Monitoring instrumentation suite

We use a suite of instruments to perform long time-series monitoring of the sea floor at Station M, off shore of the California Coast (34.5°N, 123° W). Most of the instruments used at Sta. M are autonomous, working independently at depth (4000m) without outside control for nearly a year at a time. The lab has increasingly worked toward developing instruments that collect data during extended deployments lasting up to a year.

StM_Instruments

Station M instrumentation suite (not to scale).

For an update on the results of long-term monitoring at Station M, see the open access paper:

2013 K.L. Smith, Jr., H.A. Ruhl, M. Kahru, C.L. Huffard and A.D. Sherman. Deep ocean communities impacted by changing climate over 24 y in the abyssal northeast Pacific. Proc. Nat. Acad. Sci. 110(49): 19838-19841

Lagrangian Sediment Trap deployed

Lagrangian sediment traps

Sediment traps are used to collect sinking organic matter as it descends toward the seafloor. Most sediment traps are moored in one location, but Lagrangian sediment traps drift with the currents.
CameraTripod

Time-lapse camera mooring

The time-lapse camera consists of a Benthos 377 camera mounted on a titanium frame at an angle of 31 degrees from horizontal with the lens approximately two meters above the seafloor. Up to 3,500 images can be collected in 4.6 months.
The benthic rover during a test dive in January 2007.

Benthic Rover

The Benthic Rover autonomously transits the seafloor taking measurements of sediment community oxygen consumption, which the lab uses to calculate organic carbon demand.
ses323

Sedimentation Event Sensor (SES)

The SES is a sediment trap that images the sample rather than collecting it, allowing for a temporal resolution of hours rather than days, and more detailed analysis of sediment components.
SedimentTrap

Sediment traps

Sediment traps collect the samples needed for the lab's measure of particulate organic carbon. The sample is split into portions for microscopy, pigment analysis and carbon analysis.

Science

Upper-ocean systems
Biological oceanography
Biological oceanography research
Publication—Global modes of sea surface temperature
Chemical sensors
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Land/Ocean Biogeochemical Observatory in Elkhorn Slough
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Periodic table of elements in the ocean
Profiling float
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Effects of humans
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Lost shipping container study
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Monitoring instrumentation suite
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