301-pp2 - 1 GY 301: Geomorphology GY 301: Geomorphology...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 GY 301: Geomorphology GY 301: Geomorphology Lecture 2: Topographic maps part 2; Transit Surveys UNIVERSITY OF SOUTH ALABAMA Last Time 1. Course Info 2. Introduction to topographic maps 3. Dougs inability to tell time Topographic Maps Know your enemy! Scale (Relational Fraction; Graphical) Elevation contours (Relative to M.S.L) Boundary (Latitude & Longitude) Color (Water bodies, Woodlands, etc.) Cultural Features (man-made features) Scale At the bottom of the map; two types 2) Relational Fraction (RF) 2) Relational Fraction (RF) 1) Graphical 1) Graphical Elevation Contours Contour lines ( Brown ) Based on aerial photographs analyzed stereographically Must agree with benchmarks and spot elevations Contour interval: elevation change between adjacent contours Hachured contours indicate closed depressions ht p:/ www.jesseshunting.com/images/topo-bench-saddle1.jpg Topographic Map Boundaries Always consist of lines of latitude and longitude Contain tick marks of UTM and SPCS on the border 32 7 30 32 15 103 22 30 103 30 32 7 30 32 15 103 30 103 22 30 7.5 Topographic Quadrangle border (1:24,000) 2 Todays Agenda 1. Finish introduction to topographic maps 2. Dougs inability to tell time Topographic Map Colors Brown : topographic contours Green : Forest and/or wetlands White White : cleared areas (i.e. pastures, etc.) Black: Cultural features (buildings, roads) Red : Land office grid system (Township & Range system); Major road systems Magenta : Photo-revised areas Blue: water bodies Topographic Map Examples Map Coordinate Systems Land Office Grid system (Township & Range) Universal Transverse Mercator (UTM) State Plane Coordinate System (SPCS) Land Office Grid System T1N T2N T1S T2S...
View Full Document

This note was uploaded on 02/05/2012 for the course GLY 301 taught by Professor Staff during the Fall '10 term at S. Alabama.

Page1 / 7

301-pp2 - 1 GY 301: Geomorphology GY 301: Geomorphology...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online