Reading Latitude And Longitude On A Topographic Map
For example see the Coordinates under the topo map of Hex Mountain. Geologic maps also have latitude and longitude marked along the edges of a map as a way to help locate positions on the map.
There Are Many Ways To Plot Points On A Map Using Latitude Longitude This Section Describes One Method The Grid System Map Map Coordinates Latitude Longitude
Latitude-Longitude and Topographic Maps Reading Supplement Latitude and Longitude A key geographical question throughout the human experience has been Where am I In classical Greece and China attempts were made to create logical grid systems of the world to answer this question.
Reading latitude and longitude on a topographic map. At best one degree of latitude and longitude would define a 70 square mile area. You would read it as 35 degrees 15 minutes north latitude and 111 degrees 30 minutes west longitude. Before you can understand how to read a topographic map you will be introduced to maps in general including simple hand drawn.
Those coordinates can be entered into a GPS as a destination waypoint. Latitude and longitude are written at each of the four corners of a USGS topographic map. US Topo map showing latitude and longitude of the corner 38N -1158750W and brown UTM gridlines 4206000 meters northing and 599000 meters easting.
So if 1 degree equals 70 miles and one degree can be divided into 60 minutes then 1 minute equals 12 miles. To overcome this problem 1 degree is divided further into 60 minutes. Contour lines measure distances read longitude and latitude and locate objects and landmarks using the same coordinate system used by land surveyors and geologists.
To read it start with the first set of numbers or the latitude. The numbers next to the tick marks indicate degrees minutes and seconds. 1 degree 70 miles 1 12 miles 1 02 miles If you look at the picture above you will notice the latitude and longitude in the lower right hand corner of the map.
It will help you to use latitude and longitude more effectively. Latitude and longitude are measured in seconds minutes and degrees. Below the title you will notice the words 75 minute map.
That line reads 41 degrees 56 minutes 543732 seconds north. Longitude is the distance east or west of the prime meridian Greenwich England. The latitude of the southern extent of the map is written at.
Topographic maps do not show the latitudelongitude lines just the tick marks. In an earlier chapter we learned about Latitude and Longitude on topographic maps. See full answer below.
You would read it as 35 degrees 15 minutes north latitude and 111 degrees 30 minutes west longitude. 60 seconds 1 minute 60 minutes 1 degree To determine the latitude and longitude of your. Latitude and longitude lines are indicated with fine black tick marks along the edges of the map Figure 2-8.
This means that the map covers an area of approximately 75 minutes of latitude and longitude. HOW TO DETERMINE LATITUDE AND LONGITUDE FROM TOPOGRAPHIC MAPS Latitude is the distance north or south of the equator. Topographical Map Representation of Longitude and Latitude Because of its popularity topographical maps almost always contain longitude and latitude values expressed in degrees minutes and seconds.
In this sample map the right hand longitude is listed as 121 degree 30 minutes and 0 seconds zero is assumed and not explicitly printed. The longitude reads as 87 degrees 39 minutes 192024 seconds west. All of the points of interest pages on TopoZone have coordinates latitude and longitude in the information section below the topo map.
All geologic maps will also include scale.
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