نتایج جستجو برای: floodplain mapping
تعداد نتایج: 202052 فیلتر نتایج به سال:
Beaver have expanded in their native habitats throughout the northern hemisphere in recent decades following reductions in trapping and reintroduction efforts. Beaver have the potential to strongly influence salmon populations in the side channels of large alluvial rivers by building dams that create pond complexes. Pond habitat may improve salmon productivity or the presence of dams may reduce...
The objective of this paper is to study the turbidity behavior in an Amazon Floodplain Lake. Observations of turbidity provide quantitative information about water quality conditions. However, the number of available in situ measurements of water quality characteristics is usually limited, especially temporal series variables and synoptic coverage of extensive water body. In order to contribute...
Subarctic Siberian freshwater ecosystems are unique due to severe climatic conditions and strong seasonal changes of water supply, temperature and nutrient availability. In this work we evaluated the relative influence of the illumination level linked with the diurnal cycle, local environmental heterogeneity and water level changes during the receding flood on the distribution and migrations of...
The purpose of this study was to determine the distribution flood locations in Rokan Hulu regional administrative area and socio-economic impact flooded households by modeling based on Geographic Information Systems (GIS). population is residential residents Regency floodplain sampling points located floodplains. possibility a disaster very vulnerable divided into 16 districts. research data ev...
The mapping of terrain features relies on the necessity an object-based approach, which can be related to constitution units. regionalization land surface parameters enables assessment characteristics inside unities and enhances heterogeneity outside these patches. This study presents a classification methodology for hierarchical geomorphometric delineation, using visual Random Forest (RF) in r...
Economical integration of permanent and emergency flood control options is a long-standing problem in water resources planning and management. A two-stage linear programming formulation of this problem is proposed and demonstrated which provides an explicit economic basis for developing integrated floodplain management plans. The approach minimizes the expected value of flood damages and costs,...
presenting additional information, views, and analyses that may help to refine the HHRA to be more reflective of the potential for exposures and risks due to polychlorinated biphenyls (PCBs) in the Rest of River portion of the Housatonic River and its floodplain. These comments generally follow the structure of the Peer Review Charge developed by EPA. As such, they first discuss each of the thr...
River floodplains in the Netherlands serve as water storage areas, while they also have the function of nature rehabilitation areas. Floodplain vegetation is therefore subject to natural processes of vegetation succession. At the same time, vegetation encroachment obstructs the water flow into the floodplains and increases the flood risk for the hinterland. Spaceborne pointable imaging spectros...
Flood-control levees are generally thought to increase flood height and velocity for a given discharge. While extensive areas of floodplain in the United States are leveed, the ecological impacts of levees have largely been ignored relative to other anthropogenic impacts to large river floodplains. We examined a century of flood control along the Wisconsin River by comparing simulated flood reg...
Recent advances in polarimetric SAR show promise for augmenting the capability of traditional interferometric SAR. In particular, a polarimetric topography technique provides useful slope information, and polarimetric interferometry may be used to decompose the response into vegetation and ground surface contributions. Here we discuss an integrated approach that utilizes the combined capability...
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