Causes of Soil Erosion Amanda Brown Environmental Science 136 Rainfall and runoff is a water erosion problem also known as splash erosion. This is the first stage in the erosion process. The impact of rainfall drops on the soil surface can break down soil aggregates as the impact of falling raindrops breaks up the topsoil. This erosion is caused by long lasting and less intense storms. Runoff can occur whenever there is excess water on a slope that can’t be absorbed into the soil or trapped
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Overgrazing Major Causes of Soil Erosion Lee Garrant Everest University Online Instructor: William Gangloff There are three major practices that expose soil to erosion and they can be corrected and create a more sustainable society. They are over cultivation‚ overgrazing‚ and deforestation. We were asked to pick one out of the three and discuss it‚ the one that’s I chose was overgrazing. Overgrazing is one of the major practices of exposing soil to erosion. Overgrazing isn’t a new issue
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The Palm Islands The palm island of Dubai is made on the artificial islands in the shape of palm tree with trunk‚ a crown with fronds and the surrounded by the crescent and it acts as the water break‚ which is considered by the world as eighth wonder of world‚ constructed by the Nikheel properties which is the real estate companies achieved many big projects. It is considered one of the challenging projects of Dubai. Dubai ’s Palm Islands are made from all natural materials like rock
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Soil degradation refers to the decline in quantity and quality of soil. Degradation of soil is done by erosion (wind and water)‚ biological degradation‚ physical degradation (referring to the over loss of structure and changes in permeability) and chemical degradation‚ this refers to acidification‚ declining fertility‚ changes in pH levels‚ salinization and chemical toxicity. Soil degradation affects not only the environment but also the economy as well as people. The effect that soil degradation
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The soil used in this experiment is Kaolinite clay‚ which has Cv = 8.69 sqm/year at 300 kPa (hydraulic result) and Cv = 2.98 sqm/year at 288 kPa (manual result). This result then would be compare with some theoretical calculation by using the isochorne plot. Introduction Oedometer test is test to present and measure the consolidation of a soil. Consolidation is a process when an external load is given at the top of a saturated soil which will cause the water to be squeezed from the soil and
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Recommended Methods for Determining Soil Cation Exchange Capacity Donald S. Ross and Quirine Ketterings The cation exchange capacity (CEC) of a soil is a measure of the quantity of negatively charged sites on soil surfaces that can retain positively charged ions (cations) such as calcium (Ca2+)‚ magnesium (Mg2+)‚ and potassium (K+)‚ by electrostatic forces. Cations retained electrostatically are easily exchangeable with cations in the soil solution so a soil with a higher CEC has a greater capacity
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Introduction Soil erosion is one form of soil degradation along with soil compaction‚ low organic matter‚ loss of soil structure‚ poor internal drainage‚ salinisation‚ and soil acidity problems. These other forms of soil degradation‚ serious in themselves‚ usually contribute to accelerated soil erosion. Soil erosion is a naturally occurring process on all land. The agents of soil erosion are water and wind‚ each contributing a significant amount of soil loss each year in Ontario. Soil erosion may
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FIELD AND LABORATORY TESTS 8 6. SAFE BEARING CAPACITY 9 7. CONCLUSIONS AND RECCOMENDATIONS 10 1. Abstract: The appropriate scope of a geotechnical investigation is a function of the type of proposed land use or project‚ the soil/ geologic conditions of the project site‚ and type of permit or approval sought. The geotechnical consultant is responsible for targeting the scope of their investigation‚ testing‚ analyses‚ and documentation to balance these factors. References are
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Dispersive Soils Group Members: 1. Elsie Phelane 2. Keeme Sephikwe 3. Lawrance Mabasa 4. Lethlogonolo kotsedi DISPERSIVE SOILS INTRODUCTION Dispersive soils are associated with residual granites‚ granodiorites‚ mudstone and sandstone as well as fine-grained transported soils such as alluvium deposits. Dispersitivity is found in clay‚ silty and sandy soil. Dispersible soils tend to be highly erodible and present problems for successfully managing earth works. It is an indicator of sodic soils as
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Geotechnical Engineering Practice | August 19‚ 2012 1 The origins of soil deposits on the earth’s crust can reveal significant findings in the chemical and mechanical characteristics of the soils themselves. It is important to uncover such origins to find how and where such deposits may have formed over tens of thousands of years ago. Marine and Lacustrine deposits are two soil types that are commonly encountered during soil exploration‚ both of which are primarily traced back to either glacial
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