Relationship of sediment yield to connectivity index in small watersheds with similar erosion potentials

2021 ◽  
Author(s):  
Mahmood Arabkhedri ◽  
Kohzad Heidary ◽  
Mohammad-Reza Parsamehr
Keyword(s):  
Sediment Yield ◽  
Connectivity Index ◽  
Small Watersheds ◽  
Relationship Of

A System for Measuring Total Sediment Yield from Small Watersheds

1970 ◽  
Vol 6 (3) ◽  
pp. 818-826 ◽  
Author(s):  
Harry E. Brown ◽  
Edward A. Hansen ◽  
Norman E. Champagne
Keyword(s):  
Sediment Yield ◽  
Small Watersheds ◽  
Total Sediment

Sediment Yield and Pollution from Small Watersheds under Changing Climatic Conditions

1994 ◽  
pp. 253-265
Author(s):  
Istvan Bogardi ◽  
Jacques Ganoulis ◽  
Lucien Duckstein ◽  
Istvan Matyasovszky
Keyword(s):  
Sediment Yield ◽  
Climatic Conditions ◽  
Small Watersheds

scholarly journals Relationship of Weather Types on the Seasonal and Spatial Variability of Rainfall, Runoff, and Sediment Yield in the Western Mediterranean Basin

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 609 ◽  
Author(s):  
D. Peña-Angulo ◽  
E. Nadal-Romero ◽  
J.C. González-Hidalgo ◽  
J. Albaladejo ◽  
V. Andreu ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Spatial Variability ◽  
Sediment Yield ◽  
High Frequency ◽  
Mediterranean Basin ◽  
Western Mediterranean ◽  
Rainfall Runoff ◽  
Western Mediterranean Basin ◽  
Relationship Of ◽  
Runoff And Sediment Yield

Rainfall is the key factor to understand soil erosion processes, mechanisms, and rates. Most research was conducted to determine rainfall characteristics and their relationship with soil erosion (erosivity) but there is little information about how atmospheric patterns control soil losses, and this is important to enable sustainable environmental planning and risk prevention. We investigated the temporal and spatial variability of the relationships of rainfall, runoff, and sediment yield with atmospheric patterns (weather types, WTs) in the western Mediterranean basin. For this purpose, we analyzed a large database of rainfall events collected between 1985 and 2015 in 46 experimental plots and catchments with the aim to: (i) evaluate seasonal differences in the contribution of rainfall, runoff, and sediment yield produced by the WTs; and (ii) to analyze the seasonal efficiency of the different WTs (relation frequency and magnitude) related to rainfall, runoff, and sediment yield. The results indicate two different temporal patterns: the first weather type exhibits (during the cold period: autumn and winter) westerly flows that produce the highest rainfall, runoff, and sediment yield values throughout the territory; the second weather type exhibits easterly flows that predominate during the warm period (spring and summer) and it is located on the Mediterranean coast of the Iberian Peninsula. However, the cyclonic situations present high frequency throughout the whole year with a large influence extended around the western Mediterranean basin. Contrary, the anticyclonic situations, despite of its high frequency, do not contribute significantly to the total rainfall, runoff, and sediment (showing the lowest efficiency) because of atmospheric stability that currently characterize this atmospheric pattern. Our approach helps to better understand the relationship of WTs on the seasonal and spatial variability of rainfall, runoff and sediment yield with a regional scale based on the large dataset and number of soil erosion experimental stations.

scholarly journals Relationship of runoff, erosion and sediment yield to weather types in the Iberian Peninsula

Geomorphology ◽  
2015 ◽  
Vol 228 ◽  
pp. 372-381 ◽  
Author(s):  
E. Nadal-Romero ◽  
J.C. González-Hidalgo ◽  
N. Cortesi ◽  
G. Desir ◽  
J.A. Gómez ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Sediment Yield ◽  
Weather Types ◽  
Relationship Of

scholarly journals Sediment Regimes in South Korea

2021 ◽  
Author(s):  
Chun-Yao Yang ◽  
Woochul Kang ◽  
Jai Hong ◽  
Pierre Julien
Keyword(s):  
South Korea ◽  
Sediment Yield ◽  
Measurement Data ◽  
Cumulative Distribution ◽  
Watershed Area ◽  
Flow Duration ◽  
Small Watersheds ◽  
Flow Duration Curves ◽  
Large Floods ◽  
Sedimentation Processes

This study provides a comprehensive review of the existing river measurement data of South Korea. The specific sediment yield in the country is 5–1,500 tons/km ·year. The watershed area decisively affects the shapes of the curves for flow duration, sediment rating, and cumulative distribution of water and sediment discharge, and it can determine the effects of topographic and anthropogenic characteristics on erosion and sedimentation processes. Regarding flow regime, small watersheds have flashy hydrographs and high sediment concentrations at a given flow discharge. The coefficient of the sediment rating curves for various rivers decreases from 1 to 0.02 as the watershed area increases from 100 to 20,000 km , with the exponent of the curves ranging from 1.5 to 2.0. Moreover, sediment transport in small watersheds depends on large floods. The half-yield discharge typically ranges from 5 to 40 times the mean discharge, and it decreases with increasing watershed area. This study proposes equations to calculate the annual discharges, flow duration curves, sediment yield, and cumulative distribution curves of the flow and sediment, as well as the sediment yield at reservoirs in South Korea. Additionally, the sediment regimes in the country are compared to those in other continental regions.

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