samples of water and sediment from the unsaturated zone (the region below land surface but above the aquifer that is not completely saturated with water), the aquifer, the stream, and the interface of the …

Users, Uses, and Value of Landsat Imagery. Landsat data are an invaluable resource of moderate-resolution satellite imagery available to the public for free through the USGS. These data, available from 1972 through the present, have been used in countless studies, including monitoring land use change, deforestation, glacier recession, sea ice ...

 · SRTM DEM（2012）- SRTM DEM（2012） SRTM DEM data on the Tibetan Plateau (2012) CIAT（）SRTM,SRTM 90。 Reuter et al.（2007）. SRTM …

Four methods for field sampling have been developed to date: (1) collect 15 mL of water, preserve using ethanol and sodium acetate, and freeze immediately (Ficetola and others, 2008; Thomsen and others, 2012), (2) …

 · Globally, urban populations have increased from 30% in 1950 to over 50% as of 2010 [ United Nations (UN), 2012 ]. In the United States, a similar trend has been recorded, as more than 80% of the U.S. population now live in urban areas, compared to 64% in 1950 [ UN, 2012 ].

The U.S. Geological Survey collects groundwater data and conducts studies to monitor hydrologic conditions, better define groundwater resources, and address problems related to water supply, water use, and water quality. In Georgia, water levels were monitored continuously at 181 wells during calendar year 2012, 185 wells during calendar year …

 · A series of groundwater technical procedures documents (GWPDs) has been released by the U.S. Geological Survey, Water-Resources Discipline, for general use by the public. These technical procedures were written in response to the need for standardized technical procedures of many aspects of groundwater science, including site and …

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Tennessee Water Resources Research CenterThe University of Tennessee600 Henley St., Suite 311Knoxville, Tennessee 37996-4134Dr. John S. Schwartz, [email protected]: (865) 974-7721Fax: …

The LP DAAC is located at the USGS Earth Resources Observation and Science (EROS) Center in Sioux Falls, South Dakota. Learn More. Search Data Products . Find information about specific data products and how to download them. Compare and filter through our entire data product catalog using a variety of relevant facets.

1090 South Donahue Drive Auburn, Alabama 36849-5431 Dr. Eve Brantley, Director [email protected] Phone: (334) 844-3927 Fax: (334) 844-4462 Alaska Water and Environmental Research Center University of Alaska …

 · c USGS 2009 reserve base & 2012 reserves (reserve base includes those resources that are currently economic (reserves), marginally economic, and subeconomic). d Total Rare Earth Elements as Oxides. e Total Platinum Group Metals. a. Metals highlighted in red are those with greater tonnages than terrestrial reserves or terrestrial reserve bases.

Repeated measurements of gravity at a network of sites at the land surface can be used to measure changes in the mass of groundwater at the water table. Combined with water-level measurements in nearby wells, the change in groundwater mass can be used to calculate the porosity of an aquifer. The project has established a network of microgravity ...

 · Comparisons of total contained tonnages of 15 metals and two metal groups from those two marine areas are made with the global terrestrial reserves (USGS, 2012) and the global terrestrial reserve base (TRB; USGS, 2009), which includes resources that are. Unique characteristics for recovery of deep-ocean minerals

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Each chapter of the 2012 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral …

This effort involved the identification and delineation of oil and gas well pad scars in southwestern Wyoming using 4-band NAIP imagery acquired in 2009 and 2012. Imagery was used in a customized feature extraction program that provided an initial representation of pad scars, which served as the basis for a manual clean-up and final delineation ...

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 · 1.LandSat：. 1.Landsat：. NASA (Landsat)1972723,8（6）。. Landsat1-4,Landsat-520136。. Landsat-71999415 。. Landsat-82013211,100 ...