This map shows Regional Cabled Array infrastructure at the summit of Southern Hydrate Ridge and the location of MARUM instruments, denoted by a 1 superscript. Credit: University of Washington.
This map shows Regional Cabled Array infrastructure at the summit of Southern Hydrate Ridge and the location of MARUM instruments, denoted by a 1 superscript. Credit: University of Washington.

The MARUM CTD-DO instrument was provided by the MARUM Center for Marine Environmental Sciences and the Department of Geosciences, University of Bremen, Germany. The probe was by funded by the German Federal Ministry of Education and Research (BMBF) within the scope of the “M³: Monitoring Marine Methane” projects (grants 03F0765A and 03F0854A). The MARUM CTD-DO instrument measures the pressure near the seafloor, temperature, conductivity and dissolved oxygen every minute at the summit of Southern Hydrate Ridge.

Contacts: Dr. Yann Marcon and Professor Gerhard Bohrmann.

Access CTDPFA110 Data

Instrument Models & Deployed Locations

The MARUM CTD-DO Probe was installed on the Southern Hydrate Ridge summit near the medium-powered junction box MJ01B to which it is connected (Figure 1). It consists of a CTD probe (Sea-Bird Electronics SBE16plusV2 SeaCAT) with a dissolved oxygen optode.
Series Make Model
CTDPFA Sea-Bird SBE 16plusV2

Reference Information

Data FormatThe data products of the MARUM CTD-DO Probe consist of: Raw sensor data output (.dat files): raw data in engineering units recorded in one file for each day. Raw data lines are formatted as follow: Temperature (°C, ITS-90) = ttt.tttt Conduct