Continental size, eustasy and sediment yield

Wyatt, Antony

doi:10.1007/bf00191824

Cited by 4 publications

(1 citation statement)

References 12 publications

(19 reference statements)

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“…Their primary use has been to characterize the distribution of elevation within a catchment -the study of hypsometry. Some authors have used hypsometry to characterize the distribution of elevations for continental regions so that dependent variables such as regional rainfall and sediment yield may be estimated (Hutchinson and Dowling, 1991;Wyatt, 1993). Other authors have tried to use hypsometry to interpret landform age (Schumm, 1956;Strahler, 1952Strahler, , 1964.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the hypsometric curve as an indicator of form and process in transport-limited catchment

Willgoose

Hancock

1998

Earth Surf. Process. Landforms

269

170

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Hypsometry has historically been used as an indicator of geomorphic form of catchments and landforms. Yet there has been litle work aimed at relating hypsometry to landform process and scale. This paper uses the SIBERIA catchment evolution model to explore linkages between catchment process and hypsometry. SIBERIA generates results that are qualitatively and quantitatively similar to observed hypsometric curves for physically realistic parameters. However, we show that not only does the hypsometry reflect landscape runoff and erosion process, but it is strongly dependent on channel network and catchment geometry. We show that the width to length ratio of the catchment has a significant influence on the shape of the hypsometric curve, though little on the hypsometric integral. For landforms dominated by fluvial sediment transport, the classic Strahler 'mature' hypsometric curve is only generated for catchments with roughly equal width and length. Narrow catchments show a hypsometric curve more similar to Strahler's 'monadnock' form. For landscapes dominated by diffusive transport, the simulated hypsometric curve is concave-down everywhere, this being consistent with curves reported for some example catchments in France. Because the transition between diffusive dominance to fluvial is scaledependent, with larger catchments exhibiting greater fluvial dominance, then the hypsometric curve is a scale-dependent descriptor of landforms. Experimental results for simulated landforms from a small-scale rainfall-erosion simulator are reported. It is shown that SIBERIA yields satisfactory fits to the data, confirming its ability to predict the form of the hypsometric curve from a simple model of geomorphic processes.

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Section: Introductionmentioning

confidence: 99%

Revisiting the hypsometric curve as an indicator of form and process in transport-limited catchment

Willgoose

Hancock

1998

Earth Surf. Process. Landforms

269

170

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Assessing the level of river basin evolution, erosion susceptibility and its correlation with morphometric characteristics using Geoinformatics techniques

Yammani,

Nagabathula

2024

Discov Geosci

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The application of Geoinformatics have become fastest and improved advanced tools to analyse and interpret the topography and hydrological characteristics. This study aimed to utilize the advantage of high resolution (30 m) remote sensing data of Shuttle Radar Topography Mission (SRTM) and the geoinformatic tools of Quantum Geographical Information System (QGIS) for extraction of detailed and accurate drainage morphometry and elevation information in preparation of hypsometric curves. Making use of QGIS, the SRTM data and topographic maps are georeferenced and pre-processed algorithm tools of stream burning and fill-DEM are applied for DEM preparation and extraction of accurate drainage network and its basin areas. From the DEM map, the details of elevation and area of basins are extracted for preparation of hypsometric curves. Hypsometric curves are analyzed to interpret and understand the heterogeneity in the levels of basin evolution/development and erosion at 4th order sub-basin level. The concave hypsometric curves of main basin and sub-basins indicate that total basin as well as sub-basins reached the old/monadnock stage due to the dominance of fluvial process. Based on the hypsometric area/integral (Ea) and Concavity of hypsometric curve values (Eh), five classes/stages of basin development and erosion levels are identified within the old/monadnock stage. The Ea values range from 0.10 to 0.35 and Eh range from 0.25 to 0.77 in this study area. Initial old/monadnock stage of basins have Ea values > 0.28 and Eh values < 0.4 indicating low levels of erosion among the sub-basins. Low hypsometric area/integral value (Ea) indicates the higher level of landmass removal by erosion and basin development. The oldest stage basins are identified with Ea values range from 0.10 to 0.15 and Eh values range from 0.61 to 0.77 indicating higher level of landmass removal/erosion. The lithological variation plays a significant role on hypsometry of the basins. The high hypsometric integral (Ea) values (i.e., 0.28 to 0.35) of 1,2 and 3 sub-basins indicating the early/ initial level of old stage in its’ basin development, since the resistant basalt formation is sandwiched between sandstones prevented deep erosion and depicting less dissected topography. The hypsometric integral has positive correlation with form factor and negative correlation with drainage morphometric characteristics. It indicates that the level of basin evolution increases as the form factor decreases but number of streams, length of streams, mean bifurcation ratio, relief, relief ratio and ruggedness ratio increases. This study is highly useful to understand the relation among morphometric characteristics, basin development and erosion levels through the analysis of hypsometric curves making use of Geoinformatic techniques.

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Sediment yield variability in Northern Ethiopia: A quantitative analysis of its controlling factors

Haregeweyn

Poesen

Nyssen

et al. 2008

CATENA

106

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Continental size, eustasy and sediment yield

Cited by 4 publications

References 12 publications

Revisiting the hypsometric curve as an indicator of form and process in transport-limited catchment

Revisiting the hypsometric curve as an indicator of form and process in transport-limited catchment

Assessing the level of river basin evolution, erosion susceptibility and its correlation with morphometric characteristics using Geoinformatics techniques

Sediment yield variability in Northern Ethiopia: A quantitative analysis of its controlling factors

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