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Integrated Land Change Monitoring

Satellite images that have been continuously acquired for many decades represent a unique record of our planet’s surface. At EROS, we analyze satellite and other data to determine not only how the Earth’s land cover has changed over time, but also the driving forces behind the changes. Understanding the how and why of past land cover and land use change makes it possible to more accura

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USGS EROS Archive - LCMAP- Continuous Change Detection Classification v1.2 (CCDC) Products (U.S.)

The Land Change Monitoring, Assessment and Projection (LCMAP) project has generated an integrated suite of annual land cover and land surface change products for the United States based on time series data from the Landsat record from 1985–2020. LCMAP Collection 1.2 Science Products are based on the USGS implementation of the Continuous Change Detection and Classification (CCDC) algorithm.
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USGS EROS Archive - LCMAP- Continuous Change Detection Classification v1.2 (CCDC) Products (U.S.)

The Land Change Monitoring, Assessment and Projection (LCMAP) project has generated an integrated suite of annual land cover and land surface change products for the United States based on time series data from the Landsat record from 1985–2020. LCMAP Collection 1.2 Science Products are based on the USGS implementation of the Continuous Change Detection and Classification (CCDC) algorithm.
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Alaska North Slope LiDAR

High-resolution light detection and ranging (lidar) elevation data were acquired along the north coast of Alaska between 2009 and 2012. The lidar acquisition, from Icy Cape, Alaska to the United States/Canadian border, comprised approximately 11,000 km2. The airborne lidar data were acquired in support of the U.S. Geological Survey Coastal and Marine Geology Program. The purpose of this lidar...
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Alaska North Slope LiDAR

High-resolution light detection and ranging (lidar) elevation data were acquired along the north coast of Alaska between 2009 and 2012. The lidar acquisition, from Icy Cape, Alaska to the United States/Canadian border, comprised approximately 11,000 km2. The airborne lidar data were acquired in support of the U.S. Geological Survey Coastal and Marine Geology Program. The purpose of this lidar...
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3D Topobathymetric Digital Elevation Model for Lake Powell Storage Capacity Assessment

To support the modeling of the Colorado River water storage area capacity tables by the U.S. Geological Survey (USGS) Utah Water Science Center, the USGS Earth Resources Observation and Science (EROS) Center created a 3D high-resolution topobathymetric digital elevation model (TBDEM) for Lake Powell. Located in south-central Utah and north-central Arizona, the second largest man-made reservoir in...
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3D Topobathymetric Digital Elevation Model for Lake Powell Storage Capacity Assessment

To support the modeling of the Colorado River water storage area capacity tables by the U.S. Geological Survey (USGS) Utah Water Science Center, the USGS Earth Resources Observation and Science (EROS) Center created a 3D high-resolution topobathymetric digital elevation model (TBDEM) for Lake Powell. Located in south-central Utah and north-central Arizona, the second largest man-made reservoir in...
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LCMAP Change Stories: Building a Boomtown, Block by Block

The desert outpost of Palm Springs, California and the surrounding Thousand Palms region has experienced explosive population growth over the past four decades, with tract after tract of development filling in previously barren landscapes along Interstate 10.
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LCMAP Change Stories: Building a Boomtown, Block by Block

The desert outpost of Palm Springs, California and the surrounding Thousand Palms region has experienced explosive population growth over the past four decades, with tract after tract of development filling in previously barren landscapes along Interstate 10.
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LCMAP Change Stories: Gone in 60 Seconds

At first glance, the most striking patterns in land cover change over time in this animation of the Oso, Washington area would appear to be forest harvest and regrowth, but a more dramatic change emerged in 2014.
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LCMAP Change Stories: Gone in 60 Seconds

At first glance, the most striking patterns in land cover change over time in this animation of the Oso, Washington area would appear to be forest harvest and regrowth, but a more dramatic change emerged in 2014.
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LCMAP Change Stories: It's a Sprawl World After All

The man-made Florida playland of Walt Disney World has grown outward on all sides since the amusement park’s construction commenced in the 1960s. Much of that growth has overtaken the wetlands, tree cover and grassland/shrublands near Orlando.
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LCMAP Change Stories: It's a Sprawl World After All

The man-made Florida playland of Walt Disney World has grown outward on all sides since the amusement park’s construction commenced in the 1960s. Much of that growth has overtaken the wetlands, tree cover and grassland/shrublands near Orlando.
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Ranking Features Based on Magnitude of Change

Each of the polygons in the topographic change inventory has numerous attributes associated with it. These attributes allow a ranking of features based on the magnitude of change, as measured by polygon descriptors (area and volume) and changes in terrain parameters (elevation, relief, slope, aspect). The ability to do such a ranking points out one of the advantages of producing spatially explicit...
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Ranking Features Based on Magnitude of Change

Each of the polygons in the topographic change inventory has numerous attributes associated with it. These attributes allow a ranking of features based on the magnitude of change, as measured by polygon descriptors (area and volume) and changes in terrain parameters (elevation, relief, slope, aspect). The ability to do such a ranking points out one of the advantages of producing spatially explicit...
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Quadrangle Base Maps

Many resource managers and geospatial data users are familiar with the USGS 7.5-minute quadrangle map series. Also, much of the geospatial data managed by the USGS was originally produced in tiles corresponding to the 7.5-minute maps. The topographic map quadrangles are still commonly used as base maps for outlining data collection strategies and defining project boundaries. Thus, it is useful to...
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Quadrangle Base Maps

Many resource managers and geospatial data users are familiar with the USGS 7.5-minute quadrangle map series. Also, much of the geospatial data managed by the USGS was originally produced in tiles corresponding to the 7.5-minute maps. The topographic map quadrangles are still commonly used as base maps for outlining data collection strategies and defining project boundaries. Thus, it is useful to...
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1x1-Degree Tiles

Summary statistics were also accumulated on the basis of the 1x1-degree tiles used for data management and processing. A total of 500 tiles contain topographic change polygons (see figure below), which represents over 53 percent of the conterminous United States tiles.
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1x1-Degree Tiles

Summary statistics were also accumulated on the basis of the 1x1-degree tiles used for data management and processing. A total of 500 tiles contain topographic change polygons (see figure below), which represents over 53 percent of the conterminous United States tiles.
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Regional Geography of Topographic Surface Changes

The spatial distribution of the topographic change polygons across the conterminous United States reveals some notable regional differences and patterns of change. Overall, there is a decided concentration of change polygons in the eastern United States, which can be partially explained by the greater population density as compared to the west.
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Regional Geography of Topographic Surface Changes

The spatial distribution of the topographic change polygons across the conterminous United States reveals some notable regional differences and patterns of change. Overall, there is a decided concentration of change polygons in the eastern United States, which can be partially explained by the greater population density as compared to the west.
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Proximity of Topographic Change Areas to Other Features

The near-national extent of the topographic change dataset also allows for spatial comparisons, such as proximity of change polygons to roads and urban areas. Such comparisons have been done for the proximity of mines to roads and major cities for the five focus ecoregions. This figure shows the locations of the centroids of mining polygons within the five ecoregions and the locations of cities...
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Proximity of Topographic Change Areas to Other Features

The near-national extent of the topographic change dataset also allows for spatial comparisons, such as proximity of change polygons to roads and urban areas. Such comparisons have been done for the proximity of mines to roads and major cities for the five focus ecoregions. This figure shows the locations of the centroids of mining polygons within the five ecoregions and the locations of cities...
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Regional Differences in the Effects of Surface Mining

Because the topographic change inventory has near-national coverage, comparisons can be made among broad regions. This figure shows a set of five Level III ecoregions that were used as a basis for regional comparisons of topographic change.
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Regional Differences in the Effects of Surface Mining

Because the topographic change inventory has near-national coverage, comparisons can be made among broad regions. This figure shows a set of five Level III ecoregions that were used as a basis for regional comparisons of topographic change.
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