SeaCATs, the CTD family consisting of the 16plus V2 and 19plus V2, were first developed in late 1985 back when Sea-Bird had barely evolved past a garage operation. When a customer requested a moored CTD – the first that Sea-Bird had ever built, Sea-Bird's team...
The acronym “CTD” might unofficially represent more than just conductivity, temperature, and depth. Since most CTDs include one or more auxiliary sensors, a given CTD package might technically be called a “CTDpHDOFLNTUTr” (CTD + pH + dissolved oxygen + fluorescence +...
This salinity profile was from an arctic deployment in rough seas. At a certain point, we see regular salinity spikes of about ± .01 psu in the upcast data. Can you determine what caused this?
Did you know that the sensors that power BGC-Argo are also in heavy use on shipboard and moored platforms? Learn about the analogous BGC sensors for deployment on moorings and vessels, and how your field crew can keep stride with ocean robots.
From bottom contact triggers to transmissometers, oceanographic sensor options are vast and diverse, and choosing the right combination of sensors can significantly augment a CTD’s measurement capabilities. Although getting disparate technologies to talk to one...
Dissolved oxygen should not be negative. Can you determine the error that created the unusual oxygen profile above?
Unlike analog auxiliary sensors, instruments that output serial RS-232 data are more challenging to integrate with Sea-Bird Scientific CTDs. Despite RS-232 being a standard communication protocol, most instruments have a unique data output format and command set. As...
Although they should match perfectly, the two sensors rarely reported the same temperature value throughout their deployment. Furthermore, the 16plusV2 appeared to stop logging, although the batteries still had life upon recovery. Can you identify the problem?
The data shows conductivity from a 19plus deployed in a shallow estuarine river. The red line shows the CTD downcast and the green line shows the upcast. While the upcast data show the expected shape for a CTD profile (low conductivity at the surface, rising conductivity as the CTD descends), the downcast shows an unusual shape in until about 2.6 meters depth, where conductivity appears to suddenly correct itself.
May 2020 Newsletter The data above show two major symptoms of the same problem occurring in different locations on a 19plusV2 profiling CTD. On the left, oxygen appears to drop below zero and is highly erratic during the downcast (light blue). However, once it hits a...
Please join us alongside BioSonics, Marine Technology Society, and Sequoia Scientific as we host a Seattle Ocean Science & Technology Conference Happy Hour! Date: Wednesday, November 29, 2023 from 5:30 - 8:30pm Location: National Nordic Museum | 2655 NW Market...
We were excited to be featured in ECO magazine’s latest digital edition of their Deep-Sea Exploration series. In the spring of 2018, Triton Submarines reached out to the team at Sea-Bird Scientific, to express interest in using our SBE 49 FastCAT CTD (conductivity,...
Sea-Bird Scientific is excited to be attending ADMT-24 in Hobart, Tasmania from October 23 - 27. The Argo Data Management Team Meeting is a time for the data managers who contribute to international Argo to come together and discuss technical matters pertaining to the...