GEOG 2051 Chapter : GEOG 2051 Jan 31
Document Summary
Remote sensing: satellites (geostationary, polar- orbiting, collecting data w/out physical contact, reflected + emitted energy, electromagnetic radiation + spectrum, sensors (passive, active, platforms (ground, plane, stellate) Gis: geographic information systems, digital maps, layers/ converges, rapid analysis, expansion of previous abilities. Geologic time scale- precambrian + phanerozoic / quaternary + holocene. Ex: with c14 and n14= 1 half-life 50% c14 and 50% n14. 1 half-life 25% c14 and 75% n14. 1 half-life 12. 5% c14 and 18. 5% n14. Present is the key to the past we should use the operation of the natural world as a template for how things worked in the past. Gradualism- the notion that many of the process in the natural world operate very slowly compared to human time. Found lower monumental dam ripples showing that years ago a larger river ran through as a result of the missoula flood.
