https://csdms.colorado.edu/csdms_wiki/api.php?action=feedcontributions&feedformat=atom&user=Yuvalshmilo 2026-04-27T17:59:11Z User contributions MediaWiki 1.44.2 https://csdms.colorado.edu/csdms_wiki/index.php?title=2026_CSDMS_meeting-076&diff=626238 2026-04-07T07:56:21Z

<p>Yuvalshmilo: Created page with &quot;{{CSDMS meeting personal information template-2026 |CSDMS meeting first name=Yuval |CSDMS meeting last name=Shmilovitz |CSDMS meeting institute=University of Colorado Boulder |CSDMS meeting city=Boulder |CSDMS meeting country=United States |CSDMS meeting state=Colorado |CSDMS meeting email address=yuval.shmilovitz@colorado.edu }} {{CSDMS meeting select clinics1 2026 |CSDMS_meeting_select_clinics1_2026=1) Introduction to Structure-from-Motion Photgrammetry for Mapping Lan...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2026<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=University of Colorado Boulder<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Colorado<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2026<br /> |CSDMS_meeting_select_clinics1_2026=1) Introduction to Structure-from-Motion Photgrammetry for Mapping Landscapes<br /> }}<br /> {{CSDMS meeting select clinics2 2026<br /> |CSDMS_meeting_select_clinics2_2026=1) Morphodynamical simulations using Delft3D FM<br /> }}<br /> {{CSDMS meeting select clinics3 2026<br /> |CSDMS_meeting_select_clinics3_2026=4) Simulating landslide sediment transport and runout hazard in Landlab using MassWastingRunout<br /> }}<br /> {{CSDMS meeting abstract yes no 2026<br /> |CSDMS meeting abstract submit 2026=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2026<br /> |CSDMS meeting poster Epub submit 2026=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2026<br /> |CSDMS meeting abstract title=Extended Gravel-Bedrock Eroder 1.0: a Landlab component for sediment and bedrock dynamics across a range of river systems<br /> |Working_group_member_WG_FRG=Terrestrial Working Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Greg<br /> |CSDMS meeting coauthor last name abstract=Tucker<br /> |CSDMS meeting coauthor institute / Organization=University of Colorado Boulder<br /> |CSDMS meeting coauthor town-city=Boulder<br /> |CSDMS meeting coauthor country=United States<br /> |State=Colorado<br /> |CSDMS meeting coauthor email address=gtucker@colorado.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Susannah<br /> |CSDMS meeting coauthor last name abstract=Morey<br /> |CSDMS meeting coauthor institute / Organization=Vanderbilt University<br /> |CSDMS meeting coauthor town-city=Nashville<br /> |CSDMS meeting coauthor country=United States<br /> |State=Tennessee<br /> |CSDMS meeting coauthor email address=susannah.m.morey@vanderbilt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Vanessa<br /> |CSDMS meeting coauthor last name abstract=Gabel<br /> |CSDMS meeting coauthor institute / Organization=University of Colorado Boulder<br /> |CSDMS meeting coauthor town-city=Boulder<br /> |CSDMS meeting coauthor country=United States<br /> |State=Colorado<br /> |CSDMS meeting coauthor email address=Vanessa.Gabel@colorado.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Benjamin<br /> |CSDMS meeting coauthor last name abstract=Campforts<br /> |CSDMS meeting coauthor institute / Organization=VU University Amsterdam<br /> |CSDMS meeting coauthor town-city=Amsterdam<br /> |CSDMS meeting coauthor country=Netherlands<br /> |CSDMS meeting coauthor email address=b.campforts@vu.nl<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Eric<br /> |CSDMS meeting coauthor last name abstract=Hutton<br /> |CSDMS meeting coauthor institute / Organization=University of Colorado Boulder<br /> |CSDMS meeting coauthor town-city=Boulder<br /> |CSDMS meeting coauthor country=United States<br /> |State=Colorado<br /> |CSDMS meeting coauthor email address=Eric.Hutton@Colorado.edu<br /> }}<br /> {{CSDMS meeting abstract template 2026<br /> |CSDMS meeting abstract=Earth's rivers, especially in mountainous settings, carry sediment with a wide variety of properties, among which are size and lithology. Despite their critical influence on bedrock incision, transport/deposition patterns, and topographic forms, sediment properties are often overlooked in landscape evolution models. Here we present a new set of Landlab components centered on the Enhanced Gravel Bedrock Eroder (EGBE), which simultaneously describes the evolution of a gravel-sized alluvium layer and the underlying bedrock in a network of rivers. The component implements numerical solutions to fluvial sediment transport, deposition, attrition, and bedrock incision, taking into account sediment load heterogeneity in size or toughness. Additionally, EGBE allows the user to select between two assumptions regarding channel geometry: a fixed-width model (in which channel width scales with water discharge) and a dynamic-width model (in which channel width adjusts such that the bed shear stress is slightly above the transport threshold for the median-size sediment grain). EGBE relies on other Landlab components that handle flow routing and mass exchange among different sediment classes, and it can be coupled with hillslope sediment transport components. These components are integrated in a code called EGBE-LEM.<br /> <br /> A set of 1D EGBE numerical experiments highlights the importance of sediment size for channel steepness. These experiments illustrate how an upstream source of coarse, resistant gravel leads to a steeper overall profile. Conversely, a downstream source steepens only the lower portion of the profile, leading to a break-in-slope that coincides with the lithologic transition. Several additional EGM-LEM experiments explored the impact of sediment toughness heterogeneity on landscape evolution. These demonstrate how upstream variations in toughness can influence the form and dynamics of channel networks downstream. For example, upstream variations in the toughness of source material can lead to asymmetric drainage divides and contrasts in the steepness index across adjacent drainage basins. In addition, we demonstrate how lithologic heterogeneity can influence river network concavity, planform geometry and steepness.<br /> <br /> EGBE improves on previous modeling efforts by explicitly representing sediment attrition and size-dependent transport of heterogeneous sediment load: a useful addition given that size and lithology are two of the most commonly used and accessible measures of river systems. In addition, the EGBE-LEM code provides an advanced integrated modeling platform for understanding mechanisms and dynamics across a range of river types and geological settings.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=2025_CSDMS_meeting-114&diff=610177 2025-04-03T06:07:04Z

<p>Yuvalshmilo: </p> <hr /> <div>{{CSDMS meeting personal information template-2025<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=CIRES, University of Colorado Boulder<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Colorado<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2025<br /> |CSDMS_meeting_select_clinics1_2025=1) Coupled Simulations in ASPECT/FastScape Part 1<br /> }}<br /> {{CSDMS meeting select clinics2 2025<br /> |CSDMS_meeting_select_clinics2_2025=4) Pattern-oriented Agent Based Modeling to Achieve Structural Realism and Testable Predictions<br /> }}<br /> {{CSDMS meeting select clinics3 2025<br /> |CSDMS_meeting_select_clinics3_2025=1) Landlab’s NetworkSedimentTransporter: A Lagrangian Model for River Bed Material Transport Dynamics<br /> }}<br /> {{CSDMS meeting abstract yes no 2025<br /> |CSDMS meeting abstract submit 2025=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2025<br /> |CSDMS meeting poster Epub submit 2025=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2025<br /> |CSDMS meeting abstract title=Ecohydrology and lithological controls on ephemeral catchments landscape evolution: insights from the High Plains (Colorado) using high-resolution climate projections<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Critical Zone Focus Research Group, Ecosystem Dynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2025<br /> |CSDMS meeting abstract=Over the recent geological past, alternations in the sediment budgets of low-order dryland catchments have left behind pronounced topographic imprints and are observed worldwide. The modern consequences of similar shifts extend from damage to ecosystems and crop yields to worldwide geopolitics. Quantifying erosion trends and understanding potential drivers for changes in the sediment budget is, however, a long-lasting challenge; ephemeral catchments are commonly situated in hydrological and vegetation boundary zones, greatly impacted by fine-scale and episodic erosion-triggered climatic events that are hard to observe and computationally complex over landscape evolution time scales.<br /> <br /> This poster presents a set of catchment-scale landscape evolution numerical experiments designed according to field observations and projected climate records for the end of the 21st century derived from a convection-permitting climate model. The results demonstrate how changes in minute-scale rainfall bursts, as measured under modern global warming, could significantly enhance erosion rates and impact multi-century landscape evolution, even without a change in the general wetness level. Further, the presented modeling approach translates the future climate projection over the High Plains of Colorado into changes in vegetation cover along with an increase in sediment yield, which is contrary to the predicted general reduction in precipitation over the region. Modeling results, in conjunction with hints from a study area, reveal key relations between catchment morphology, soil/lithological properties, and vegetation cover that contribute to the understanding of landscape evolution under climatic changes.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=2025_CSDMS_meeting-114&diff=610068 2025-03-28T20:19:30Z

<p>Yuvalshmilo: Created page with &quot;{{CSDMS meeting personal information template-2025 |CSDMS meeting first name=Yuval |CSDMS meeting last name=Shmilovitz |CSDMS meeting institute=CIRES, University of Colorado Boulder |CSDMS meeting city=Boulder |CSDMS meeting country=United States |CSDMS meeting state=Colorado |CSDMS meeting email address=yuval.shmilovitz@colorado.edu }} {{CSDMS meeting select clinics1 2025 |CSDMS_meeting_select_clinics1_2025=1) Coupled Simulations in ASPECT/FastScape Part 1 }} {{CSDMS me...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2025<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=CIRES, University of Colorado Boulder<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Colorado<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2025<br /> |CSDMS_meeting_select_clinics1_2025=1) Coupled Simulations in ASPECT/FastScape Part 1<br /> }}<br /> {{CSDMS meeting select clinics2 2025<br /> |CSDMS_meeting_select_clinics2_2025=4) Pattern-oriented Agent Based Modeling to Achieve Structural Realism and Testable Predictions<br /> }}<br /> {{CSDMS meeting select clinics3 2025<br /> |CSDMS_meeting_select_clinics3_2025=1) Landlab’s NetworkSedimentTransporter: A Lagrangian Model for River Bed Material Transport Dynamics<br /> }}<br /> {{CSDMS meeting abstract yes no 2025<br /> |CSDMS meeting abstract submit 2025=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2025<br /> |CSDMS meeting poster Epub submit 2025=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2025<br /> |CSDMS meeting abstract title=Ecohydrology and lithological controls on ephemeral catchments landscape evolution: insights from the High Plains (Colorado) using high-resolution climate projections<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Critical Zone Focus Research Group, Ecosystem Dynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2025<br /> |CSDMS meeting abstract=Over the recent geological past, alternations in the sediment budget of low-order dryland catchments were observed worldwide, leaving behind pronounced topographic imprints. The modern consequences of similar shifts extend from damage to ecosystems, infrastructure, and crop yield to worldwide geopolitics. Quantifying erosion trends and understanding potential drivers for changes in the sediment budget is, however, a long-lasting challenge; ephemeral catchments are commonly situated in hydrological and vegetation boundary zones, greatly impacted by fine-scale and episodic erosion-triggered climatic events that are hard to observe and computationally complex over landscape evolution time scale.<br /> This poster presents a set of catchment-scale landscape evolution numerical experiments designed according to field observations and projected climate records for the end of the 21st century over the High Plains of Colorado (USA), derived from a convection-permitting climate model. The results demonstrate how changes in minute-scale rainfall bursts, as measured under modern global warming, could significantly enhance erosion rates and impact multi-century landscape evolution, even without a change in the general wetness level. Further, the presented modeling approach translates the future climate projection over the High Plains into changes in vegetation cover and an increase in sediment yield, contrary to the predicted general precipitation reduction in the region. Modeling results, in conjunction with hints about relations between catchment morphology, soil/lithological properties, and vegetation cover observed at the study area, reveal key aspects of surface processes in ephemeral catchments that contribute to the understanding of landscape evolution under climatic changes.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=2024_CSDMS_meeting-092&diff=439404 2024-04-01T01:57:32Z

<p>Yuvalshmilo: </p> <hr /> <div>{{CSDMS meeting personal information template-2024<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=The University of Colorado Boulder, CIRES<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Colorado<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2024<br /> |CSDMS_meeting_select_clinics1_2024=2) Vegetation as ecogeomorphic features<br /> }}<br /> {{CSDMS meeting select clinics2 2024<br /> |CSDMS_meeting_select_clinics2_2024=4) Coupling biological and surface processes in landscape evolution models<br /> }}<br /> {{CSDMS meeting select clinics3 2024<br /> |CSDMS_meeting_select_clinics3_2024=4) A Hands-On Workshop on GPU-Based Landscape Evolution Modeling<br /> }}<br /> {{CSDMS meeting abstract yes no 2024<br /> |CSDMS meeting abstract submit 2024=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2024<br /> |CSDMS meeting poster Epub submit 2024=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2024<br /> |CSDMS meeting abstract title=Gully development and soil erosion in headwater catchments: An event-based approach using Landlab<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2024<br /> |CSDMS meeting abstract=Ephemeral, steep-side channels (known as gullies and arroyos) are fundamental elements of soil erosion that threaten agricultural lands worldwide with the associated expectation that landscape degradation will accelerate due to anthropogenic climate change. Gullies are also central to landscape evolution as they are dynamic features that intensively altered between infilling and incision phases in the recent geological past. Yet, exogenic (e.g., due to climate or land-use change) and autogenic (e.g., due to natural oscillations between erosion/deposition phases) drivers of gully formation and of changes in their widespread occurrence are incompletely understood and quantified. This is, in part, because erosional dynamics of gully landforms are complex and hard to capture due to: (1) episodic and discontinuous sediment movement in response to discrete rain events, (2) unstable channel walls with frequent mass wasting, and (3) soil and vegetation properties that vary dynamically thus altering both the hydrology and slope stability.<br /> In this work, we focus on developing a new catchment-scale gully erosion model that enables quantification of soil erosion rates and topographic evolution in response to changes in rainfall patterns and vegetation cover over historical and longer timescales. The model includes explicit representation of rainstorm runoff and erosion over sub-minute time scales. During simulation, soil particles are transported both in suspension and as bedload in accordance with their size. Episodic bank failures and headcuts evolve based on local stability criteria derived from soil properties and failure geometry. This poster presents the model configuration, its main components, and the general modeling approach that aims to bridging gaps between event-scale hydrology, sediment dynamics and longer-term landscape evolution models using new and existing components in the Landlab modeling library. We also present preliminary results of model validation against runoff and sediment data from a field site and a sensitivity analysis on how sediment flux and landform development respond to plausible changes in rainstorm properties, landcover, and vegetation dynamics.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=2024_CSDMS_meeting-092&diff=439385 2024-03-31T17:12:55Z

<p>Yuvalshmilo: </p> <hr /> <div>{{CSDMS meeting personal information template-2024<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=CU Boulder, CIRES<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Colorado<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2024<br /> |CSDMS_meeting_select_clinics1_2024=2) Vegetation as ecogeomorphic features<br /> }}<br /> {{CSDMS meeting select clinics2 2024<br /> |CSDMS_meeting_select_clinics2_2024=4) Coupling biological and surface processes in landscape evolution models<br /> }}<br /> {{CSDMS meeting select clinics3 2024<br /> |CSDMS_meeting_select_clinics3_2024=4) A Hands-On Workshop on GPU-Based Landscape Evolution Modeling<br /> }}<br /> {{CSDMS meeting abstract yes no 2024<br /> |CSDMS meeting abstract submit 2024=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2024<br /> |CSDMS meeting poster Epub submit 2024=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2024<br /> |CSDMS meeting abstract title=Gully development and soil erosion in headwater catchments: An event-based approach using Landlab<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2024<br /> |CSDMS meeting abstract=Ephemeral, steep-side channels (known as gullies and arroyos) are fundamental elements of soil erosion that threaten agricultural lands worldwide with the associated expectation that landscape degradation will accelerate due to anthropogenic climate change. Gullies are also central to landscape evolution as they are dynamic features that intensively altered between infilling and incision phases in the recent geological past. Yet, exogenic (e.g., due to climate or land-use change) and autogenic (e.g., due to natural oscillations between erosion/deposition phases) drivers of gully formation and of changes in their widespread occurrence are incompletely understood and quantified. This is, in part, because erosional dynamics of gully landforms are complex and hard to capture due to: (1) episodic and discontinuous sediment movement in response to discrete rain events, (2) unstable channel walls with frequent mass wasting, and (3) soil and vegetation properties that vary dynamically thus altering both the hydrology and slope stability.<br /> In this work, we focus on developing a new catchment-scale gully erosion model that enables quantification of soil erosion rates and topographic evolution in response to changes in rainfall patterns and vegetation cover over historical and longer timescales. The model includes explicit representation of rainstorm runoff and erosion over sub-minute time scales. During simulation, soil particles are transported both in suspension and as bedload in accordance with their size. Episodic bank failures and headcuts evolve based on local stability criteria derived from soil properties and failure geometry. This poster presents the model configuration, its main components, and the general modeling approach that aims to bridging gaps between event-scale hydrology, sediment dynamics and longer-term landscape evolution models using new and existing components in the Landlab modeling library. We also present preliminary results of model validation against runoff and sediment data from a field site and a sensitivity analysis on how sediment flux and landform development respond to plausible changes in rainstorm properties, landcover, and vegetation dynamics.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Yuvalshmilo&diff=439384 2024-03-31T17:10:43Z

<p>Yuvalshmilo: </p> <hr /> <div>{{Signup information member<br /> |First name member=Yuval<br /> |Last name member=Shmilovitz<br /> |Institute member=The University of Colorado Boulder<br /> |City member=Boulder<br /> |Country member=United States<br /> |State member=Colorado<br /> |Confirm email member=yuval.shmilovitz@colorado.edu<br /> |Working group member=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group, Modeling Platform Interoperability Initiative<br /> |Emaillist group member=yes<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=2024_CSDMS_meeting-092&diff=439383 2024-03-31T17:02:54Z

<p>Yuvalshmilo: Created page with &quot;{{CSDMS meeting personal information template-2024 |CSDMS meeting first name=Yuval |CSDMS meeting last name=Shmilovitz |CSDMS meeting institute=CU Boulder, CIRES |CSDMS meeting city=Boulder |CSDMS meeting country=United States |CSDMS meeting state=COLORADO |CSDMS meeting email address=yuval.shmilovitz@colorado.edu }} {{CSDMS meeting select clinics1 2024 |CSDMS_meeting_select_clinics1_2024=2) Vegetation as ecogeomorphic features }} {{CSDMS meeting select clinics2 2024 |CS...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2024<br /> |CSDMS meeting first name=Yuval<br /> |CSDMS meeting last name=Shmilovitz<br /> |CSDMS meeting institute=CU Boulder, CIRES<br /> |CSDMS meeting city=Boulder<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=COLORADO<br /> |CSDMS meeting email address=yuval.shmilovitz@colorado.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2024<br /> |CSDMS_meeting_select_clinics1_2024=2) Vegetation as ecogeomorphic features<br /> }}<br /> {{CSDMS meeting select clinics2 2024<br /> |CSDMS_meeting_select_clinics2_2024=4) Coupling biological and surface processes in landscape evolution models<br /> }}<br /> {{CSDMS meeting select clinics3 2024<br /> |CSDMS_meeting_select_clinics3_2024=4) A Hands-On Workshop on GPU-Based Landscape Evolution Modeling<br /> }}<br /> {{CSDMS meeting abstract yes no 2024<br /> |CSDMS meeting abstract submit 2024=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2024<br /> |CSDMS meeting poster Epub submit 2024=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2024<br /> |CSDMS meeting abstract title=Gully development and soil erosion in headwater catchments: An event-based approach using Landlab<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2024<br /> |CSDMS meeting abstract=Ephemeral, steep-side channels (known as gullies and arroyos) are fundamental elements of soil erosion that threaten agricultural lands worldwide with the associated expectation that landscape degradation will accelerate due to anthropogenic climate change. Gullies are also central to landscape evolution as they are dynamic features that intensively altered between infilling and incision phases in the recent geological past. Yet, exogenic (e.g., due to climate or land-use change) and autogenic (e.g., due to natural oscillations between erosion/deposition phases) drivers of gully formation and of changes in their widespread occurrence are incompletely understood and quantified. This is, in part, because erosional dynamics of gully landforms are complex and hard to capture due to: (1) episodic and discontinuous sediment movement in response to discrete rain events, (2) unstable channel walls with frequent mass wasting, and (3) soil and vegetation properties that vary dynamically thus altering both the hydrology and slope stability.<br /> In this work, we focus on developing a new catchment-scale gully erosion model that enables quantification of soil erosion rates and topographic evolution in response to changes in rainfall patterns and vegetation cover over historical and longer timescales. The model includes explicit representation of rainstorm runoff and erosion over sub-minute time scales. During simulation, soil particles are transported both in suspension and as bedload in accordance with their size. Episodic bank failures and headcuts evolve based on local stability criteria derived from soil properties and failure geometry. This poster presents the model configuration, its main components, and the general modeling approach that aims to bridging gaps between event-scale hydrology, sediment dynamics and longer-term landscape evolution models using new and existing components in the Landlab modeling library. We also present preliminary results of model validation against runoff and sediment data from a field site and a sensitivity analysis on how sediment flux and landform development respond to plausible changes in rainstorm properties, landcover, and vegetation dynamics.<br /> }}<br /> {{blank line template}}</div>

Yuvalshmilo https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Yuvalshmilo&diff=247240 2020-05-13T20:29:14Z

<p>Yuvalshmilo: Created page with &quot;{{Signup information member |First name member=Yuval |Last name member=Shmilovitz |Institute member=The Hebrew University of Jerusalem |City member=Jerusalem |Country member=I...&quot;</p> <hr /> <div>{{Signup information member<br /> |First name member=Yuval<br /> |Last name member=Shmilovitz<br /> |Institute member=The Hebrew University of Jerusalem<br /> |City member=Jerusalem<br /> |Country member=Israel<br /> |Confirm email member=yuval.shmilovich@mail.huji.ac.il<br /> |Working group member=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group, Modeling Platform Interoperability Initiative<br /> |Emaillist group member=yes<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Yuvalshmilo