Downwelling field experiment (image) Carnegie Institution for Science Share Print E-Mail Caption Downwelling field experiment at Searsville Reservoir in Woodside, California, which shows the pipes through which oxygenated surface water is pumped into the depths to prevent the formation of dangerous, low-oxygen dead zones. Credit Courtesy of Nona Chiariello. Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.