Dataset: TN391 Master Sample List

Name: TN391 Master Sample List
Published: 2024-12-03
Keywords: , , , oceans

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Western Atlantic margin and Gulf of Mexico from Woods Hole to Gulfport, Mississippi, depth range 500 m-3300 m

Temporal Extent: 2021-05-25 - 2021-06-19

Project:

Collaborative Research: dispersal depth and the transport of deep-sea, methane-seep larvae around a biogeographic barrier (SALT)

Principal Investigator:

Shawn M. Arellano (Western Washington University - Shannon Point Marine Center, SPMC)

David B. Eggleston (North Carolina State University - Center for Marine Science and Technology, NCSU CMAST)

Craig M. Young (University of Oregon, OIMB)

Co-Principal Investigator:

Ruoying He (Western Washington University, WWU)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-12-03

Restricted:

Validated:

Current State:

Data not available

Abstract:

List of scientific camples obtained during the TN391 cruise to methane seeps in the Gulf of Mexico and Northwestern Atlantic during May and June 2021. Includes benthic invertebrate samples collected by ROV Jason, plankton samples collected with the SyPRID sampler on Sentry, and water samples collected with niskin bottles on the CTD carousel.

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Methods & Sampling

Benthic animal samples were collected using scooops and slurps on ROV Jason. Plankton samples were collecting using the SyPRID (Sentry's Precission Robotic Impeller-Driven) sampler with 150 μm mesh affixed to AUV sentry. Water samples were collected via 4-L niskin bottles on the ship's CTD carousel and filtered for a variety of studies.

Problems/Issues

On the "SyPRID" sheet: Plankton samples from the Florida Keys site were collected using a 150 μm mesh hand net on the ship's winch instead of SyPRID on Sentry. Hand net sample data is combined with SyPRID sample data for comparative purposes.

Data Processing Description

BCO-DMO Processing:
- removed 'NA' as missing data value (appears as blank/empty in final csv);
- renamed fields to comply with BCO-DMO naming conventions.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1851286
NSF Division of Ocean Sciences	OCE-1851383
NSF Division of Ocean Sciences	OCE-1851421

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
EN658	SALT Fall 2020 cruise	2020-10-22	R/V Endeavor	Shawn M. Arellano (Chief Scientist)	data info

Instruments

AUV Sentry

Supplied Name:

Supplied Description:

AUV Sentry with SyPRID attached.

Instrument Type

Generic Name: AUV Sentry

Generic Description:

The autonomous underwater vehicle (AUV) Sentry is a fully autonomous underwater vehicle capable of exploring the ocean down to 6,000 meters (19,685 feet) depth. Sentry builds on the success of its predecessor the ABE, with improved speed, range, and maneuverability.

Sentry's hydrodynamic shape also allows faster ascents and descents. Sentry carries a superior science sensor suite and an increased science payload enabling it to be used for both mid-water and near-seabed oceanographic investigations. Sentry produces bathymetric, sidescan, subbottom, and magnetic maps of the seafloor and is capable of taking digital bottom photographs in a variety of deep-sea terrains such as mid-ocean ridges, deep-sea vents, and cold seeps at ocean margins. Sentry is uniquely able to operate in extreme terrain, including volcano caldera and scarps. Sentry's navigation system uses a doppler velocity log and inertial navigation system, aided by acoustic navigation systems (USBL or LBL). The USBL system also provides acoustic communications, which can be used to obtain the vehicle state and sensor status as well as to retask the vehicle while on the bottom. In addition its standard sensors, Sentry has carried a variety of science-supplied sensors, including the Nakamura redox potential probe, ACFR 3-D imaging system, and the Tethys in-situ mass spectrometer.

Sentry can be used to locate and quantify hydrothermal fluxes. Sentry is also capable of a much wider range of oceanographic applications due to its superior sensing suite, increased speed and endurance, improved navigation, and acoustic communications. Sentry can be used as a stand alone vehicle or in tandem with Alvin or an ROV to increase the efficiency of deep-submergence investigations.

More information is available from the operator site at URL: http://www.whoi.edu/main/sentry

Sentry Precision Robotic Impeller Driven Sampler

Supplied Name: SyPRID

Supplied Description:

Instrument Type

Generic Name: Sentry Precision Robotic Impeller Driven Sampler

Acronym: SyPRID Sampler

Generic Description:

The SyPRID (Sentry Precision Robotic Impeller Driven) sampler is an innovative deep-rated (6000 m) plankton sampler that partners with the Sentry Autonomous Underwater Vehicle (AUV) to obtain paired, large-volume plankton samples at specified depths and survey lines to within 1.5 m of the seabed and with simultaneous collection of sensor data.

SyPRID uses a perforated Ultra-High-Molecular-Weight (UHMW) plastic tube to support a fine mesh net within an outer carbon composite tube (tube-within-a-tube design), with an axial flow pump located aft of the capture filter. The pump facilitates flow through the system and minimizes the bow wave at the mouth opening. The cod end, a hollow truncated cone, is also made of UHMW plastic and is designed to 'soften' the landing of zooplankton on the capture surface. SyPRID attaches as a saddle-pack to the Sentry vehicle.

Sentry itself is configured with a flight control system that enables autonomous survey paths to altitudes as low as 1.5 m. In its inaugural deployment at the Blake Ridge Seep (2160 m) on the US Atlantic Margin, SyPRID was operated for 6 h at an altitude of 5 m. It recovered plankton samples from that stratum in excellent condition and with greater larval numbers than recovered in a typical 'near-bottom' MOCNESS sample from comparable habitats and depths. The prototype SyPRID and its next generations will enable studies of plankton or other particulate distributions associated with patchy habitats, localized physico-chemical strata (e.g., above and below the thermocline), or discrete water masses at an unprecedented spatial resolution for a large volume system [1].

More information is available by contacting:
Carl Kaiser
Program Manager
Applied Ocean Physics & Engineering
NDSF AUV Operations Manager
Office Phone: +1 508 289 3269
ckaiser@whoi.edu

[1] Billings, A., Kaiser, C., Young, C. M., Hiebert, L. S., Cole, E., Wagner, J. K. S., & Van Dover, C. L. (2017). SyPRID sampler: A large-volume, high-resolution, autonomous, deep-ocean precision plankton sampling system. In Deep Sea Research Part II: Topical Studies in Oceanography (Vol. 137, pp. 297–306). Elsevier BV. https://doi.org/10.1016/j.dsr2.2016.05.007

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Dataset: TN391 Master Sample List