Hydrographic Data from the Louisiana-Texas Continental Shelf of the Gulf ofMexico: Texas Institutions Gulf Ecosystem Research (Tiger) Cruise 92G-04 in Cooperation with NOAA-NECOP

摘要

GYRE cruise 92G-04 was supported by the Dept. of Oceanography at Texas A&MUniversity for the purpose of research and training. The research was a part of the continuing NOAA initiative for Nutrient Enhanced Coastal Ocean Productivity (NECOP) that is coordinated by NOAA's Coastal Ocean Program. The principal focus was on the areas of the continental shelf that are seasonally hypoxic or that are subjected to intense accumulation of material from the Mississippi River. The specific studies included a comparison of sediment oxygen demand (Row and Boland) with sulfate reduction (Morse), estimates of benthic photosynthesis using light and dark chambers (Rowe and Boland), and dissolved organic matter distribution and turnover rates in relation to water column microbial activities (Cifuentes and Coffin). Anchor stations were occupied during the daylight hours, during which experiments were conducted in situ on the seafloor, with extensive coring and water sampling conducted adjacent to these sites. During the night, CTD stations were made to characterize the water column.