Monday, December 31, 2007

The view from Google Earth: The Man-Made Landscape

I have always loved aerial photographs ---this is the way to view the familiar in an unfamiliar way. Google Earth now allows you to become an aerial photographer on the cheap by just downloading a screenshot. Here are some interesting pictures.

Intersection of I-110 and I-105 in Los Angeles. Los Angeles is the city of freeways: many people find highways ugly and unsightly. But I think with flying ramps and elegant curves, freeway intersections can be an intricate work of art. This is a stacked interchange with 5 levels of ramps flying over each other.

The circular spots are crop fields which are irrigated by a pipe that rotates around a central pivot. This is a crop field from Saudi Arabian desert.


A mixture of circular and traditional irrigation can be seen in this picture from Kansas.


Imperial valley is one of the most agriculturally fertile region in California. Much of it is below sea level and is irrigated by a complex system of dams and canals. Overflow of the irrigation system has created the inland lake of Salton Sea.

Salton sea is a saline lake. The red coloration is from halophilic bacteria.

The San Francisco bay has a large number of salt evaporation ponds at its southern end. Halophilic bacteria gives the evaporation ponds their color.


Palm island (Palm Jumeirah) in Dubai.