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 · 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.

 · 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 …

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.

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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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 ...

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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) …

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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 …

 · Tungsten, as a strategical rare metal, is one of these critical raw materials. It is an essential component in a wide range of products for many end uses (Lassner and Schubert, 1999, Trasorras et al., 2016, BGS, 2011a, Gunn, 2014).Particularly, the use of tungsten in hard metals represents its most important application.

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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 ...

 · 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

USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Jump to Navigation Significant Earthquakes - 2012. Enter a year from 1900 to 2022 Search. What makes an earthquake "significant"? Fetching list of earthquakes. If this ...

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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 commodity as well as discussions and tabular presentations on domestic industry structure, government programs, tariffs, 5-year salient statistics, and world production and …

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

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 …

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 …

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 …

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 …

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 ...

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.

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 …