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Thursday, December 25, 2014

Crying: Acceptable at funerals and the Grand Canyon


Landsat 8 True color composite mosaic created from imagery dated 9-30-14 & 11-25-2014
Grand Canyon, AZ
Over 5 millions people go to sight-see the Grand Canyon every year. The Grand Canyon is 277 miles long, up to 18 miles wide, and is over 6,000 feet deep. It is estimated that over 2 billion years of earth's geologic history is exposed from the erosion caused by the Colorado River. The Colorado River started flowing through this area about 17 million years ago. The Grand Canyon is an easy landmark in case you are ever in orbit around the earth with no reference. You can only hope you'll be found in that situation one day. 

The Kaibab Plateau is the stretch of green that borders the canyon to the North. There are several species that are endemic to the plateau. 

Mosaic of Landsat 8 Imagery 11-15-2014 and USGS National Elevation Dataset 1/3 arc-second
Dark and light orange correspond with low and high elevation respectively
Same extent as imagery shown above

Monday, December 22, 2014

East Michigan Ice

Landsat 8 false color composite - East coast of Lake Michigan April 7, 2014
Spring Lake to the north and South Haven to the south.
Ice coverage shown as cyan. Vegetation shown as green.
Resolution ~30m
 This last winter was not your average season. The west experienced warmer than average temperatures and little precipitation while the east was stuck dealing with an 'arctic blast'. This caused frigid temperatures for most of the winter months and probably helped jetBlue post profits as they ferried everyone down to Florida and the Caribbean to enjoy some sun.

As a result of the high precipitation and low temperatures Lake Michigan had the highest ice coverage on record since 1973. The precipitation brought much needed relief to the area and I'm sure marina owners and shipping managers won't mind the higher lake levels.

Aqua false color composite - East coast of Lake Michigan April 8, 2014
Wabaningo to the north and Bridgman to the south.
  Ice coverage shown as cyan. Vegetation shown as green.
Resolution ~ 250m

Zoom....enhance