Welcome to Methods 3, Lecture 12

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Methods 3

thinking ahead to presentations

thinking ahead to presentations (12/8)

plan on sharing how you're applying what we've covered in class

it's assumed that you will be showing a work in progress

20 minutes

I encourage you to make slides

screenshots of your process can be useful, too

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form is in Canvas, feel free to work ahead on this

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it's common to work on multiple maps for one project

Jakob Winkler
Jakob Winkler
Jakob Winkler
Jakob Winkler
Abby Zan
Abby Zan
Abby Zan
Abby Zan
Eduarda Aun
Eduarda Aun
Eduarda Aun
Eduarda Aun
Eduarda Aun
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"I don’t want politicians to see these tiny libraries and think, ‘Oh, we don’t need the big public libraries.'"

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how could we prove or disprove this?

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remote sensing

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1858, Paris
1868, Paris
1906, San Francisco
1906, San Francisco
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Neubronner, 1908
Neubronner, 1908

Landsat

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the longest continuous satellite imagery collection program

Landsat is "earth observing", as opposed to people observing (spying)

1972: first Landsat satellite launched

1985: Landsat is privatized, run by Hughes and RCA

2001: Landsat fully returned to public hands

2007: all Landsat imagery becomes free

2013: Landsat 8 launched

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Landsat imagery is used for:

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resolution: how much area on the ground is represented by one pixel

if a satellite has 30m resolution, each pixel represents a 30m x 30m square

a smaller number for resolution is better

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temporal resolution

how frequently does the satellite take a picture of a given location?

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bands

satellites produce a number of images at different wavelengths

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bands 2, 3, and 4 (blue, green, and red)

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band 5 (near infrared)

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band 6 and 7 (shortwave infrared)

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band 9 (clouds)

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you will combine bands to suit your needs

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LiDAR

light detection and ranging

LiDAR actively uses lasers and sees how long it takes for a reflection to arrive

like SONAR (sound) and RADAR (radio waves)

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