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...
Profiling CTDs
Q&A: Diagnose This Profile
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.
Q&A: Two Symptoms of the Same Problem
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...
Q&A: Erratic Profiles
November 2019 Newsletter The data above come from a profiling CTD, deployed in sea conditions that caused approximately 1-meter ship heave. Two things stick out – relatively unchanging salinity data during the downcast, and noisy data during the upcast (shown in light...
Salinity Spikes: Sensor or Environment?
These data show a subtle problem that is producing “fuzzy” salinity and oxygen data. While the overall shape of the profile appears reasonable, small spikes are present throughout the CTD cast. The black lines encompass a particularly strange spot where both salinity...
Featured Posts
2024 MTS Buoy Workshop
We are excited to exhibit at the upcoming MTS Buoy Workshop this year from May 20 - 23. Please come visit us in our backyard at table #1 to chat with our team to learn more about the latest at Sea-Bird Scientific and oceanography. We'll have associates from...
Case Study: Understanding the Implications of the Lahaina Wildfire on Coastal Water Quality with the HydroCAT-EP V2
Contributors: Dr. Andrea Kealoha (she/her)¹, Natalie Zielinski (she/her)², Marialena Christopoulou (she/her)² Authors: Lindsey Biondo (she/her)², Natalie Zielinski (she/her)² ¹ University of Hawai’i at Mānoa, Department of Oceanography, 1000 Pope Road, Honolulu, HI...
Webinar on Fathom Software in Partnership with the Marine Technology Society
We were excited to partner with the Marine Technology Society (MTS https://www.mtsociety.org/) to bring you a webinar to walk through our new software. We’re excited to release Fathom – the latest in software innovation at Sea-Bird Scientific (SBS). Heather Eberhart,...