Dataset: dive log - CROCKS-II
Deployment: AT15-44

Alvin dive log from off Costa Rica January 2010

Principal Investigator:

Lisa A. Levin (University of California-San Diego, UCSD-SIO)

Co-Principal Investigator:

Victoria J. Orphan (California Institute of Technology, Caltech)

Anthony E Rathburn (Indiana State University, ISU)

Gregory Rouse (University of California-San Diego, UCSD-SIO)

Project:

Short-term colonization processes at Costa Rica methane seeps (Seep Carbonate Ecology CROCKS II)

Current State:

Final no updates expected

Version Date:

2012-11-14

Data URL:

https://www.bco-dmo.org/dataset-deployment/455527/data

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Description

Atlantis/Alvin cruise off Costa Rica

The primary goal of the cruise was to recover biological experiments deployed at active and inactive seep areas during Feb./March 2009. We successfully recovered 23/24 experimental units deployed on Mound 12, Costa Rica. One was simply missing on the sea floor. By using a gear elevator each day to maximize sample collection (and reserve ALVIN basket space for experiments) we were able to recover our experiments rapidly. This left us time for exploration of unusual biological communities at Jaco Scar.

Methods & Sampling

Dataset acquisition description

Equipment used: standard Alvin tubecores; Ocean Instruments multicorer; Seabird CTD with O2 sensor.

Where indicated, sediment samples from tube cores were sectioned vertically and preserved in buffered formaldehyde (standard procedures) or frozen at -80ºC.

Colonization substrates had macrofauna (>0.3 mm) and meiofauna (>0.42 microns) removed and preserved. Representative individuals were frozen for subsequent stable isotope analyses.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0825436	NSF Division of Ocean Sciences
OCE-0825791	NSF Division of Ocean Sciences
OCE-0826254	NSF Division of Ocean Sciences
OCE-0939232	NSF Division of Ocean Sciences
OCE-0939557	NSF Division of Ocean Sciences
OCE-0939559	NSF Division of Ocean Sciences

Instruments

Alvin tube core

Supplied Description:

Instrument Type

Generic Name: Alvin tube core

Acronym: Tube Core

Generic Description:

A plastic tube, about 40 cm (16 inches) long, is pushed into the sediment by Alvin's manipulator arm to collect a sediment core.

CTD Sea-Bird

Supplied Description:

Seabird CTD with oxygen sensor.

Instrument Type

Generic Name: CTD Sea-Bird

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Multi Corer

Supplied Description:

Ocean Instruments multicorer

Instrument Type

Generic Name: Multi Corer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/51/

Generic Description:

The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
dive	Alvin dive number	integer	no_bcodmo_term
station	location of sample	text	site
lat	latitude; North is positive	decimal degrees	lat
lon	longitude; East is positive	decimal degrees	lon
depth_w	water depth	meters	depth_w
location	location at site	text	no_bcodmo_term
habitat	bottom habitat	text	no_bcodmo_term
seep_activity	degree of seep activity	text	no_bcodmo_term
sample_type	type of sample	text	sample_type
replicate	replicate information	text	replicate
sample_id	sample number or info	text	sample
photos	whether photographs were taken or not	text	no_bcodmo_term
comments	comments	text	comment
fate	processing of sample	text	no_bcodmo_term
yrday_gmt	GMT day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon). In the case of drifter data, year day may be continuous over a multi year period. No time in this dataset so no decimal is added to the yearday.	1 to 365	yrday_gmt
year	year of sampling.	yyyy	year
month	month, GMT time.	1 to 12	month_gmt
day	day of sampling, GMT	1 to 31	day_gmt

Database

Contribute Data

Dataset: dive log - CROCKS-II
Deployment: AT15-44

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: dive log - CROCKS-IIDeployment: AT15-44

Dataset acquisition description

Dataset Processing Description

Dataset: dive log - CROCKS-II
Deployment: AT15-44