Title: Project 4
1Project 4
Mississippi Coast Before and After Hurricane
Katrina
2Landsat Information
- The Landsat program is the longest
running program for acquisition of imagery of
Earth from space. The first Landsat satellite was
launched in 1972 the most recent, Landsat 7, was
launched on April 15, 1999. - Landsat 5 is the fifth satellite of the Landsat
program. It was launched on March 1st, 1984, with
the primary goal of providing a global archive of
satellite photos. The Landsat Program is managed
by USGS, and data from Landsat 5 is collected and
distributed from the USGS's Center. - Landsat 7 is the latest satellite of the Landsat
program. It was launched on April 15th, 1999. The
primary goal of Landsat 7 is to refresh the
global archive of satellite photos, providing
up-to-date and cloud free images. Although the
Landsat Program is managed by NASA, data from
Landsat 7 is collected and distributed by the
USGS. The NASA World Wind project allows 3D
images from Landsat 7 and other sources to be
freely navigated and viewed from any angle
3Unique Qualities
- Takes clear pictures of earth from 570 miles out
in space. - Follow instructions from computers down on earth.
- Work in the extremely cold temperatures in space.
- Last for many years.
- It takes pictures only in the day time. That
makes sense since using a flash camera from 570
miles away just won't work - Each full picture it takes equals 13,000 square
miles. That is an area about 115 miles long by
115 miles wide. - Landsat can also look at smaller areas of the
earth. How's this for small? 210 square feet
which is about 14 1/2 feet by 14 1/2 feet. - Landsat completes a full orbit around the earth
every 103 minutes. - LANDSAT takes 16 days to take its pictures of the
entire earth. Then it begins taking pictures all
over again.
4How does Landsat work?
- High scale photos from satellite imagery
- Uses a mirror that scans a particular section of
land. Light is radiated from the ground bounces
off of mirror onto a series of 4 light detectors.
- Form of pixels beyond human wavelength spectrum
Landsat Satellite
5Application
- Landsat data can be used by government,
commercial, industrial, civilian, military, and
educational communities worldwide. - The data support a wide range of applications in
such areas as global change research,
agriculture, forestry, geology, resource
management, geography, mapping, water quality,
and oceanography. - Landsat consistency over three decades offers
opportunities to compare land cover changes over
time. - Valuable for emergency response and disaster
relief. Advances made in data reception and
processing permit rapid access to imagery in
times of natural or human-made disaster.
6Using the EarthExplorer Software
http//earthexplorer.usgs.gov
7Upon accessing the site sign yourself in under
GUEST
8Click on ENTER PLACE NAME
Once you hit search the coordinates will show up
in the previous screen
Enter the City Name and then Select the State
9Scroll down the Data Set Selection and click on
the Landsat 7 ETM
10Allow this screen to load (it refreshes itself
every 10 seconds)
11- Choose the most recent photo with the least
amount of cloud cover - Click Show to see your image
- To get your metadata click on show all fields
12Metadata
13For Prices Click on the Prices Option at he top
of the page
14Click on Landsat ETM
15After completing the EarthExplorer program you
will have all the components necessary to
complete your project webpage.
16Sources
- http//earthexplorer.usgs.gov
- http//campus.esri.com
- http//landsat.usgs.gov/history.html
- http//library01.gsfc.nasa.gov/gdprojs/images/land
sat.jpg