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Showing 1 to 20 of 61 for “"impervious surfaces"”.
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Impervious Surfaces Mapping Using High Resolution Satellite Imagery
In recent years, impervious surfaces have emerged not only as an indicator of the degree of urbanization, but also as an indicator of environmental quality. As impervious surface area increases, storm water runoff increases in velocity, quantity, temperature and pollution load. Any of these …
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An object-based image analysis approach for detecting urban impervious surfaces
Impervious surfaces are manmade surfaces which are highly resistant to infiltration of water. Previous attempts to classify impervious surfaces from high spatial resolution imagery with pixel-based techniques have proven to be unsuitable for automated classification because of its high spectral …
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A GIS and Remote Sensing Based Analysis of Impervious Surface Influences on Bald Eagle (Haliaeetus leucocephalus) Nest Presence in the Virginia Portion of the Chesapeake Bay
… and land type, distance to land type and impervious surface cover area. Data plots revealed bald eagle nest presence decreases in response to an increase in area of bareland; increases with an increase in area of forested land; decreases with an increase in distance (m) to shoreline, and …
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Using Open Space Design and Water Harvesting as a Strategy to Bring Hydrological and Social Benefits to Dense Cities
… of high-density populations and large number of impervious surfaces. The high percentages of impervious surfaces like rooftops, roads and parking lots in dense cities would block the natural hydrological infiltration process and increasing flooding threats. The goal of this study is finding …
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Changes in Stormwater Thermal Loads Due to Bioretention Cells
… Urban development and the increase in impervious surfaces alter the hydrologic cycle in urban watersheds, limiting infiltration and increasing surface runoff. Impervious surfaces absorb and store solar radiation, resulting in higher surfaces temperatures, and then transfer this thermal …
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Designing for Water Quality
… outlines methods for maximizing permeable surfaces by providing examples of ways to minimize impervious surfaces.
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Mapping urban growth and investigating its potential impact on surface water quality in Chattanooga, Tennessee using GIS and remote sensing
… the conversion of land cover from pervious to impervious surfaces. Impervious surfaces (IS) can have ramifications for urban stormwater and facilitate the movement of pollutants and other substances to nearby water bodies. This study investigated the changes in IS in and around the city of …
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Stormwater and organic matter in the urban stream continuum
… States.</p><p>We determined the role of impervious infrastructure as a proximate source of</p><p>DOM to stormwater by a) constructing an annual carbon budget for the roof of a</p><p>house as a small catchment nested within the 60 h catchment of an urban headwater</p><p>stream and b) …
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Nutrient Dynamics in Stormwater Runoff from Green Roofs with Varying Substrate
… of stormwater runoff from large expanses of impervious surfaces. These impervious surfaces reduce the ability of stormwater to infiltrate into the soil and eventually groundwater, which leads to greater amounts of surface runoff. Green technology serves as a viable solution to many of the …
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Understanding urban assets : using remote sensing to manage stormwater run-off
… data acquired from these satellites to identify impervious surface coverage. Having a better understanding of impervious surfaces, which is directly correlated to volume of stormwater run-off, could help suburban communities manage their stormwater. Quantified impervious surfaces can be used in …
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Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
Impervious cover continues to pose a threat to flood-prone regions, especially the ones in dense urban areas. Mapping the location of impervious surface becomes vital to properly managing drainage and runoff in a city, along with the health of fluvial ecosystems. Kotarba and Aleksandrowicz, in …
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Land Cover and Impervious Surface Mapping Using Multispectral Airborne Laser Scanner Data
Impervious surfaces are land covers that do not allow water penetration. Water runoff from impervious surfaces can cause major flooding in extreme climates; therefore, mapping such surface covers in urban areas is of great importance for water resources, climatology, and urban studies. Automated …
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Influence of stormwater control measures on watershed hydrology and biogeochemical cycling
<p>Urban development replaces vegetation with impervious surfaces and natural drainage channels with pipe networks that quicken flow paths and alter hydrologic regimes. Additionally, the import of food, application of fertilizer to lawns and gardens, and heightened atmospheric deposition increases …
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Understanding Streamflow Change at the Scale of a Major City: Chicago
… of the recession process, show that while impervious surfaces increase flooding, stormwater management facilities mitigate or even counter this impact over a wide range of scales. On the other hand, an urban water balance shows that low flows have increased since the impacts of e ffluent …
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Green Infrastructure in the Public Realm: Reimagining Stormwater and the Urban Fabric of Falls Church, Virginia
Impervious surfaces are the greatest contributors to degradation of water quality and large volumes of stormwater runoff. Green infrastructure is the holistic solution to this problem which not only reduces flooding but also actively moves towards achievement of larger environmental goals. Green …
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The Spatial Relationship Between Septic System Failure and Environmental Factors in Washington Township, Marion County, Indiana
… as soil type, tree roots, degree of slope, and impervious surfaces affect on-site wastewater treatment systems. It also discusses the effects each of these variables may have on a septic system, and the resulting impact a compromised system may have on the surrounding environment. This research …
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Analysing stormwater temperature at site-specific discharge points along the Liesbeek River, South Africa
… urban development has resulted in increased impervious landcover and the removal of natural vegetation. The continued anthropic modification of the Earth's surface towards an urban state, has had profound effects on the surrounding natural systems (Thompson et al., 2008). Consequently, recent …
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To pave or not to pave: A social landscape analysis of land use decision-making in the Lamprey River watershed
… four decades resulting in sprawl and increased impervious surfaces which threaten the ecological health of Great Bay. Calls for watershed-based strategies addressing growth and land use planning abound. This study addresses these challenges by examining the question of whether there is a …
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