Significant wind erosion occurs when strong winds blow over lighttextured soils that have been heavily grazed during periods of drought. An educational programme for the subject wind erosion. Yardangs, iran result from wind erosion of partially lithified dunes. The large parallel sand dunes in southwest queensland, including the simpson desert national park, are the result of wind erosion and deposition over. Chapter 3 agents of erosion and deposition section 1 shoreline erosion and deposition 1. Wind causes small particles to be lifted and moved away. Waves remove sand from shorelines during erosion and add sand during deposition. The game supports students understanding of wind erosion. Erosion takes place along the bands of the meander.
Identifying areas sensitive to wind erosiona case study. Loess can be found far from its source because it is fine and can be carried. Wind erosion and deposition can form sand dunes and loess deposits. After reading this article you will learn about wind erosion. The main features deposited by wind are sand dunes. Deposition by wind read earth science ck12 foundation. Simpson desert national park, are the result of wind erosion and deposition over thousands of years. Dust storms like the one in figure above are more common in dry climates. Characteristics of erosion and deposition of straw checkerboard.
Streams and rivers this unit contains resources about streams, how they modify the landscape, and flood hazards. Questions relate to the evidence of wind erosion and deposition sand dunes, wind blasted rock, locations where wind erosion is a dominant force, diagr. These documents should be referred to and used for all data recording and submission as part of network activities. Sand dunes usually form when the wind strikes an obstacle and slows down. Chemical weatheringany process that causes rocks to breakdown by chemical action results in a change in composition. Wind erosion and deposition earth science socratic.
Wind erosion is a natural process that moves soil from one location to another by wind power. Vocabulary abrasion when a rocks surface are reduced in size by friction when particles are transported by wind. Locke ww iii, andrews jt and webber pj 1979 a manual for. This page provides access to all manuals, data recording sheets and documentation for the national wind erosion research network. These dunes are often found in the desert and on beaches. Sand sheets these are flat areas of sand with sand grains that are too large to saltate.
Introductory material on the agents of erosion is available in the erosion unit. Wind erosion and deposition wind erosion and deposition erosion erosion is. Wind transports and deposits sediments to create features like sand dunes and loess deposits. Wind erosion section of textbook science journals half of a straw h1 wind erosion notes advance preparation 1. Section 1 weathering and soil formation main idea many factors, such as weathering, climate, and time, affect soil formation. Features produced by wind deposition alevel geography. The wind erosion prediction system click here to download weps and sweep researcherdeveloper public release click here to download weps nrcstsp configuration detailed overview of weps pdf format requires a pdf reader a history of wind erosion prediction models in the usda. Data are available for download from the dryad digital reposi. Wind erosion can be caused by a light wind that rolls soil particles along the surface through to a strong wind that lifts a large volume of soil particles into the air to create dust storms. Spatiotemporal dynamics of snow erosion, deposition and horizontal. Wind erosion wind deposition the sediment carried by wind can form sand dunes and loess deposits. Section 2 erosion of earths surface main idea all agents of erosion, such as gravity, ice, wind, and water, change earths surface. This is because when wind slows down, most likely because of an obstacle such as a heavier rock, that obstacle can trap the sediment that is windblown.
Cut out each piece on the two pages and staple together to form a flipbook. Wind can carry small particles such as sand, silt, and clay. The best videos and questions to learn about wind erosion and deposition. High school earth sciencewind erosion and deposition. In the wind tunnel setting of these experiments we observe a balance between erosion and deposition at low wind speeds, while erosion is. Erosion and deposition by wind earth science in maine. Erosion the process by which wind, water, ice, or gravity transports soil and sediment from one location to another. Wind speed and the length of time the wind blows aremajor factors in wind erosion. The critical wind erosion period is that part of the year when agricultural fields are particularly vulnerable to wind erosion. Particle dynamics are described in terms of suspension, saltation, surface creep, abrasion, sorting and threshold conditions.
Weathering wears down rocks and other substances on the earths surface. Pdf principles of wind erosion and its control researchgate. Dunes migrate by erosion of sand by the wind on the gentle upwind slope and deposition. Wind deposits form when a topographic barrier causes a drop in wind velocity on the downwind side of the barrier. Use the information provided in the book to answer the questions on the last page. Erosion is the movement or transport of particles, but it does not involve the settling and accumulation of particles in a new location. Ppt wind erosion powerpoint presentation free to download id.
Prepare traysbox lids with layer of sand and 2 rocks placed inside each traylid. Sand dunes a pile or mound of sand created by the wind and the deposition of sand that was eroded from another location. There are both multiple choice and short answer questions. Loess is a very fine grained, wind borne deposit that can be important to soil formation. Recently, the importance of wind erosion has been reevaluated.
Why is wind erosion more important in arid regions than humid areas. Deserts, wind erosion and deposition by definition, a desert has less than 10 in 25 cm of precipitation per year. Request pdf wind erosion wind erosion refers to the detachment, transport, and deposition of sediment by wind. This worksheet has 16 earth science regents questions about wind erosion and deposition. It is a dynamic, physical process where loose, dry, bare soils are transported by strong winds. Notes on the 2 types of soil erosion water erosion and wind erosion science, geology, wind, transportation and deposition by wind difference between deflation and abrasion action of wind. Wind erosion and deposition wind erosion and deposition erosion erosion is the process that transports earth s weathered materials from one place to another by wind. It can cause significant economic and environmental damage. The adobe flash plugin is needed to view this content. Wind erosion is one of the main processes controlling the functioning of the earth system. Wind sediments that have been transported by wind appear pitted holes and frosted glazed effective in moving small, loose material occurs in areas where there is not enough rainfall to support vegetation main effects.
Landforms from wind erosion and deposition read earth. Deposition is responsible for creating sand dunes and some mountains. Wind is the weakest agent in shaping the land, but can be powerful in shaping the land in areas where there are few plants to hold the soil in place. For this lab, you will only need soil or sand, pans, water, and straws.
Causes of wind erosion bare, unprotected soil is extremely vulnerable to wind erosion erosion occurs with strong, turbulent winds blowing across a soil surface that. When wind strikes an obstacle, a sand dune is usually the result. Yet wind can be a powerful force in shaping the land in areas where there are few plants to hold the soil in place. Wind erosion and airborne dust deposition in farmland.
Wind erodes sediments to form terrain features, especially in the desert. It occurs when sediments and other shoreline materials are picked up and moved away from the coast by water, wind, ice or gravity. Erosion deposition measurements and windsand observations for different specifications 1 m. Winds may erode, transport, and deposit materials and are effective agents in. Once the small pieces of rocks are changed or broken apart by weathering, they may start to be moved by wind, water, or ice. Deposition creates landforms such as alluvial fans. Susceptibility to wind erosion is related rather definitely to the moisture content of soils. On mars, with billions of years of only wind erosion, wind has had much greater effects. Basic wind erosion processes are discussed under the major headings of soil particle dynamics, particle flow rates, and principles and general strategies of control. Wind erosion and deposition science project by ryan huang. Even though wind is the weakest agent, it is still a powerful force in shaping the land near areas where there is little plant growth. Author links open overlay panel fengrui li a liya zhao a hua zhang a tonghui zhang a. Winddeposited sand bodies occur as sand sheets, ripples, and dunes.
Deposition the dropping off or depositing of eroded rock. Surfacerunning water well actually come back to this topic in the. The process by which particles accumulate in a new location is called deposition. Characteristics of wind erosion and deposition in oasisdesert ecotone in southern margin of tarim. Deposition sediment is laid down in new locations weathering, erosion, and deposition work together in. Wind erosion refers to the detachment, transport, and deposition of sediment by wind. Characteristics of wind erosion and deposition in oasisdesert. Ventifact is a wind feceted cobble or pebble loess silt and claysized particles are deposited by wind in wetter regions. Physical weatheringany process that causes a rock to crack or break into pieces without changing it 2. Weathering, erosion, and deposition weathering weatheringthe breakdown of rocks into soil types of weathering. Pdf on jan 1, 2009, john tatarko and others published principles of wind. This is a unit about erosion and deposition of sediments associated with streams.
Result from wind erosion of partially lithified dunes. Wind erosion abrades surfaces and makes desert pavement, ventifacts, and desert varnish. By definition, a desert has less than 10 in 25 cm of precipitation per year. Coastal deposition is the opposite of coastal erosion. Tables listing the prevailing wind erosion direction by month for many locations in the united states are available see nrcs weq web site address at the end of this document. Water, waves, moving ice, and even mass movement have more effect on the land. Wind erosion and airborne dust deposition in farmland during spring in the horqin sandy land of eastern inner mongolia, china.
Abrasion by wind carried sand can polish rock, but causes little erosion. Wind erosion and deposition erosion and deposition. Earth science erosion and deposition all modalities. Sand dunes have coarse grained sediments, loess has finer sediments, both are caused by wind erosion. Erosion by wind read earth science ck12 foundation. Use this lab activity with your students to see the effect that wind can have on the shape of the earth. Agricultural land is significantly affected by wind erosion, which leads to soil quality. Dry, bare soil is more easily blown away by the wind than wetter soil or soil held in place by plant roots.