EK60 Water Column Sonar Data Collected During FR1104

Spring 2011 California Current Ecosystem Survey. The spring 2011 California Current Ecosystem (CCE) survey was conducted aboard one
NOAA research vessel and a chartered fishing vessel. The NOAA ship Bell M. Shimada (March
23-April 27) covered the area off of the west coast of US from Cape Flattery, Washington to San
Diego, California with most of the stations off California located within the area from San
Francisco to San Diego (CalCOFI lines 63.3 to 93.3 from March 27 to April 25). The F/V Frosti
(March 26-April 28) covered the area from San Francisco to San Diego, California (CalCOFI
lines 61.7 to 95, data collected April 1-26). Within the CCE survey the Shimada occupied the
primary CalCOFI lines, 76.7 to 93.3, from April 10 to 25 for the spring CalCOFI cruise. During
the CCE and the CalCOFI surveys, CalVET tows, Bongo tows, CUFES and trawls were
conducted aboard both vessels. Data from both CCE and CalCOFI surveys were included in the
estimation of spawning biomass of Pacific sardines.