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mARM4D +
Soil Depth Evolution, comparison between fluvial and diffusive sediment transport mechanisms +
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23:23:24, 19 October 2010 +
Three 80 kyr simulations of soil depth in … Three 80 kyr simulations of soil depth in a semi-arid field site in southern Israel using the mARM4D soil-landscape evolution model (Cohen et al., 2009, 2010). The synchronized animations compare the effect of different sediment transport mechanisms on the soil-landscape evolution. </br>The top-left animation is when only fluvial sediment transport is simulated;</br>The top-right animation is when only diffusive sediment transport is simulated; and</br>The bottom-right is a combination of diffusive and fluvial sediment transport mechanisms.and fluvial sediment transport mechanisms. +
Sagy +
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Cohen +
Lehavim, Israel +
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22:34:28, 21 June 2017 +
Animation +
Soil-Landscape Evolution +
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This is part of a study examining the evol … This is part of a study examining the evolution of a transition region between the arid and Mediterranean climates in Israel. The main soil production process in this region is Aeolian deposition of Loess type soils. The Loess accumulation has persisted throughout the late-Pleistocene and early Holocene, peeked about 18 kyr BP and ceased about 9 kyr PB.</br>The hillslopes in this region are now mostly depleted of soil cover with some loess patches at the foothills and deep loess deposits at the valleys (see figures). We set to examine the mechanisms and drivers (climatic and/or anthropogenic) that led to this landscape. </br>In this animation we used the mARM4D soil-landscape model to compare the sediment transport mechanisms on one small ridge. The three synchronized 80 kyr animations are for when (1) only fluvial transport is simulated (top-left), (2) only diffusive transport is simulated (top-right) and (3) when both are simulated (bottom-right). The plot on the bottom-left of the movie shows the temporal changes in the processes parameters (based on literature analysis) representing climatic and anthropogenic effects.enting climatic and anthropogenic effects. +
39 sec +
Image:SoilDepth.jpg +
kDMvmMgYUOM +
