Scientific Investigations Report 2007–5224
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5224
Figure 3. Optical-backscatter sensor calibration, (A) first sensor deployed November 21, 2003, through January 21, 2005, and (B) second sensor deployed January 21, 2005, through June 1, 2006, at Walker Creek near Marshall, California.