Hydrographic Data from the Texas Continental Shelf: Texas Institutions Gulf Ecosystem Research Cruise 90G-04




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R/V GYRE cruise 90G-04 was a one-week Texas Institutions Gulf Ecosystem Research (TIGER) cruise targeted to investigate carbon cycling on the Texas continental shelf in late winter-early spring (19-24 February 1990). After departing Galveston on 19 February, a transect of inner shelf stations spaced at 10- to 15-nautical mile intervals (STA 01-07) was made during the first half of the trip along a SE heading from the Galveston Bay sea buoy to a water depth of 50 m. GYRE then proceeded to the upper slope to occupy an oceanic station (STA 06) in a water depth of 534 m. For the second half of the cruise, GYRE returned to the inner shelf and repeated hydrographic work to make STA 09 in the vicinity of STA 03; STA 10 and 11 in the vicinity of STA 01; and STA 12 and 13 in the vicinity of STA 02 and 04, respectively. At STA 14 in the vicinity of STA 07 where water depth was 50 m, a free vehicle benthic lander, which measured benthic respiration an nutrient regeneration, was deployed for 6 hours. In addition to the lander deployment, a drifting sediment trap (suspended 25 m below the surface) was also released at STA 14. After the floating trap had been out for 31 hours (and during which time GYRE made a hydrographic STA 15 near the location of previously-occupied STA 05), the material that it had trapped was successfully recovered, and the ship returned to Galveston on 24 February




47C Ocean Sciences & Technology: Physical & Chemical Oceanography;47G Ocean Sciences & Technology: Hydrography;Benthos;Carbon cycle;Coastal regions;Continental shelf;Continental shelves;Data;Deployment;Depth;Galveston;Galveston bay;Gulf of Mexico;Hydrographic data;Management;Materials recovery;Mexico;Nutrients;Respiration;Seasonal variations;Site surveys;Suspended sediments;Tables;Texas;Time;United States;Water;