Dataset: CTD data at Stations K and D

This dataset has not been validatedPreliminary and in progressVersion 1 (2023-11-21)Dataset Type:Cruise Results

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

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

Co-Principal Investigator: Tomoko Komada (San Francisco State 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 Station (K; Latitude: 35.375524, Longitude: -121.501211) and at Station D (Latitude: 36.112556, Longitude: -122.186097) collected on Dec 4th, 2020 and Dec 8th, 2020, respectively, onboard Oceanus R/V Sikuliaq using SeaBird SBE-911+. It showed the depth profile of different physiochemical properties of the water column at the Stations K and D sampling locations.

Cite Dataset

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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