GEG 2320 Study Guide - Midterm Guide: Equipotential, Tide Gauge, Robinson Projection

• School: University of Ottawa
• Department: Geography
• Course: GEG 2320
• Professor: Saied H.

Document Summary

Geomaics technique and technology of collecing, archiving, processing, analysing, publishing and managing of geographic informaion. Geomaics problems framework: data is collected and assessed, posiional control, uncertainty and quality assessment, data modiicaion and conversion, fusion and integraion, analysis and processing, visualizaion and publicaion. Geospaial refers to the space of the earth"s surface, subsurface or above surface. Scale scale can deine size, details, accuracy, technology, ime, cost . Vector represents eniies with clear boundaries; uses points, lines or polygons. Advantages: small amount of data, easy to update, logical data structure. Disadvantages: coninuous data not represented, requires manual ediing. Raster represents occurrences which are coninuous in nature; represented in grids and cells. Geoid the equipotenial surface of the earth"s gravity ield which best its the mean sea level. Mean sea level calculated using observaions by ide gauge in coastal zones. Ellipsoid representaion of earth"s shape that allows posiioning of each feature. Spaial reference system (srs) deines a speciic map projecion geodeics.