نتایج جستجو برای: catchments these sub
تعداد نتایج: 3233704 فیلتر نتایج به سال:
Few researches about prioritization of sub-watersheds of watersheds were conducted to watershed management operations in the world. Cause of existing of professional intervention in traditional method of watershed management office, this research was carried out to prioritization of sub-watersheds via multi-criteria decision making techniques (TOPSIS and VIKOR method in 12 different weighting c...
Abstract. Direct land-to-atmosphere carbon exchange has been the primary focus in previous studies of peatland disturbance and subsequent restoration. However, loss via fluvial pathway is a significant term budgets requires consideration to assess overall impact restoration measures. This study aimed determine effect land management regime on aquatic concentrations fluxes an area within UK's la...
Abstract The prioritisation of catchments, particularly in the context catchment plans and management programmes, is part water resources development. In fact, morphometric analysis assisted by geospatial technology carried out prioritising sub-catchments according to their natural resource availability characteristics. Information on geomorphology erosion factors study area used preparation lo...
Integrating a geographic information system and multi-criteria decision making methods have been lead to provide spatial multi-criteria decision making methods. In this study, the spatial potential of flooding was determined based on analytic network process and analytic hierarchy process. At first, six factors of flooding were determined as criteria. The criteria were the slope, hill-slope asp...
Exeter. He is a rural policy specialist and a rural sociologist with particular interests in applying interdisciplinary approaches to policy-relevant research and in direct engagement in the policy process. research background is in soil hydrology and water flow pathways, and microbial transfer and survival within agricultural environments. University of Exeter. A human geographer by training, ...
The arid zone catchments of the Lake Eyre Basin (LEB, area of 1.2*10km) in central Australia have unregulated, highly variable flow regimes and contain a paucity of gauging stations. In developing hydrological models of these catchments, only limited gauging station data are available for identifying the broad landscape differences influencing runoff and streamflow. The catchments have been div...
Catchments that do not behave the way the hydrologist expects, expose the frailties of hydrological science, particularly its unduly simplistic treatment of input and model uncertainty. A conceptual rainfall– runoff model represents a highly simplified hypothesis of the transformation of rainfall into runoff. Sub-grid variability and mis-specification of processes introduce an irreducible model...
In urban catchments of arid central Arizona, we investigate how the export of mineral and organic nitrogen (N) in storm runoff is regulated by interactions between local landscape characteristics and broader scale storm features. First, we test whether N export is more a function of (1) processes that affect N concentration in runoff or (2) the propensity of the catchment to convey rainfall as ...
In drinking water catchments, reduction of pathogen loads delivered to reservoirs is an important priority for the management of raw source water quality. To assist with the evaluation of management options, a process-based mathematical model (pathogen catchment budgets - PCB) is developed to predict Cryptosporidium, Giardia and E. coli loads generated within and exported from drinking water ca...
In 1998 and as part of a science cooperation and technology transfer effort, the Hydrologic Research Center (HRC) and collaborators designed and implemented at the Panama Canal Authority (PCA) a prototype forecasting system for the real time rainfall forecasting over a number of small sub-catchments of the 3,200-sqkm mountainous Panama Canal Watershed in Panama (Figure 1). The system (called PA...
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