Patrick, Great shot. The change in color is a secondary effect of the higher salinity (near super-saturation) in the north end of the lake. The color is the result of "Rhodophyta" red algae that thrives in the hyper-saline water. It causes a striking change in color with the "Cyanobacteria", blue/green algae that thrives in the saline water south of the causeway.The algal mats on the bottom of the lake on the south side of the causeway are significant and have been intensely studied. Rodger C. Fry -----Original Message----- From: utah-astronomy-bounces+rcfry=comcast.net@mailman.xmission.com [mailto:utah-astronomy-bounces+rcfry=comcast.net@mailman.xmission.com] On Behalf Of Bruce Hugo Sent: Friday, March 07, 2014 1:23 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] Patrick does it again! Cool shot Patrick! ------------------------------ Spectacular photo of the Great Salt Lake and the way its causeway divides into two distinct arms by Patrick Wiggins -- today's Earth Science Picture of the Day. http://epod.usra.edu/ ------------------------------ _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".