Download or read book Catchment Discharge and Suspended Sediment Transport as Indicators of Physical Soil and Water Conservation in the Minchet Catchment Anjeni Research Unit written by Urs Peter Bosshart and published by . This book was released on 1997 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catchment Discharge and Suspended Sediment Transport as Indicators of Physical Soil and Water Conservation in the Minchet Catchment Anjemi Research Unit written by Urs Bosshart and published by . This book was released on 1997 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catchment Discharge and Suspended Sediment Transport as Indicators of Physical Soil and Water Conservation in the Mayketin Catchment Afdeyu Research Unit written by Urs Bosshart and published by . This book was released on 1997 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catchment Discharge and Suspended Sediment Transport as Indicators of Physical Soil and Water Conservation in the Mayketin Catchment Afdey Research Unit written by Urs Peter Bosshart and published by . This book was released on 1997 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mountain Research and Development written by and published by . This book was released on 1981 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Towards Sustainable Land Use written by and published by . This book was released on 1998 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status and Trends in Suspended sediment Discharges Soil Erosion and Conservation Tillage in the Maumee River Basin Ohio Michigan and Indiana written by Donna N. Myers and published by . This book was released on 2000 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Management and Sediment Control for Urbanizing Areas written by United States. Soil Conservation Service and published by . This book was released on 1972 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catchment Discharge and Suspended Sediment Transport in the Highlands of Ethiopia and Eritrea written by Urs Bosshart and published by . This book was released on 1995 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Suspended Sediment Production and Transfer in Mesoscale Catchments written by Magdalena Uber and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of soil erosion by water and the transfer of suspended solids from watersheds to rivers is crucial given the environmental and socio-economic issues with regards to growing human influence and the expected intensification of these processes under climate change. The objective of this thesis is to understand how rainfall variability controls the activation of different sediment source zones and the dynamics of hydro-sedimentary flows in two mesoscale Mediterranean catchments, i.e. the Claduègne (42 km2, subcatchment of the Ardèche) and the Galabre (20 km2 , subcatchment of the Durance) which are members of the OZCAR critical zone research infrastructure.In the first part, the contributions of the erosion zones to sediment fluxes at the outlet of the Claduègne catchment were quantified at high temporal resolution with a low-cost sediment fingerprinting approach. Two sets of tracers (Color and X-ray fluorescence tracers) and three mixing models were compared to assess the sensitivity of estimated source contributions to these methodological choices. Marly-calcareous badlands were identified as the main sediment source. A similar approach carried out on the Galabre catchment area showed that badlands on molasses were the main source. The comparison of tracer sets and mixing models, showed that the methodological choices generated important differences. Thus, we suggest a multi-tracer-multi-model ensemble approach to obtain more robust results. The application of this approach to a large number of sediment samples highlighted the important within and between event variability in the contributions of different sediment sources, raising questions about the hydro-sedimentary processes that cause this variability.We hypothesized that this variability resulted from variable suspended sediment transit time distributions governed by the interplay of (i) catchment characteristics such as the location of different sources and how they are linked to the outlet (referred to as structural sediment connectivity) and (ii) the spatio-temporal characteristics of rain events that activate and impact transfer velocities (i.e. functional connectivity).Thus, in the second part, a distributed numerical model based on the resolution of Saint Venant equations coupled to a multi-source erosion module was used to evaluate the respective roles of structural and functional connectivity. Sensitivity analysis of the discretization and parameterization choices (i.e. threshold of contributing drainage area to identify the river network, values of roughness coefficients on hillslopes and the river) showed that the location of the sediment sources in the watershed was more important than the modeling choices when the parameters were limited to realistic range. A general temporal pattern of source contributions was observed. This was consistent with the results of the fingerprinting approach and the distribution of distances from the sources to the river and the outlet. The same pattern persists for different rainfall durations or intensities but became much more variable when bimodal hyetographs or spatially variable precipitation was applied. In addition, the location of the rainfall with respect to the sources determined the average contributions of the sources and thus differences between rainfall events.The two approaches, sediment fingerprinting and numerical modeling, were found to complement each other and their combined application has a high potential for understanding how interactions between structural and functional connectivity control the dynamics of sediment fluxes in mesoscale catchments.

Download or read book Suspended sediment Discharge in Five Streams Near Harrisburg Pennsylvania Before During and After Highway Construction written by Lloyd A. Reed and published by . This book was released on 1980 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Suspended Sediment Transport During Flood Flows a Small Catchment written by Renzo Rosso and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sediment and Water Quality in River Catchments written by Ian D. L. Foster and published by . This book was released on 1995-12-05 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eminent contributors present papers essential to a greater understanding of solute and sediment behaviour, the methods of analysis and interpretation of rating curves, the impact of urbanisation, the assessment of spatial patterns of process at the drainage basin and the global scales, sediment sources and sinks, radionuclide studies and much more.

Download or read book Variability in Stream Erosion and Sediment Transport written by International Association of Hydrological Sciences and published by . This book was released on 1994 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Suspended Sediment Transport During Flood Flows from a Small Catchment written by Renzo Rosso and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sediment Runoff from Agricultural Watersheds written by Eileen Marie Cashman and published by . This book was released on 1997 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spatio temporal Differences Dominate Suspended Sediment Dynamics in Medium sized Catchments in Central Germany written by Jan Henrik Blöthe and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Suspended sediment transport, dominating material export from lowland river systems, is highly variable in space and time. Since suspended sediment transport can have adverse effects on human infrastructure, targeted management is imperative. To achieve this, a thorough understanding of suspended sediment dynamics is needed, but requires long-term monitoring data. Despite studies investigating suspended sediment dynamics on decadal time scales, an assessment of the spatio-temporal variability across adjacent river catchments is still lacking. To fill this gap, we analyse suspended sediment transport at twelve stations along German upland rivers, monitored on a daily basis for 28 to 54 years. All monitoring stations belong to the Rhine (Lahn, Lippe, Main, and Neckar) and Weser river systems (Fulda, Leine, Werra, and Weser) and have contributing areas between 2500 and 22,000 km2. Although located in comparable topo-climatic settings, average sediment yield for the monitoring period varied more than fourfold. Covering the range of 5.9 to 28.7 t km−2 yr−1, we found the highest and lowest suspended sediment yields for the Neckar and Lippe catchments, respectively. Using two different streamflow separation approaches, we estimated the contribution of stormflow discharge to total sediment transport to fall between 73 and 85 % in the Neckar and Lahn rivers while remaining ~15 % lower for the remaining catchments. Investigating the relevance of extreme events, we found the share of total suspended sediment load transported during the ten largest events to vary between ~28 % for the Neckar and ~8 % for the Lippe and Werra catchments. These events were predominantly characterized by clockwise hysteresis loops that hint to in-channel reworking as a significant material source, with the exception of the Neckar stations where anti-clockwise hysteresis patterns prevailed. Here, the hysteresis analysis indicates sediment delivery from more distant sources in the headwater regions, likely related to elevated rainfall intensities and the susceptibility of the escarpment of the Swabian Alb towards landsliding. We conclude that the combined effect of varying rainfall amounts and intensities, the fraction of steeper slopes as well as lithological differences explain the across-catchment variability on multiple time scales that is further modulated by river management practices