topographic maps. contour lines a line which connects points of equal elevation. index contours:...

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Topographic Maps

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Page 1: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Topographic Maps

Page 2: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Contour linesA line which connects points of equal elevation.Index Contours: Thick contour lines which have the elevation written on them.

Page 3: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Page 4: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Contour line properties:Contour lines never cross.The closer the lines the steeper the hill.At valleys, contour lines form “V”s which always point up hill.

Page 5: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Page 6: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Contour IntervalThe vertical distance between adjacent contour lines.

Ratio Scale

Graphic Scale

Page 7: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Benchmarks – Spot ElevationsA benchmark: a mark on a topographic map and the earth which shows elevation to the nearest foot. (BM 377)Spot Elevations: elevations measured at road crossings or tops of hills. (.1127 or X1127)

Page 8: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

Latitude and LongitudeLatitude and Longitude are measured in degrees. °1 degree = 60 minutes. 60’1 minute = 60 seconds. 60”Example 44° 30’ 15” N , 92° 15’ 54” W Found in the corners of topo. maps and along the edges.

Page 9: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

LatitudeParallel lines which indicate angles North and South of the equator.Equator 0° LatitudeNorth pole 90 ° N LatitudeSouth pole 90 ° S Latitude

Page 10: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

LongitudeMeridians measuring angles East or West of the Prime meridian.Prime meridian 0 ° long.International Dateline 180 ° long.

Page 11: Topographic Maps. Contour lines A line which connects points of equal elevation. Index Contours: Thick contour lines which have the elevation written

L a ti tud e / Lo ng itu de

6 0 S e con dsT h ere a re 60 S e co n ds in ev ery m inu teT h ere a re 36 0 0 secon ds in o ne d e gree

6 0 M inu tesT h ere a re 60 m in u te s in o ne de gree

O n e D eg ree

Isolines: contour lines on an elevation map Isotherms: contour lines on a temperature map Isobars: contour lines on an air pressure map

Contours - WordPress.com fileContours The contour line is a line on a plane that connects all points of the same elevation. The basic rules of contours: Contour lines never cross

Contour Line Drawing contour lines - Lines that surround and define the edges of a subject, giving it shape and volume. When you draw lines curving around

Isolines and contour lines

Name · Web viewA hachured contour line, lying between two different contour lines, is the same elevation as the lower contour line. 11. Where two adjacent contours indicate opposite

Still Life. Contour Line Drawing Using only lines to draw an object. Draw all of the elevation and the important detail

Topographical Maps. Topo Basics Topo maps have “Contour Lines”. The contour lines show the elevation of the ground at each area of the map

Contour lines by sk

Using R as a GIS - satrdays.orgCreating GIS data in R Example: Create topographic contour lines as GIS vectors using elevation data from google API. Input Data: Google Elevation API

Exercise 3 CONTOURS, SLOPE AND ASPECT MAPPING Map A€¦ · NOTES: 1. Construction of a contour map from elevation data: Given: contours are lines of equal elevation (known points)

CONTOUR LINES BASICS Contour lines are lines drawn on a map connecting points of equal elevation. If you walk along a contour line you neither gain or

Contour Line Drawing Intro - Central Bucks School District€¦ · Understand the meaning of contour lines. Understand the function of contour lines in drawings. Apply new knowledge

Earth Mapping and Plate Tectonics Test …...Line that connects areas with same elevation Elevation change between contour lines 40 ft. 2 4,800 ft. 4,920 ft 5,040 ft. Earth Mapping

TOPOGRAPHIC MAP A MAP WHICH SHOWS ELEVATION OF THE LAND WITH THE USE OF CONTOUR LINES, SHAPES, AND SYMBOLS CONTOUR LINES LINES DRAWN TO CONNECT POINTS

LiDAR Derived Contour Lines Sample Data - parlidar.com · Elevation Contour Lines GIS Analysis Levee Elevation Data Pipeline/Power Line/Railroad Corridor Mapping Planimetric Mapping

Contour Plots for Slab Elevation Data usingData using MathCAD

Weebly · ing apart ever since. See plate tectonics. contour interval The elevation difference represented by the difference between two adjacent contour lines on a topographical

Objectives: -Explain how topographic maps use contour lines to show elevation

· Web viewBy comparing the map elevation contour lines against the independently created contour lines from the ASTER DEM the accuracy of the geo-rectified map was tested. The high

- show topography or using elevation contour lines Topic: Topographic Maps

Contour drawing. To create a contour drawing we are using only contour lines. Contour lines are lines that describe the edges and surfaces of objects

Cross Contour Lines

Topographic Maps. Topo Maps ► Topographic maps : show elevation of the land using contour lines. takes 3D landscapes and represents them in a 2D fashion

TOPOGRAPHY. What is a Topographic Map? Earth's surface shape shown by contour lines Contour lines - lines connecting points of equal elevation measure

Topographic Maps Topographic Maps: ____________ ______________________________ Contour Lines:________________ _____________________________ Contour Interval:_______________

ACCURATE & ADVANCED - delair.aero · 3D point cloud (colourised with camera data), DTM (Digital Terrain Model), DSM (Digital Surface Model), Contour Lines, Cross Sections, Elevation

Checking in…(p167) 1. How do contour lines show elevation, slope, and relief? 2. Why do contour lines never cross on a topographic map? 4. For an area

Contour Lines. Definition A contour line is a line that passes through points having the same elevation.* *Surveying, 10ed, Moffit & Bossler

Using Contour LinesContour lines Index contour Elevation Tour stop Distance between contour lines = 40 feet Distance between index contours = 200 feet N S W E California Yosemite National

Contour Plots for Slab Elevation Data using MathCAD

AXIAL LINES AND CONTOUR LINES: 094 - İTÜ - Cutini.pdf · AXIAL LINES AND CONTOUR LINES: climbing up the centre 094 Valerio Cutini University of Pisa Valerio Cutini Abstract The

Preliminary groundwater elevation contour maps

Contour lines. Contour lines: curved lines drawn on the map, connecting points having the same elevation

GRADE 9 MAPWORK and landforms.pdf · CONTOUR LINES •Contour lines connect places of equal altitude •Contour lines depict various landforms on a map •By “reading” the contour

Contour Lines and Cross-Sections