PPT-RISK OF GULLY EROSION: METHODS AND EXAMPLES OF ESTIMATES

Aleksey Sidorchuk and Andrei Entin Lomonosov Moscow State University EGU20201426 The potential of the gully network characterizes the risk of gully erosion It is the maximum possible lengths widths and depths of the gullies . 1 Introduction 2 Demographic and other assumptions 3 Indicators from Spectrum Soil erosion and sediment control is not a new technology The USDA Soil Conservation Service and a number of State and local agencies have been developing and promoting the use of erosion and sediment control devices for years This chapter provides Above: An active gully head in the Clarence Valley Gully head If the gully head is active you will see it cutting into the drainage line above the gully, moving back up the slope. If you are not sure Weathering. The breakdown do the materials of Earth’s crust into smaller pieces.. Physical Weathering. Process by which rocks are broken down into smaller pieces by external conditions.. Types of Physical weathering. NoSQL Databases Table of Contents ApplicApplications:ations: Examples:Examples: ApplicApplications:ations: Examples:Examples: ApplicApplications:ations: Examples:Examples: TAKEAWAYS TAKEAWAYS TAKEAWAY Chad Lentz. Why Care?. Removes valuable topsoil. Carries away expensive nutrients. Increase tillage costs to fix. Creates algae blooms and dead zones due to excess nutrients in waterways. Types of Erosion. Water Erosion. How Does Moving Water Cause Erosion?. Erosion by water begins with a splash of rain.. Some rainfall sinks into the ground.. Some evaporates or is taken up by plants.. The rest of the water runs off over the land surface.. Block . Panchayath. 2011-15. Integrated Watershed . Management. . Programme. Location– . Tuneri. PIA. Watershed Map – . Tuneri. PIA. Relief and Drainage Map. At a Glance. Project Batch. II (2010-11). formation of landforms. weathering and erosion. The process of weathering and erosion are the main forces behind landscape types. . However, they are not the only reason for a plain, plateau, or a mountain region to form. . Weathering. Weathering is the process that breaks down rock and other substances at the Earth’s surface. . Heat, cold, water, and ice all contribute to weathering.. Repeated freezing and thawing for example can crack rock apart into smaller pieces. . Lesson 1. Water Erosion. How does Moving Water Cause Erosion?. Erosion is the process in which sediment that has been broken down through weathering is moved.. Agents of Erosion are:. Water. Wind. Glacial (ice). another.. 2 . kinds:. 1) . Rill erosion. is the erosion by running water in small channels. , on the side of a slope.. 2) . Gully erosion. is when a rill channel evolves to become deep and wide.. . Wided Batita . Ing. , . Ph.D. . Geomatics. . Laval . University. Québec, Canada . 28. th. April 2017. Outline. Statement of the Problem. . Methodology & Theoretical . Orientation. Findings. 1. Fashae . Olutoyin. . Adeola. , . 1. Obateru . Rotimi. . Oluseyi. , . 1. Olusola . Adeyemi. . Oludapo. 1. Department of Geography, University of Ibadan, Nigeria.. INTRODUCTION. Patton and Schumm, 1975; .