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The Digital Chart of the World (DCW) is an Environmental Systems Research Institute, Inc. (ESRI) product originally developed for the US Defense Mapping Agency (DMA) using DMA data. The DCW 1993 version at 1:1,000,000 scale was used. The DMA data sources are aeronautical charts, which emphasize landmarks important from flying altitudes. This explains why there is a separate aeronautical theme with all conceivable airports, yet why on some themes small islands and lakes are simply unnamed points. ESRI, in compiling the DCW, also eliminated some detail and made some assumptions for handling tiny polygons and edgematching. Also, note that the completeness of the thematic categories present in each layer will vary....
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Album Caption: Lepidocyclina (Lepidocyclina) waylandvaughani: Eocene and Oligocene larger foraminifera from the Panama Canal Zone and Vicinity, Panama. Published in U.S.Geological Survey Professional paper 244, Plate 18. 1952.
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Lepidocyclina (Pliolepidina) macdonaldi: Eocene and oligocene larger foraminifera from the Panama Canal Zone and Vicinity, Panama. Published in U.S.Geological Survey Professional paper 244, Plate 7. 1952.
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Darien Expedition. Album Caption: Island, Limon Bay or Islands in Cupica Bay. 1871. NARA # 77-H-8913P-5.
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The Digital Chart of the World (DCW) is an Environmental Systems Research Institute, Inc. (ESRI) product originally developed for the US Defense Mapping Agency (DMA) using DMA data. The DCW 1993 version at 1:1,000,000 scale was used. The DMA data sources are aeronautical charts, which emphasize landmarks important from flying altitudes. This explains why there is a separate aeronautical theme with all conceivable airports, yet why on some themes small islands and lakes are simply unnamed points. ESRI, in compiling the DCW, also eliminated some detail and made some assumptions for handling tiny polygons and edgematching. Also, note that the completeness of the thematic categories present in each layer will vary....
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A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. This particular data set is for horizontal spectral response acceleration for 1.0-second period with a 10 percent probability of exceedance in 50 years.


map background search result map search result map Political boundaries of Espirito Santo, Brazil Drainage network of Espirito Santo, Brazil Panama Group of Claims, M.S. 4012, Showing Brusky Claims 1.0-second spectral response acceleration (5% of critical damping) with a 10% probability of exceedance in 50 years Drainage network of Espirito Santo, Brazil Political boundaries of Espirito Santo, Brazil 1.0-second spectral response acceleration (5% of critical damping) with a 10% probability of exceedance in 50 years