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NATIONAL GEOLOGIC MAP DATABASE - HOMEPAGE

NATIONAL GEOLOGIC MAP DATABASE - HOMEPAGE
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Volcanos Slide Silently To Their Death East of Fiji, between Tonga and Samoa, is a feisty, earthquake-prone fault zone called the Tonga Trench that is the second-deepest submarine canyon in the world. Researchers have found that dozens of giant, flat-topped old undersea volcanoes quickly march toward the trench, ultimately taking the final plunge into the abyss. Earthquakes and resulting tsunamis are a concern at the Tonga Trench, just as they are along the Japan Trench and the even deeper Mariana Trench to the south, near Guam. BLOG: Time-Lapse Animation Shows Japan's Earthquakes A whopping 10.9 kilometers deep in some areas, the Tonga Trench marks the boundary where a westward-moving chunk of the earth’s outer crust, the Pacific plate, is forced downward beneath the Indo-Australian plate next door. Geologists long assumed that the destruction of giant volcanoes along these so-called subduction zones might add to the risk of earthquakes there. WIDE ANGLE: Japan in Crisis The ultimate fate of the volcanoes is still unclear.

Nuevo mapa topográfico mundial * Mundialis es un nuevo mapa topográfico que presenta una vista interactiva atractiva del relieve a nivel mundial. El mapa utiliza datos de elevación 450m DEM SRTM y datos batimétricos de mares y lagos (de Natural Earth & NGDC respectivamente). El mapa también incluye la opción de ver una capa de OpenStreetMap en la parte superior del mapa topográfico o como propia base del mapa. El mapa incluye un menú de las capas del mapa lo que nos permite seleccionar el mapa topografico o la base topografica de OpenStreetMap. Podemos leer más acerca de las fuentes de datos utilizadas para mundialis y la información sobre el servicio de mapas web para el cliente web mundialis en este Making of: Capa de Topografía con OSM Overlay artículo.

Global Network for the Forecasting of Earthquakes The International Geodynamic Monitoring System, a part of GNFE (London, UK), has registered on November 15, 2011 a powerful energy release emanating from the Earth’s core. The intense three-dimensional gravitational anomaly was almost simultaneously recorded by all ATROPATENA geophysical stations separated by vast distances from each other in the following cities: Istanbul (Turkey), Kiev (Ukraine), Baku (Azerbaijan), Islamabad (Pakistan) and Yogyakarta (Indonesia). According to GNFE President Professor ElchinKhalilov, the detailed analysis of ATROPATENA station records indicates a powerful energy release emanating from the Earth’s core. According to the scientist, this fact may herald intensification of geodynamic processes in our planet and as a result, a higher number of strong earthquakes, volcanic eruptions and tsunamis. Meanwhile, 15 November 2011 all ATROPATENA stations registered, almost simultaneously,a very powerful gravitational impulse.

12 Maps That Changed the World "All cultures have always believed that the map they valorize is real and true and objective and transparent," Brotton, a professor of Renaissance studies at Queen Mary University of London, told me. "All maps are always subjective.... Even today’s online geospatial applications on all your mobile devices and tablets, be they produced by Google or Apple or whoever, are still to some extent subjective maps." There are, in other words, no perfect maps—just maps that (more-or-less) perfectly capture our understanding of the world at discrete moments in time. 1. Humans have been sketching maps for millennia, but Claudius Ptolemy was the first to use math and geometry to develop a manual for how to map the planet using a rectangle and intersecting lines—one that resurfaced in 13th-century Byzantium and was used until the early 17th century. 2. 3. This map from England's Hereford Cathedral depicts "what the world looked like to medieval Christians," Brotton says. 4. 5. 6. 7. 8. 9. 10. 11.

18 mapas que mudarão a forma como você vê o mundo The true size of the world A mind-bending, interactive map shows the actual sizes of countries nearer the Equator Created by software engineers, Damon Maneice and James Talmage, this interactive map of the world is creating a small storm on social media. The map of the world, as we know it, is disproportionate. Designed by Flemish cartographer Gerardus Mercator in 1569, our world projection shows the latitude and longitude of all the world’s countries but wholly distorts their relative size. In order to make a rectangular map from a sphere, the countries north and south of the Equator have been stretched. Scholars have discussed the map's obvious flaws for centuries, however, it is still the most widely used and recognised depictions of the world. The world according to Google (Image: Google Maps) In 2010, the Royal Geographical Society (with IBG) asked Kai Krause, a renowned software engineer, to produce ‘unusual maps’ for an exhibition. This shows the US against a backdrop of the African continent.

3 herramientas gratuitas para crear mapas geográficos interactivos Cuando los periodistas trabajan con temas de geografía necesitan del apoyo de imágenes y gráficos para que la información quede contextualizada y sea más fácil de entender. Allison McCartney del blog de Visual.ly recogió tres herramientas que permiten la creación de mapas geográficos multimedia: 1. Geocommons Este programa permite a los usuarios subir datos a la plataforma y ubicarlos en un mapa. Geocommons incluye una pequeña variedad de mapas para elegir. 2. También trabaja ubicando datos e imágenes en un mapa de manera automática, pero ofrece personalizar un poco más el gráfico con opciones de color y tamaño. Esta herramienta solo ofrece dos mapas de referencia básicos, uno callejero y otro que es un mapa de terreno. Este programa se descarga de manera gratuita y los trabajos que se reúnen en él pueden ser publicados de manera rápida en la web. “Quantum GIS” permite crear mapas en 3d bastante desarrollados, en donde uno puede insertar mucha información y personalizarla.

32 mapas fascinantes que não te mostraram na escola Quando concluímos o ensino médio, ficamos sabendo que muitas coisas interessantes ficaram por lá, e nunca foram ensinadas. Evidentemente que a maioria das pessoas sabe nomear os principais países da Europa e apontar grandes centros urbanos, mas é raro ter um entendimento total de como funciona o mundo a partir dos mapas. Pensando nisso, reunimos uma lista de mapas pouco convencionais que revelam fatos divertidos e interessantes, que podem ajudá-lo a tirar suas próprias conclusões. Confira: 1 – Frequência de ruivos na Europa 2 – Esportes mais populares do mundo 3 – Mapa politico da Pangea, o supercontinente que existiu entre 200 e 300 milhões de anos atrás. 4 – Navegadores mais usados (2012) 5 – Países que não usam o sistema métrico 6 – Tamanho médio do pênis 7 – Sobrenomes mais comuns na Europa 8 – Países que melhor e pior recebem estrangeiros 9 – Mapa de QI 10 – Liberdade de imprensa 11 – Bebidas alcoólicas mais consumidas 12 – Mapa invertendo terra e água 13 – Orientação de direção

Africa on the world map: What's the real size? Home to six time zones, its endless plains spread from ocean to ocean, dominating great swathes of the northern half of the globe. But, in reality, three Canadas would comfortably fit inside Africa. Our world map is wildly misleading. It's all down to the European cartographer Geert de Kremer, better known as Mercator, and his 16th century map projection. While a convenient way to chart the world, the map distorts the true size of countries. "Somehow this map projection came to be used on most world maps, especially those produced for classrooms since the beginning of the 1900s," says Menno-Jan Kraak, president of the International Cartographic Association and professor of cartography at the University of Twente, Netherlands. "Most of us have grown up with this world image." Made for captains Mercator initially made globes. Mercator's solution was to stretch out the northern and southern extremities of the globe to fill those gaps, producing an elegant and usable map. A political tool?

Views of the World - worldmapping beyond mere description Cartographic Images Home Page This site is sponsored by Henry Davis Consulting as an educational service. Web hosting provided and sponsored by Phoenix.Volant. Please visit our sponsors. A new and improved version of this web site has been established at the following URL: Click here to see an Index of 94 cartographic images, with links to JPEG format, low resolution images and associated descriptions of maps dating from Click here to see an Index of 195 cartographic images, Click here to see an Index of 264 cartographic images, with links to JPEG, format low resolution images Click here to see an Index of 433 cartographic images, for additional information and background behind this project, see a copy of my article that was published in The Map Collector magazine (Number 74, Spring 1996) If you have any questions you can contact me by e-mail at: Here are some other great Web Sites that deal with cartography: Oddens's Bookmarks (a very comprehensive Web Site on cartographic topics) and

ATLAS HISTORIQUE - Cartographie & histoire The Collection Portulanos

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