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.
GIS Tools for Hadoop by Esri Looking at data without location, most of the time seems like looking at just part of a story. Including location and geography in analysis reveals patterns and associations that otherwise are missed. As Big Data emerges as a new frontier for analysis, including location in Big Data is becoming significantly important. Data that includes location, and that is enhanced with geographic information in a structured form, is often referred to as Spatial Data. GIS Tools for Hadoop is an open source toolkit intended for Big Spatial Data Analytics. Esri Geometry API for Java: A generic geometry library, can be used to extend Hadoop core with vector geometry types and operations, and enables developers to build MapReduce applications for spatial data.Spatial Framework for Hadoop: Extends Hive and is based on the Esri Geometry API, to enable Hive Query Language users to leverage a set of analytical functions and geometry types. Getting started How it all works?
DOGAMI | Lidar Data Viewer - Introduction Interactive map upgrades begin Friday, April 11 The Lidar Data Viewer is undergoing a maintenance update and data layers may not appear. The viewer will return to normal service as soon as possible. Thank you for your patience during these improvements. Until the viewer is back, users can view DOGAMI lidar as a base map option on Oregon HazVu and SLIDO interactive maps. What is the DOGAMI Lidar Data Viewer? This interactive map allows you to view lidar data shaded-relief imagery for Oregon at zoom scales to 1:9,028. Use the "Lidar Quad Search/Purchase" tool on the map to locate and order Lidar Data Quadrangle (LDQ) publications.* Locate LDQs by: Ohio Grid Code USGS topographic quadrangle name *Lidar Data Quadrangles (LDQs) can be purchased through Nature of the Northwest Information Center. What do I need to use the map viewer? To view the map, your browser must have Adobe Flash Player and must allow cookies. Map Tool Help Limitations Additional Resources Lidar Landscapes posters | postcards
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.
OpenStreetMap US DOGAMI - Lidar Landscapes Posters: Umpqua Lighthouse State Park; Honeyman State Park; Netarts Bay; Willamette River Historic Channels; Big Obsidian Flow, Newberry Crater; Mt. Hood and the Parkdale Lava Flow $10 each, from Nature of the Northwest | 2012 Calendar | Postcards Each artistic rendering was created using a lidar bare-earth raster image draped with an orthophoto. Umpqua Lighthouse State Park, Oregon, 18 x 24 inches, by Daniel Coe, $10. Order poster Honeyman State Park, Oregon, 24 x 18 inches, by Daniel Coe, $10. Order poster Netarts Bay, Oregon, 24 x 18 inches, by Daniel Coe, $10. Willamette River Historic Channels, North of Corvallis, Oregon, 24 x 18 inches, by Daniel Coe, $10. Big Obsidian Flow and Other Major Lava Flows, Newberry Crater, Oregon, 24 x 18 inches, by Daniel Coe, $10. Mount Hood and the Parkdale Lava Flow, Oregon, 24 x 18 inches, by Daniel Coe, $10.
ArcGIS Desktop This topic provides a set of links to a collection of various ArcGIS tutorials used to perform a number of common tasks in ArcGIS. Find the tutorial that you would like to work through by clicking the links in the tables below. To work through the ArcGIS Desktop tutorials, you need to install the tutorial data from the ArcGIS Desktop Tutorial Data setup, which is part of the ArcGIS Desktop installation download or media. If the tutorial data has been installed on your system, look for it in C:\arcgis\ArcTutor (the default installation location). The ArcGIS Server Installation does not include tutorial data. Keep in mind that these tutorials are only a starting point for you to learn about ArcGIS. ArcGIS Desktop application tutorials ArcGIS Desktop extension tutorials ArcGIS Server tutorials
Maps & Map Postcards Title:Old Man Alaska Alaska (AK), Linen unused Description: Area - 590,000 square miles; coast line - 26,000 miles; discovered by Russia - 1741; bought by US - 1867; Yukon River - 2000 miles; Mt. McKinley - 20,300 feet; purchase price - $7,200,000; est. minerals - $700,500,000; Statistics for Jan. 1937: Fur, Fox, Mink, Etc - $2,513,243; Silver - $217,201; gold - $16,653,379; copper - $2,488,703; salmon - $48,173,176; total fish value - $51,971,206; commerce $115,963,586; reindeer, est. number - 750,000; airplanes - 90; airplane miles - 2,130,929; passengers carried - 16,982 Title:Map of Shenandoah Valley of VirginiaLinen Historical Magnetic Declination | ngdc.noaa.gov Magnetic declination is an important concept for accurate navigation. A compass will always point along the lines of magnetic force (which converge on what are called the magnetic poles). The angle between the direction of force and the direction of the geographic north pole is called the declination. If a compass at your location is pointing to the right of true north, declination is positive or east, and if it points to the left of true north, declination is negative or west. As the earth's magnetic field varies over time, the positions of the north and south magnetic poles gradually change. This map displays historical isogonic lines and magnetic poles calculated for the years 1590-2020. Years 1590-1890: calculated from the gUFM model Years 1900-2020: calculated from the IGRF Years 1890-1900: a smooth transition was imposed between models More information about geomagnetism at NCEI More information about magnetic poles and polar wander at NCEI Instructions for using the map:
USGS Topographic Maps Update 11/28/2011 Seamless Topo Maps - I have released a seamless version (without the map borders) version of the USGS Topographic Map layer for Google Earth. In addition to removing the map borders, hill shading has been added using the 10-meter National Elevation Dataset (NED), which greatly enhances the topography and makes it possible to “see” the 3D effects when using Google Earth in off-line mode. Given the amount of time required to create this layer, and the server resources required, I will be charging a small fee to download the seamless maps. Making the maps available for download allows me to make them available at a higher resolution than I would be able to otherwise. See the Seamless Topographic Maps for Google Earth page for more information. USGS Topographic maps provide detailed information such as land use, feature names, the locations of natural features, and topographic elevation contours. The maps in this collection typically date from around 1978 to 2005.
Maps and Data Oregon/Washington BLM Welcome to the Maps and Data page. We hope you will take the time to explore it. The page contains links to maps, Cadastral Survey, and Land Records. We provide leadership, management, and technical direction for the development and implementation of the BLM Oregon and Washington’s surveying, mapping, aerial photography, geodesy, resource grade global positioning system (GPS) activities. If you can't find what you're looking for on this site, feel free to contact us at 503-808-6132, or via e-mail. The Bureau of Land Management's Oregon/Washington (OR/WA) Data Library contains the spatial data of the Oregon and Washington BLM. Maps The Cartography Team is part of Mapping Sciences in Oregon/Washington BLM, which also includes remote sensing, and photogrammetry. Remote Sensing Remote Sensing is the science of observing and measuring from remote locations. BLM currently acquires imagery in several forms - printed stereo photography or digital imagery in natural color or color infrared.
Oregon Maps - State County City Coast Road Map Oregon Coastal Atlas - Oregon Coastal Zone management information. Willamette Explorer - Land and water use issues for the Willamette Valley. North Coast Explorer - North Coast wildlife resource management information, charts, reports, photos, and videos from OSU (Oregon State University). Umpqua Explorer - Umpqua Basin watershed and resource information (OSU). Oregon Geologic Data Compilation Mapserver - digitally compiled geologic data for the entire state. The Bare Earth For geologists, lidar is an invaluable tool that enables them to see and study large areas of the earth's surface, particularly in places where trees and vegetation obscure the landscape. Lidar (light detection and ranging) is a technology that uses light pulses to collect three-dimensional information. Lidar data is often collected from an airplane using a laser system pointed at the ground. The system measures the amount of time it takes for the laser light pulses to reach the ground and return. Billions of these rapidly-collected measurements (points) can create extremely detailed three-dimensional models of the Earth's surface. See the diagram below to better understand how airborne lidar is collected. Geologists in Washington State use different bare-earth lidar products to map geology, landslides, and faults, to study volcanoes, glaciers and rivers, and to model tsunami inundation.
Introduction to the Land Cover Viewer << Back to Land Cover Two Biogeographic Analysis Packages provide information derived from the dataset. The user can select an Ecoregion and get summaries of the land cover composition or they can explore individual sites (pixels) within the land cover to see what land cover type has been mapped there. The GAP/LANDFIRE National Terrestrial Ecosystems data layer provides detailed information about the vegetation of the United States. The Alaska and Continental U.S. portion of the data set contains 680 Ecological systems and 28 land use, introduced vegetation, or disturbed classes. Frequently, this high number of classes provides a level of detail that exceeds a user’s needs. Features used to delineate National Vegetation Classification (NVC) levels: Class dominant general growth forms adapted to basic moisture, temperature, and/or substrate or aquatic Subclass Formation global macroclimatic conditions as modified by altitude, seasonality of precipitation, substrates, hydrological conditions