GEOG 2050 Chapter : Chapter 6
Document Summary
Tambora: eruption 1815, volcanic explosively index (vei) 7 (1-8, 1816 the year without a summer atmosphere. Pinatubo erupts: june 1991, 2nd largest eruption in 20th century vei=6. Air pressure: molecules in air create pressure, gas laws, p=rpt, p=pressure, t=temperature, p=density & =mass/volume, r=gas constant. Air pressure readings: lowest in us, 882 mbar, typhoon tip oct. 1979, hurricane wilma 2005, earth"s record low, 870 mbar, earth"s record high, 1084 mbar, highest in us, 1065 mbar, barrow ak jan 1970, siberia, dec 1968. Wind: movement of air, measured speed, anemometer, miles per hour (mph, kilometer per house (kmph, meters per second (mps, knots (nautical mile/hour) Wind direction: measure direction, wind vane, 10m (33 ft) above surface, meteorology direction the wind is from, westerly wind from the west, degrees from north, westerly wind is 270o. Ix: developed in 1806 by sir francis beaufort of england, describe wind from wave observations, developed later for land.
