10. Image Credits

Introduction: Detecting Change - Understanding Change

Lake Chad in Africa in 1972 and then later in October 2001, showing the changes in water area and cover conditions that have occurred between these two dates
Satellite images
US Geological Survey, USA
URL: Lake Chad, West Africa, 1963, 1973, 1987, 1997, 2007
Last access: 09.06.2009
View of the entrance to the Arsenal in Venice, painted in 1732 by Canaletto
Painting
The image is a Wikimedia Commons file created by User: Dacxjo under the terms of the GNU Free Documentation Licence, Version 1.2.
URL: http://commons.wikimedia.org/wiki/File:View_of_the_entrance_
to_the_Arsenal_by_Canaletto,_1732.jpg
Last access: 10.06.2009
View of the entrance to the Arsenal in Venice, photograph taken in August 2006
Photography
The image is a Wikimedia Commons file created by User: MarkusMark under the terms of the GNU Free Documentation Licence, Version 1.2.
URL: http://commons.wikimedia.org/wiki/File:38VeneziaArsenale.jpg
Last access: 10.06.2009