GEOG 441 Study Guide - Midterm Guide: International Date Line, Martian Dichotomy, Magma Chamber
Document Summary
Major findings during the excellent 1877 mars opposition. Orbit characteristics: (semi) major and (semi) minor axes, eccentricity, perihelion and aphelion. Rotation characteristics: tilt of the rotational axis (obliquity) and what it has to do with seasonality. Fractionation of magma in a magma chamber, why earth"s continents are granitic and its ocean floors are basaltic. Alteration of rocks and minerals through interaction with water or ice. Resolution: spatial, vertical, spectral, radiometric, directional, temporal. How earth"s conventional geographic grid works (n/s, prime meridian, numbering of. The most common system used today on mars with + and - for north and south and 360 of longitude, running east (easting) -- be able to convert between the earth system and the mars systems. A still-used alternative geographic grid, n/s = +/-, but longitude runs west (westing) Understand how reference spectra can help identify rocks and minerals that a spectrometer on an orbiter or rover reads.
