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Station M Instrument Servicing Expedition 2018 – Log 2

The team checks over the Sedimentation Event Sensor (SES) one last time before deploying to the abyss for another year. From left to right: Research Specialist Crissy Huffard, Senior Mechanical Technician John Ferreira, Software Engineer Rich Henthorn, and Electrical Engineer Paul McGill.

Station M Instrument Servicing Expedition 2018 – Log 2

Over the 30-year (and counting) time-series study at Station M, we have seen changes in the biological carbon pump with changing sea surface conditions along the California coast. The abyss is not the invariable environment most people once envisioned. Short-term processes and events can have major impacts on long-term patterns.

Every two hours, the Sedimentation Event Sensor (SES) takes fluorescence readings and a picture of the marine snow (organic materials drifting from the surface to the seafloor) that settled on a slide (at the base of the funnel). With this information, we gain a detailed look into short-term variation in carbon delivery to the abyss.

About Station M Instrument Servicing Expedition 2018

October 17-25, 2018 – The Pelagic-Benthic Coupling Group traveled out to Station M to service autonomous instruments that have been down at 4,000 meters for the past year.