Thursday, November 5, 2009

data boom

The above two images show an aerial view of the Ashby fleamarket that happens every Saturday and Sunday in the parking lot of the Ashy Bart Station. The top photo is from the USGS Seamless database and is 0.33' for Alameda County, the bottom is from Google Maps. The GM aerial seems to be taken at an earlier date, based on how the shrubs along the north edge of the parking lot have grown in the USGS aerial. (or were they pruned?) Despite this the similarity in the layout & temporary structures of the flea market itself make it seem like images could have been recorded on the same day, perhaps just a few hours apart. Why do I only have access to aerial images that were taken on the weekend?
these and other questions, weekly and biweekly.

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