The usual brownish, clouded color of the near shore waters is from stirred-up sand and silt, said College of Charleston oceanographer Jack Ditullio.
“The blue color just comes from the blue (in the spectrum of) light scattered more effectively,” he said. The sands and silt might have settled with the drier weather and slower flow of water out the estuaries, he said. And there just might be something to that. Along with dry weather, tides settled recently, dropping from a range of 5 to 6 feet between high and low to 3 to 4 feet.
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