GEOG 106 Lecture Notes - Lecture 6: Persistent Organic Pollutant, Radioactive Contamination, Plate Tectonics
Document Summary
The circulation of the lithosphere and human impact. The circulation of lithosphere is slow comparing to the others. The energy for this activity comes from within the earth (endogenous energy) The energy is comprised of: heat derived from the formation of the earth as well as, heat released from the continuing decay of radioactive elements within the. The circulation of lithosphere: constructive volcanic activity, folding and faulting, deposition, distractive weathering and erosion, plate tectonics. Human transformation of lithosphere trench: accelerating or decelerating natural flows, Human impact: weathering release co2 to the atmosphere, erosion exposure of soil to wind and water. Relating to development, agriculture, mining ect: deposition eg) reservoir sedimentation. Case study: linking contamination of the arctic with global circulation systems. Measuring industrial and agricultural chemicals in the artic, which are drifted from different landscape. 3 classes of contaminants it can travel long distances by wind or water. Radionuclides unstable adams that are subject to radioactive decay.
