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Geographic Information Systems
cover (figs. 3 and 4). Likewise, census or hydrologic tabular data can be converted to a maplike form and serve as layers of thematic information in a GIS (figs. 5 and 6). Figure 1a. U.S. Geological Survey (USGS) digital line graph (DLG) data of roads. Figure 1b. USGS DLG of rivers....
TopoZone
Topographic Maps & Aerial Photos for United States & Canada For full access, login or begin your 14-day free trial. Learn more » TopoZone is now part of Trails.com! TopoZone, the Internet's top destination for topographic maps, is now...
 Smithsonian: Reflections on Earth: Biodiversity and Remote Sensing Teacher Guide
levels. Land cover maps allow scientists to visually analyze the location and extent of different land cover types (see Figure 3). By using such maps to estimate the area and For each group: � copies of blackline masters: Land Cover Grid (transparency) Ground Truth Field...
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levels. Land cover maps allow scientists to visually analyze the location and extent of different land cover types (see Figure 3). By using such maps to estimate the area and For each group: � copies of blackline masters: Land Cover Grid (transparency) Ground Truth Field Data Habitat Information � satellite image � topographic map � blank transparency (or tracing paper) � markers (or colored pencils) Optional: � transparency of Reflected Energy graph MATERIALS Land Cover Mapping TIME REQUIRED: TWO
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http://www.nasm.si.edu/education/pubs/reflecttg.pdf#page=17
www.nasm.si.edu/education/pubs/reflecttg.pdf#page=17
levels. Land cover <span class="highlight">maps</span> allow scientists to visually analyze the location and extent of different land cover types (see Figure 3). By using such <span class="highlight">maps</span> to estimate the area and <span class="highlight">For</span> each group: � copies of blackline masters: Land Cover Grid (transparency) Ground Truth Field Data Habitat Information � satellite image � <span class="highlight">topographic</span> map � blank transparency (or <span class="highlight">tracing</span> paper) � markers (or colored pencils) Optional: � transparency of Reflected Energy graph MATERIALS Land Cover Mapping TIME REQUIRED: TWO
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http://www.nasm.si.edu/education/pubs/reflecttg.pdf#page=20
www.nasm.si.edu/education/pubs/reflecttg.pdf#page=20
transparency over the satellite image and outlining the boundaries of areas that appear different. (<span class="highlight">Tracing</span> paper can be substituted <span class="highlight">for</span> transparencies.) Students should classify the different land cover types. Areas with the same appearance and characteristics should be classified as the same land cover type and coded with same color or symbol. See Figure 5. Land cover can include urban areas, forests, agricultural lands, and water. Using the <span class="highlight">topographic</span> map as a reference, add other features that relate to the land
Topographic Maps
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Principles of Digital Communications I
6.451, is offered in the spring. Topics covered include: digital communications at the block diagram level, data compression, Lempel-Ziv algorithm, scalar and vector quantization, sampling and aliasing, the Nyquist criterion, PAM and QAM modulation, signal constellations, finite-energ...
What is Earthquake Intensity?
Services & Product Information Base Map Contours Elevation Geographic Names Government Unit Boundaries Hydrography Land Cover Map Indices Orthoimagery Public Land Survey System Scanned Topo Maps (Digital Raster Graphics) Shaded Relief Structures Transportation US Topo Using the...
Earthquake Effects
Services & Product Information Base Map Contours Elevation Geographic Names Government Unit Boundaries Hydrography Land Cover Map Indices Orthoimagery Public Land Survey System Scanned Topo Maps (Digital Raster Graphics) Shaded Relief Structures Transportation US Topo Using the...
USGS: Earthquakes Frequently Asked Questions
Services & Product Information Base Map Contours Elevation Geographic Names Government Unit Boundaries Hydrography Land Cover Map Indices Orthoimagery Public Land Survey System Scanned Topo Maps (Digital Raster Graphics) Shaded Relief Structures Transportation US Topo Using the...
Historic Earthquakes Statistics
Services & Product Information Base Map Contours Elevation Geographic Names Government Unit Boundaries Hydrography Land Cover Map Indices Orthoimagery Public Land Survey System Scanned Topo Maps (Digital Raster Graphics) Shaded Relief Structures Transportation US Topo Using the...
Measuring Earthquakes
Services & Product Information Base Map Contours Elevation Geographic Names Government Unit Boundaries Hydrography Land Cover Map Indices Orthoimagery Public Land Survey System Scanned Topo Maps (Digital Raster Graphics) Shaded Relief Structures Transportation US Topo Using the...
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