Filters: Tags: Satellite imagery (X)37 results (131ms)
We produced a time series of maps of habitat structure within wetlands of the Central Valley of California. The structure of open water and tall emergent vegetation, such as Typha spp. and Schoenoplectus spp., is critical for migratory birds. Through field observation and digitization of high resolution imagery we identified the locations of tall emergent vegetation, water, and other land cover. Using a random forest classification, we classified multispectral Landsat 8 imagery 2013-2017. We used images from the fall when most wetlands are flooded and the summer to separate trees and tall emergent vegetation. The final maps show the distribution and extent of tall emergent vegetation within wetlands. Final time...
Categories: Publication; Types: Citation; Tags: Databases, Deltas, Flooding, Floods and flooding, Hydrological Regime,
Comparison of remote sensing data sources and techniques for identifying and classifying alien invasive vegetation in riparian zones
Categories: Publication; Types: Citation; Tags: Aerial Photography, Aquatic plants, Catchment Areas, Catchment area, Catchments,
Oil Spill in Gulf of Mexico April 27-April 30th 2010, digitized from NASA released image.
Tags: disturbance, energy & mining, gulf of mexico, oil spill, pollution,
Analysis of relationships among climate forcing and time-integrated NDVI of grasslands over the U.S. northern and central Great Plains
Maximum glacial extent of the named glaciers in Glacier National Park during the peak of the Little Ice Age
These polygon features represent the maximum extent of the 37 named glaciers in Glacier National Park and two glaciers on U.S. Forest Service’s Flathead National Forest land during the peak of the Little Ice Age (mid-nineteenth century). Glacial margins are based on moraine deposits that result from active glaciation, and do not depict perennial snow and ice. Moraines were digitized based on WorldView imagery acquired on the following dates: 20141019, 20150822, 20150912, 20150925, 20160821, 20160915 (World View 01 and World View 03 satellites). High resolution imagery was supplemented with oblique aerial photographs flown in 2009 and 2016, historic photographs from the USGS photograph collection, and field notes...
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CCME-glacier, Flathead National Forest, Glacier National Park, Montana, aerial imagery,
2015_Glacier margins derived from 2015 satellite imagery for the named glaciers of Glacier National Park, MT and environs
These polygon features represent digitization of the glacier margins for the 37 named glaciers of Glacier National Park (GNP) and two glaciers on U.S. Forest Service’s Flathead National Forest land, derived from 2015 satellite imagery. The polygons represent only the main body portion of each glacier as it appeared in 2015 satellite imagery. Disconnected patches are not included as this dataset represents only the main body features of the named glaciers in GNP and environs. Polygons were digitized from WorldView imagery acquired on the following source dates: 20150822, 20150912, 20150915, 20150925 (World View 01 satellite). Initial digitization was completed by Melissa Brett, PSU graduate student. This set of polygons...
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 2015, CCME-glacier, Flathead National Forest, Glacier National Park, Montana,
This layer depicts the status, or degree of disturbance, to plant communities on the main Hawaiian Islands. Several layers were uset to create this version (v 3.4). The original HabQual layer was developed by Jon Price and Jim Jacobi based on the mapped land cover units from the Hawaii GAP analysis program (Gon et al. 2006). This map was revised by combining data on land use and the “Bare” category from the NOAA C-CAP 2005 map (NOAA National Ocean Service Coastal Services Center 2012), and adding road corridors to the heavily disturbed category based on the Tiger Roads layer (United States Census Bureau 2014). Additionally, corrections were made to this version of the map by visually inspecting previously mapped...
Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Hawaii Island, Hawaiian Islands, Kahoolawe, Kauai, Lanai,
Categories: Publication; Types: Citation; Tags: Catchment areas, Elevation, Evapotranspiration, Hydrologic Models, Mapping,
Multi-season satellite imagery (Landsat ETM+) from 1999-2001 were used in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform, aspect, etc.) to model natural and semi-natural vegetation. Landcover classes are drawn from NatureServe's Ecological System concept, with 109 of the 125 total classes mapped at the system level. For the majority of classes, a decision tree classifier was used to discriminate landcover types, while a minority of classes (e.g. urban classes, sand dunes, burn scars, etc.) were mapped using other techniques. Twenty mapping areas, each characterized by similar ecological and spectral characteristics, were modeled independently of one another. These mapping...
Categories: Web Site; Tags: data, data downloading (usgs), digital elevation models, landcover, mapping,
Mutual effects of the climate change and the alpine snow cover and their influence on the runoff regime evaluated with the aid of satellite remote sensing
Categories: Publication; Types: Citation; Tags: Albedo, Climate change, Data processing, Database systems, EE 731.1 Control Systems; EE 443.1 Atmospheric Properties; E,
PELCOM Project: A 1-km pan-European land cover database for environmental monitoring and use in meteorological models
Land Cover Classification System for the Lower Delta of the Parana River (Argentina): Its Relationship with Landsat Thematic Mapper Spectral Classes
Categories: Publication; Types: Citation; Tags: Aerial Photography, Argentina, Argentina, Argentina, Buenos Aires, Parana Delta, Classification,
Categories: Publication; Types: Citation; Tags: Correlation, Correlation Analysis, Data Acquisition, Enforcement, Hydrologic Data,
Landsat -1 image showing the Mississippi and Ohio Rivers and their junction. Kentucky and Barkley lakes visible at right. Ilinois, Kentucky and Missouri. 1972.
Landsat -1 image showing the Mississippi and Ohio Rivers and their junction. Kentucky and Barkley lakes visible at right: (Landsat image 1124-16061, band 7) Illinois, Kentucky and Missouri. November 24, 1972. Photograph on page 50, Images of the U.S. Geological Survey, 1879-1979.
Categories: Image; Tags: photo print, satellite imagery
This Satellite Image covers the McMurdo Dry Valleys as well as portions of the Royal Society and Convoy Ranges of Antarctica. Two Digital Elevation Models were created to match the image coverage. They have 30 and 100-meter post spacing.
Categories: Image; Tags: Antarctica, McMurdo Dry Valleys, U.S. Antarctic Resource Center, satellite imagery
Categories: Publication; Types: Citation; Tags: AN, Atlantic, Flood Forecasting, Flood control, Hurricanes, Instrumentation,
Categories: Publication; Types: Citation; Tags: Hydrology, Melt waters, Remote Sensing, Runoff, SW 0810 General; SW 5040 Data acquisition; AQ 00001 Water Re,