Dataset: Sediment push core inventory
Deployment: AT37-13_Alvin_Dives

Sediment push cores inventory

Principal Investigator:

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

Co-Principal Investigator:

Erik E. Cordes (Temple University, Temple)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative research: Quantifying the biological, chemical, and physical linkages between chemosynthetic communities and the surrounding deep sea (Costa Rica Seeps)

Coordinated Deployments:

AT37-13

Data URL:

https://www.bco-dmo.org/dataset-deployment/715789/data

Expand/Collapse All

Description

This dataset is an inventory of push corer samples collected by HOV/Alvin on the RV/Atlantis cruises AT/37-13 and AT42-03 to the Costa Rica Margin (Mound 12, Quepos landslide, Jaco Scar) during May/June 2017 and Oct./Nov 2018. It includes a description of the sampling locations and information on the types of analyses that were to be performed on the samples.

Methods & Sampling

Dataset acquisition description

Seafloor sediment push cores were collected using the manned submersible Alvin. Sediment cores were stored at 4ºC upon recovery and extruded from push core liners in 1 or 3 cm increments onboard immediately after collection. Subsamples of each depth horizon were preserved for later microscopy and molecular analysis or processed immediately for pore water geochemistry (See Dekas et al., 2013 Environmental Microbiology) for details.

Data Processing Description

Dataset Processing Description

version 1 BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- blank values were replaced with no data value 'nd'
- reformatted Date from dd-Mon-yy to yyyy-mm-dd

version 2 (2017-09-25) BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- occurrences of 'n.a.' and 'n.m.' were replaced with no data value 'nd'
- reformatted Date from m/d/yyyy to yyyy-mm-dd
- added column for cruise_id
- reformatted lat and lon from degrees and minutes to decimal degrees for cruise_id AT42-03
- corrected date 2018-05-25 to 2018-10-25 for cruise_id AT42-03

version 3 (2021-06-10) BCO-DMO Processing Notes:
* data file converted to UTF-8. A comment in version 2 read with a "bad" character in a comment "bacterial mat near 6▒ water, actively bubbling active", After converting to UTF-8 the comment reads "bacterial mat near 6° water, actively bubbling active"

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1634002	NSF Division of Ocean Sciences

Instruments

Push Corer

Supplied Name:

Supplied Description:

Used to collect sediment samples from HOV/Alvin.

Instrument Type

Generic Name: Push Corer

Generic Description:

Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.

Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Date	sampling date	unitess	date
Dive	Alvin dive number	unitess	dive_id
Push_Core	Push core number	unitess	sample
Region	sampled region	unitess	site
Characteristic	description of physical site and biome	unitess	site_descrip
Activity	hydrothermal activity: inactive; transition; active	unitess	site_descrip
Depth_m	sample depth	meters	depth
lat	latitude; north is positive	decimal degrees	lat
lon	longitude; east is positive	decimal degrees	lon
Serial_Number	lab serial number for sample	unitess	sample
Horizon_cm	the push core sediment depth sampled	centimeters	depth_core
methane	methane sample taken flag; x=yes	unitess	flag
FISH	Fluorescent In Situ Hybridization sample taken flag; x=yes	unitess	flag
DNA	DNA sample taken flag; x=yes	unitess	flag
RNA	RNA sample taken flag; x=yes	unitess	flag
Squeeze_Cakes	Squeeze Cakes sample taken flag; x=yes	unitess	flag
carbonate_nodules	carbonate nodules sample taken flag; x=yes	unitess	flag
sulfide	sulfide sample taken flag; x=yes	unitess	flag
bromobimane	bromobimane sample taken flag; x=yes	unitess	flag
sulfate	sulfate sample taken flag; x=yes	unitess	flag
DIC	DIC sample taken flag; x=yes	unitess	flag
IC	IC sample taken flag; x=yes	unitess	flag
Fe	Fe sample taken flag; x=yes	unitess	flag
pH	pH measure of acidity/alkalinity	unitess	pH
Live_Mud	RNA sample taken flag; x=yes	unitess	flag
cruise_id	cruise identifier	unitless	cruise_id
Site	site name with the sampling region	unitless	site

Database

Contribute Data

Dataset: Sediment push core inventory
Deployment: AT37-13_Alvin_Dives

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Sediment push core inventoryDeployment: AT37-13_Alvin_Dives

Dataset acquisition description

Dataset Processing Description

Dataset: Sediment push core inventory
Deployment: AT37-13_Alvin_Dives