AR246 Lecture Notes - Lecture 4: Crescent Dunes Solar Energy Project, Periglaciation, Suspended Load
2 Jan 2018
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Document Summary
90 marks 1 hour material thus far in lectures and reading as well as climate module. January 26, 2016: barchans, crescent dunes, result from blowout on the lee side, dune shape depends on the wind (speed, direction turbulence) and landscape, erg, dunefield. January 26, 2016: heavier particles rolled along bottom, capacity of water to move sediment depends on current velocity, high velocity currents bear more/ larger particles, as velocity reduces, results in precipitation of sediment. January 26, 2016: confluence of lower orders, e. g. low order channels, small, high elevation. Lithosphere i. e. basal water freezes into cracks in bedrock: pulled apart as glacier moves leading edge of glacier, plows up regolith, glacial melt, cryospheric features, deposits quantities of sediment. Impact of animals (including humans) are usually on plants: e. g. deforestation/ overgrazing, erosion denudation of landscape, development of deep erosion channels, wadis, arroyos. Increased sedimentation rates: direct anthropogenic modification of landscape, e. g. agriculture, terraced fields.
