Terrain evaluation through the assessment of geomorphometric parameters using DEM and GIS: case study of two major sub-watersheds in Attapady, South India

Prasannakumar, V.; Vijith, H.; Geetha, N.

doi:10.1007/s12517-011-0408-2

Cited by 43 publications

(21 citation statements)

References 30 publications

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“…Out of the variables controlling sediment yield, slope steepness and soil erodibility factor (K) were the important factors that could be considered constant in the short term. Slope steepness has important influences on precipitation retention, surface runoff and drainage rate in the catchments (Prasannakumar et al, 2011;Abu Salim, 2014). So, an increase in slope steepness increases the amount and velocity of the runoff and shear stress, which increases soil erosion and sediment load (Kinnell, 2012;Zhang et al, 2015).…”

Section: Sediment Yield and Controlling Factorsmentioning

confidence: 99%

Assessment of soil particle erodibility and sediment trapping using check dams in small semi-arid catchments

Vaezi

Abbasi

Keesstra

et al. 2017

CATENA

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A B S T R A C TCheck dams can be used as a source of information for studies on sediment characteristics and soil particle erodibility. In this study, sediment yield and grain size distribution (GSD) were measured in twenty small catchments draining into a rock check dam in NW Iran for different runoffs during 2010-2011. Significant correlations were found between sediment yield and slope steepness, vegetation cover and soil erodibility factor (K) of the catchments. The erodibility of soil particles was determined using the comparison of GSD between sediment and original soil. Clay was the most erodible soil particle which showed 2.05 times more percentage in sediment than the original soil. The erodibility of soil particles were strongly affected by the rainfall erosivity (EI 30 ). Check dams showed more effectiveness in trapping coarse particles (sand and gravel). The effectiveness of check dams in trapping coarse particles enhanced with increase in the remaining capacity of check dams.

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Section: Sediment Yield and Controlling Factorsmentioning

confidence: 99%

Assessment of soil particle erodibility and sediment trapping using check dams in small semi-arid catchments

Vaezi

Abbasi

Keesstra

et al. 2017

CATENA

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“…Detailed description of the related morphological network analysis consists of a number of waterways, length of the watercourses, and the rate of the ratio of Table 1. The morphometric variables that were measured in this study [22] [27].…”

Section: Methodsmentioning

confidence: 99%

“…In the last years, there have been many geomorphometric analyses of floods, soil erosion, morphotectonic, and limnology [14]- [19]. The development of geographic information systems and space technologies, digital elevation models are now mainly used in geo-morphometric analyses [20] [21] [22]. Spatial analysis technique is used to understand and evaluate the various aerographic shapes that form pelvic conditions and which directly affect the quantitative results of the morphometric features of drainage pelvis [23] [24].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Morphometric Characteristics of Wadi Al-Shumar Catchment in Jordan

Makhamreh¹,

Al-Hawary²,

Odeh³

2020

OJG

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The Geographic information system and Aster DEM data with 30 m resolution have been used for the derivation of the morphometric parameters of the Al-Shumar watershed in Jordan. It is an area of 330 km 2 , and it has seven sub-catchments. The drainage pattern of the watershed shows a dendritic and parallel pattern, with a drainage density value of 1.49-1.85 km/km 2. The bifurcation value of the sub-watersheds varies from 2.679 to 4.434, which reveals homogeneous drainage networks that formed on rocks when the influence of geologic structure on the stream network is negligible. The form factor value is near the rectangular shape except for the Al-Shiah and Al-Zarnouk watershed, these values are close to the circular shape and therefore they are vulnerable to flood risk in case of frequent rainfall events. The results are important in understanding the process of rainfall-runoff in Dryland environments and in adaptation of suitable water management practices on the sub-catchment level.

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“…ASTER-GDEM was applied in the study to enable proper and clear visualization of the topographic, geomorphic features and water-body detection on the problematic terrains. Several other works (Mejia-Navarro et al 1994;Daba et al 2003;Yalcin and Bulut 2007;Schwab et al 2008;Marzolff and Poesen 2009;Pradhan and Youssef 2009;Pirasteh et al 2013;Prasannakumar et al 2013) have applied similar techniques in topographic and geomorphologic analyses.…”

Section: Methodsmentioning

confidence: 99%

The study of the factors controlling rainfall-induced landslides at a failure-prone catchment area in Enugu, Southeastern Nigeria using remote sensing data

Igwe

2015

Landslides

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Using remote sensing data and geographic information system (GIS) analytical techniques, we investigated instability at Iva Valley where there is an anomalous concentration of landslide scars. The area has a fairly rugged topography caused to a large extent by the headward erosion by the east-flowing Ekulu River. Mass wasting is more pronounced on the poorly consolidated sandstone (Ajali) formation which (as a major aquifer) serves as the source of the Ekulu River and its tributaries. At the lower portion of the formation and the uppermost part of shale (Mamu) formation (fractured in some places), inter-bedded thin mudstone layers provide the sandstones additional resistance to erosion, which however leads to steeper slopes and very deep and narrow stream channels. Digital elevation models show that the landforms are dominantly lowlands and lowhills with landslides concentrated on river tributaries where failures on the incised slopes create further instability. The overlying sandstone formation seems inherently unstable because of its semi-consolidated and friable nature. The fractures (orientated NE-SW) in the underlying shale formation and the occasional removal of lateral support by mining or road construction probably aggravate the instability. Additional stress on the unstable sandy mass resulting from increase in self-weight and pore pressure during rainfall readily induces failure, which then steepens the slopes and renders them vulnerable to more collapse behaviors that create clusters of scars. The results show good agreement with field observations and literature data indicating the importance of remote sensing analysis, ASTER, and SRTM imagery in geomorphologic interpretations.

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Terrain evaluation through the assessment of geomorphometric parameters using DEM and GIS: case study of two major sub-watersheds in Attapady, South India

Cited by 43 publications

References 30 publications

Assessment of soil particle erodibility and sediment trapping using check dams in small semi-arid catchments

Assessment of soil particle erodibility and sediment trapping using check dams in small semi-arid catchments

Assessment of Morphometric Characteristics of Wadi Al-Shumar Catchment in Jordan

The study of the factors controlling rainfall-induced landslides at a failure-prone catchment area in Enugu, Southeastern Nigeria using remote sensing data

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