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Showing 1 to 20 of 27 for “"Landsat 7"”.
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Delineation of mass movement prone areas by Landsat 7 and digitial image processing
The problem of whether Landsat 7 data could be used to delineate areas prone to mass movement, particularly debris flows and landslides, was examined using three techniques: change detection in NDVI (Normalized Difference Vegetation Index), change detection in band 5, and the tasseled cap …
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Development of a Composite Model of Quality of Life: A Case Study in Austin, Texas
… quality variables were derived from Landsat 7 ETM+ imageries. A factor analysis approach was used to indicate how variables relate to each other as well as QOL for the study area. Using the percentage of variance for each variable as a weight, a synthesized index was developed to …
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Creation of a Continuous Ozone Dataset from 1972 Onwards and its Effect on Remote Sensing
… is 5.79%. The change in transmittance of Landsat 7 band 2 due to the interpolated data is less than 0.15% for a spatial gap of 32 latitude x 40 longitude. In case of a temporal gap of 1 month, the change in transmittance of Landsat 7 band 2 is less than 0.4%. Finally, the change in the …
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Development of a multispectral albedometer and deployment on an unmanned aircraft for evaluating satellite retrieved surface reflectance over Nevada's Black Rock Desert
… Land Satellite 7Enhanced Thematic Mapper Plus (Landsat-7 ETM+). The instrument was deployed onOctober 5th, 2017 under clear skies over Nevada's Black Rock Desert to investigate aregion of known high surface reflectance. It was found that satellite retrieved surfacereflectance underestimated …
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Determining Heat Island Response to Varying Land Cover Changes Between 2004 and 2017 Within the City of Reno, Nevada
… Free and widely available thermal data from Landsat 7 ETM+ (Enhanced Thematic Mapper Plus) sensor was gathered for a period between 2004 and 2017 and processed to at-satellite surface temperature. Using parcel data and the National Land Cover Database, the time series of Landsat data was …
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Glacial Geomorphology of southern Alberta, Canada
… Shuttle Radar Topography Mission (SRTM) and Landsat 7 Enhanced Thematic Mapper (Landsat ETM+) data sets were used to map the regional picture. Then, Aerial Photo Investigation (API), ground truthing and sedimentary analyses were employed to provide a detailed, localised focus into the …
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QUANTIFYING CURRENT SOIL BRINE CONTAMINATION WITHIN THE SMACKOVER OIL FIELD IN ARKANSAS USING MULTISPECTRAL DIGITAL IMAGERY
… landscape scarring across the study area.</p> <p>Landsat 9 multispectral digital imagery was utilized to create supervised classification maps based on earthen pits and creek scarring across the Smackover Oil Field. The results from these maps were compared to a previously completed brine …
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Spatial Distribution of Suspended Sediments within the Chesapeake Bay Using Remote Sensing
… remote sensing study used Visual Data 8.2 and Landsat 7 satellite images to detect and evaluate the spatial distribution of sediment within the water column through the creation of natural and false color composites and image ratios. In the natural color composite, browner shades of suspended …
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Analysis of changes in the surface area of the reservoirs supplying the Attica Basin using satellite images
… από δυο διαφορετικούς δορυφόρους, τον Landsat 7 για την περίοδο 2000 έως 2015 και τον Sentinel 2 για την περίοδο 2016 έως 2025. Για την επεξεργασία των δορυφορικών εικόνων χρησιμοποιήθηκαν δυο προγράμματα: το QGIS 3.44.4 και το SNAP. Με την ολοκλήρωση της επεξεργασίας των εικόνων και …
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REMOTELY MAPPING SURFACE ROUGHNESS ON ALLUVIAL FANS: AN APPROACH FOR UNDERSTANDING DEPOSITIONAL PROCESSES
… radiation-scattering effects of a surface. Using Landsat 7 satellite imagery, the changes in observed surface reflectance, resulting from seasonal changes in the angle of incoming, solar radiation, can be classified and interpreted to show differences in surface roughness. Observations of grain …
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Uso do solo e pressão antrópica no Parque Estadual Serra do Rola-Moça, Belo Horizonte MG
… e de seu entorno, obtidas pelos sensores TM/LANDSAT 5, em 1989, ETM/LANDSAT 7, em 2002, e pelo satélite IKONOS, em 2004, a partir das quais foram gerados mapas da ocupação urbana no entorno do Parque, para os anos de 1989 e 2002, e de uso e cobertura do solo do Parque, em 2004. Chegou-se a um …
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Assessing the spatiotemporal variation of phytoplankton biomass in Nandoni reservoir in the Vhembe District (South Africa) using LANDSAT satellite imagery
… and chl–a concentration using readily available Landsat multispectral images. Multispectral resolution of (30 m) Landsat 7 ETM+ and Landsat 8 OLI images for June to December 2008 to 2020 were used to derive the distribution of chl–a concentration. The spatial distribution of chl–a concentration …
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Spectral Identification of Wild Rice (Zizania palustris L.) Using Indigenous Knowledge and Landsat Multispectral Data
Landsat-7 ETM+ (SLC-off) multispectral satellite imagery was tested to identify and delineate natural stands of wild rice (Zizania palustris L.) from other aquatic vegetation growing on area lakes of the Leech Lake Native American reservation in northern Minnesota. Leech Lake is located within the …
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Spectral Identification of Wild Rice (Zizania palustris L.) Using Indigenous Knowledge and Landsat Multispectral Data
Landsat-7 ETM+ (SLC-off) multispectral satellite imagery was tested to identify and delineate natural stands of wild rice (Zizania palustris L.) from other aquatic vegetation growing on area lakes of the Leech Lake Native American reservation in northern Minnesota. Leech Lake is located within the …
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Using satellite remote sensing to model and map the distribution of Bicknell's thrush (Catharus bicknelli) in the White Mountains of New Hampshire
<p>Landsat-7 Enhanced Thematic Mapper satellite imagery was used to model Bicknell's Thrush (Catharus bicknelli) distribution in the White Mountains of New Hampshire. The proof-of-concept was established for using satellite imagery in species-habitat modeling, where for the first time imagery …
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Reflectance-based Calibration and Validation of the Landsat Satellite Archive
… project was to consistently calibrate the entire Landsat series to a common reflectance scale by performing cross-calibration corrections from Landsat-8 OLI to Landsat- 1 MSS. A consistent radiance-based calibration was already performed from Landsat-8 OLI through Landsat-1 MSS using bright …
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Remotely Sensed Estimates of Evapotranspiration in Agricultural Areas of Northwestern Nevada: Drought, Reliance, and Water Transfers
… of evapotranspiration (ET) were derived from Landsat multispectral optical and thermal imagery over a eleven-year period (2001 to 2011) and compared to variations in weather, water supply, and land use across four hydrographic areas in northwestern Nevada. Monthly ET was estimated using a land …
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Modélisation de l'érosion hydrique en milieu semi-aride de forte énergie de relief à partir de données de télédétection application à la Bolivie
… on multisource satellite images (RADARSAT-1, Landsat-7 and SPOT-4). We replaced the geomorphological graphic models used by Lamachère and Guillet with a topographic vulnerability map originating from the MVT (topographic vulnerability model). This, in turn, was derived from a DEM. Several …
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Use of remote sensing to estimate soil salinity and evapotranspiration in agricultural fields
… Ikonos image from July 27, 2001 and a Landsat 7 image from July 8, 2001. While the Ikonos image provides more details, the results of this study indicate that the Landsat imagery also performed remarkably well. Evapotranspiration (ET) is one of the processes that are affected by soil …
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Predictive Modeling of Sugarbeet Quality Using Vegetative Index, Statistical, and Artificial Neural Network Methods
… data. The data consisted of five years of Landsat 5 and Landsat 7 Thematic Mapper (TM) multispectral images, and field production data sets from 2003 to 2007. Fields were planted to the Beta and Hilleshog sugarbeet varieties within the Southern Minnesota Beet Sugar Cooperative's (SMBSC) …
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