Water column sample data from predefined locations of the West Florida Shelf: USGS Cruise 11CEV02

The United States Geological Survey (USGS) is conducting a study on the effects of climate change on ocean acidification within the Gulf of Mexico; dealing specifically with the effect of ocean acidification on marine organisms and habitats. To investigate this, the USGS participated in cruises in the West Florida Shelf and northern Gulf of Mexico regions aboard the R/V Weatherbird II, a ship of opportunity lead by Dr. Kendra Daly, of the University of South Florida (USF). This cruise occurred February 17-23, 2011, leaving from and returned to Saint Petersburg, Florida. The USGS collected data pertaining to pH, dissolved inorganic carbon (DIC), and total alkalinity in discrete samples. Seventy-one underway discrete samples were collected approximately hourly over a span of 1628 kilometer (km) track line, additionally 34 samples were taken at 10 stations. Flow-through conductivity-temperature-depth (CTD) data were collected, which includes temperature, salinity, and pH. Corroborating the USGS data are the vertical CTD profiles collected by USF, using the following sensors: CTD, oxygen, chlorophyll fluorescence, optical backscatter, and transmissometer. Additionally, discrete depth samples for nutrients, chlorophyll, and particulate organic carbon/nitrogen were collected.

美国地质调查局（United States Geological Survey, USGS）正开展一项针对气候变化对墨西哥湾海洋酸化影响的研究，重点探究海洋酸化对海洋生物及其栖息环境的影响。为推进此项研究，美国地质调查局搭乘由南佛罗里达大学（University of South Florida, USF）肯德拉·达利博士牵头的“气象鸟二号”（R/V Weatherbird II）科考船，在佛罗里达西部陆架与墨西哥湾北部海域执行科考航次。本次航次于2011年2月17日至23日开展，往返于美国佛罗里达州圣彼得斯堡港。美国地质调查局采集了离散样本中的pH值、溶解无机碳（dissolved inorganic carbon, DIC）及总碱度数据。本次航迹总长1628千米，期间以约每小时1次的频率采集了71份行进中离散样本，另在10个站位采集了34份样本。同时采集了流动式温盐深（conductivity-temperature-depth, CTD）数据，涵盖温度、盐度及pH值。与美国地质调查局采集的数据相互佐证的，是南佛罗里达大学通过以下传感器获取的垂直CTD剖面数据：CTD、溶氧传感器、叶绿素荧光传感器、光学后向散射传感器及透射仪。此外，还采集了用于检测营养盐、叶绿素及颗粒有机碳/氮的深度离散样本。