GPS & THE PUBLIC RESOURCES CODE Steven J. Martin Survey Supervisor‚ EBMUD PERTINENT PUBLIC RESOURCES CODE SECTIONS 8801-8819 The Definition and Use of the California Coordinate System 8850-8861 Geodetic Datums and the California Spatial Reference Network 8870-8880 California Geodetic Coordinates of 1983 8890-8902 California Orthometric Heights of 1988 This here PRC says there is something called a COH88 out here somewhere… Let’s skip that one Chief! The Definition and Use of the
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A topographic map is a map that shows the actual shape of the landscape and the various heights of the landscape. The map allows geographers to see the height and shape of the land by using contour lines. Contour lines are lines that join together all points that have the same height above sea level. The height between contour lines is called the contour interval. The map on the opposite page has various contour lines with an interval of 50 metres. The numbers on the contours show how high the land
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Chapter 3 Review Questions 1. List four questions about map objectives that would influence the design of a map. What am I making this map for and what am I trying to acomplish? Who will be viewing? Why will it be used? Is there privacy issues surrounding the project? 2. What factors should be considered in evaluating the balance of a map? Placement of features‚ the size of features‚ alignment of features‚ usage of space 3. What types of colors generally work best for maps? How can the psychology
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How maps influence our perception of the world Maps have a great influence on our individual perception of the world. Some people maintain this point of view while others argue with it. As far as I’m concerned‚ I support the first issue. On the one hand‚ many people suppose that maps have a good impact on our perception of how the world works. Firstly‚ they say‚ it helps to form our worldview. And in its turn this is useful for our range of vision‚ development. Secondly
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Name:_____Jessica Stacy___________________ This assignment is worth 20 points; answer the following questions about Lab 9: Topographic Maps. Type your answers in the space provided‚ make sure I can clearly read/find your answer. If you like‚ use a different color for your answers (makes it easier to read). Check the due date in your email and on the Pearson website‚ email me once you have completed the assignment. Define these terms: 1. Topographic map – 2D Map made of contour lines of landscapes
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CGC-1D1 Exam Notes Geography Levels of Geography • Me → personal space • Local → Oshawa • Regional → Durham • Provincial → Ontario • National → Canada • Worldwide → Global Five Focus Areas for Geographers 1) Why things are located where they are. 2)Geographical systems; that shape our world. 3) Interactions between people and the environment within they live. 4) Global Connections; between regions and other countries. 5) Special tools and skills geographers use (like mapping
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Review 4 Types of data in GIS: spatial‚ attribute‚ temporal‚ and metadata. Last week we covered attribute data Today‚ we will cover spatial data—specifically georeferencing‚ map projections and coordinate systems‚ and geocoding. Next topic Geographic Representation & Vector Data Model Lecture 03: Georeferencing GIS6100 Downs 1. Spatial Information 1. Spatial Information 3 main categories References Properties Relationships 1. Spatial Information
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GPS and GIS are two pieces used in technology by geographers. GPS stands for Global Position System. A GPS finds the precise location of something of someplace on earth. In the US there are three parts of a GPS. The first part of GPS is the satellites. There are multiple orbiting satellites over the earth placed by the US military. The second part of GPS is the tracking stations. There are tracking stations that control and monitor satellites. The third part of GPS is a receiver. A receiver locates
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The Gall-Peters projection and the Mercator’s projection were both clearly made for 2 different purposes. Both made by 2 different men‚ and at different times. The image of the word “map” that we have in our mind is very limited. We only know as much as it is commercialized. We don’t know what the reality is. Arno Peters and James Gaal made an attempt at trying to fulfill that reality and were recognized in the late 20th century. An equal area map that’s main purpose was to portray the Earth to it’s
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GPS vs. GIS Global Positioning System (GPS) is a system that accurately determines the precise position of something on Earth. GPS is a constellation of twenty four satellites‚ each of which orbits Earth once every twelve hours. The U. S. Department of Defense operates and maintains these Global Positioning System satellites. Each satellite contains a high precision atomic clock and several transmitters that constantly send radio signals back to Earth. These signals communicate the satellite’s
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