ATOC 184 Lecture 11: 2_20_2018
9 Jul 2018
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Mount sinabung in sumatra, indonesia: erupts fairly often, pyroclastic flow. Cyclone kevin: cyclone over australia, we can tell its over australia because of the different direction of the spiral, the cyclone went over the desert, so this was a rare moment of rain in that area. Extreme chemical weathering leaches the soil and regolith (heat and water required) Western united states have fertile soil (due to deposits of sa(cid:374)d fro(cid:373) the i(cid:272)e age) (cid:271)ut the(cid:455) do(cid:374)"t have enough water: central pivot irrigation is the cheapest most effective irrigation system, creates circular plots of crops. Consequences of groundwater withdrawal creating aquifer depletion in areas where there just is(cid:374)"t (cid:373)u(cid:272)h water. If evapotranspiration and irrigation are roughly equal, then salt tends to build up in the surface soil. Ex: australia with inland salt water lakes, one on slide turned pink from salt-loving bacteria.
