Dataset: CTD data at Santa Barbara Basin and Catalina Basin

Preliminary and in progressVersion 1 (2023-11-15)Dataset Type:Cruise Results

Principal Investigator, Contact: Hussain Abdulla (Texas A&M University)

Principal Investigator: Tomoko Komada (San Francisco State University)

Co-Principal Investigator: David J. Burdige (Old Dominion University)

BCO-DMO Data Manager: Sawyer Newman (Woods Hole Oceanographic Institution)


Project: Collaborative Research: Peptide Deamination as a Source of Refractory Dissolved Organic Matter in Marine Sediments (Peptide Deamination)


Abstract

CTD data (Conductivity, temperature, depth, Chl-a, and dissolved oxygen) at Catalina Basin (Latitude: 33.3005, Longitude: -118.6) and Santa Barbara Basin (Latitude: 34.22396, Longitude: -119.983) collected on on June 23rd, 2019 and June 27th, 2019, respectively on board R/V Oceanus using SeaBird SBE-911+. It showed the depth profile of different physiochemical properties of the water column at the Catalina Basin and Santa Barbara Basin sampling locations.

The Conductivity-Temperature-Depth (CTD) instrument (SeaBird SBE-911+) equipped with the following sensors (Temperature, Conductivity, Pressure, Fluorometer, Dissolved Oxygen, Transmissometer, Photosynthetically Active Radiation (PAR) was initially tested and calibrated. The CTD rosette was mounted on a winch cable and underwent a brief "soak" at the surface for sensor equilibration. The CTD-rosette was then lowered into the water at a typical descent rate of ~ 0.5 meters per second, all the while logged data in real-time to the onboard computer. At ~1m above the sediment depths, the descent was paused. Then, the rosette-CTD system was ascended, and additional measurements were collected. The collected data was then post-processed to correct for sensor drift, followed by a thorough deployment documentation, including any anomalies or issues encountered.


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