Dataset: event log

Name: Scientific sampling event log from R/V Atlantis cruise AT18-14 in the Eastern Mediterranean; 35.3 N 21.7 E (Pickled Protists project, DHAB Metazoans project)
Published: 2011-12-21
Keywords: oceans

Cite This Dataset

Spatial Extent: N:37.6322 E:23.7197 S:35.224 W:21.4052

Project:

Investigations into the Physiological State of DHAB Metazoans (DHAB Metazoans)

Pickled Protists or Community Uniquely Adapted to Hypersalinity? (Pickled Protists)

Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

Joan M. Bernhard (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

21 December 2011

Version Date:

2011-12-21

Validated:

Yes

Current State:

Final no updates expected

Scientific sampling event log from R/V Atlantis cruise AT18-14 in the Eastern Mediterranean; 35.3 N 21.7 E (Pickled Protists project, DHAB Metazoans project)

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Description

The science party used the Rolling Deck to Repository (R2R) event log application (ELOG with cruise-specific custom configuration files) to create a digital event log to record all instrument deployments during the cruise. The log includes information about all scientific sampling events recorded during the cruise including time, position, instrument name and additional comments regarding sampling details.

Methods & Sampling

According to the event log, 5 ROV Jason dives, 10 SID-ISMS deployments, 3 CTD/Niskin rosette casts and one XBT profile were completed during the cruise. A multi-corer (MC800) deployment was conducted as well, but was not successful in collecting any cores, and therefore no data will be reported. It is unlikely that the XBT profile data will be reported either as it was done simply to calibrate some shipboard instrumentation.

Data Processing Description

A preliminary version of the event log was generated by BCO-DMO after the cruise. A quality assurance review was done to ensure unique event numbers, and some cleanup was done to move comments from other fields into the comment field. Several comments had been entered in the notebook page and seafloor depth field. On December 20 and 21, 2011 updates were made to the event after iterative review and consultation with the Chief Scientist. About two dozen events had to be adjusted for the correct date and time (including all of the Deep-SID events). The few entries in the station column were entered as cast numbers instead, and the station column removed as it was no longer needed. The 21 December 2011 version includes all modifications requested by the Chief Scientist.

Data Files

File
event_log.csv (Comma Separated Values (.csv), 35.71 KB) MD5:4a8556eefccd165c0f31aa8cfdce221c Primary data file for dataset ID 3568

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0849578
NSF Division of Ocean Sciences	OCE-1061391

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT18-14		2011-11-25	R/V Atlantis	Virginia P. Edgcomb (Chief Scientist) Joan M. Bernhard (Principal Investigator)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

For this cruise aboard R/V Atlantis, the Seabird CTD 9 included dual conductivity and temperature sensors, a SBE 43 oxygen sensor and a Wet Labs C*Star transmissometer (660nm wavelength). The CTD was deployed in a frame with a 24-position, 10-liter bottle Rosette system.

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

Deep Submersible Incubation Device

Supplied Description:

The Deep-SID was used by Dr. Joan Bernhard to conduct timed, in situ grazing experiments during AT18-14.

Instrument Type

Generic Name: Deep Submersible Incubation Device

Acronym: Deep-SID

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/82/

Generic Description:

The Deep Submersible Incubation Device (Deep-SID) is capable of collecting a 4-liter sample that can then be pushed to 8 subsample chambers that contain a fixative. The Deep-SID was used by Dr. Joan Bernhard to conduct in situ grazing experiments during AT18-14.

Expendable Bathythermograph

Supplied Name: XBT

Supplied Description:

According to the event log, one XBT probe was fired. The Chief Scientist did not know the type (T-5 or T-7).

Instrument Type

Generic Name: Expendable Bathythermograph

Acronym: XBT

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/132/

Generic Description:

An XBT is an expendable free-fall temperature probe that provides a profile of measured temperature against depth calculated from a fall-rate model. For example, two popular XBT models are the T-5 and T-7 probes from Sippican. More information is available from Lockheed Martin Sippican at URL: http://www.sippican.com/.

ROV Jason

Supplied Description:

During the ROV Jason dives for this cruise, two types of sampling were conducted: injector push cores or.sediment scooped into chamber pots each injected with one of three types of preservatives: RNAlater, formalin, or glutaraldehyde.

Instrument Type

Generic Name: ROV Jason

Generic Description:

The Remotely Operated Vehicle (ROV) Jason is operated by the Deep Submergence Laboratory (DSL) at Woods Hole Oceanographic Institution (WHOI). WHOI engineers and scientists designed and built the ROV Jason to give scientists access to the seafloor that didn't require them leaving the deck of the ship. Jason is a two-body ROV system. A 10-kilometer (6-mile) fiber-optic cable delivers electrical power and commands from the ship through Medea and down to Jason, which then returns data and live video imagery. Medea serves as a shock absorber, buffering Jason from the movements of the ship, while providing lighting and a bird’s eye view of the ROV during seafloor operations. During each dive (deployment of the ROV), Jason pilots and scientists work from a control room on the ship to monitor Jason’s instruments and video while maneuvering the vehicle and optionally performing a variety of sampling activities. Jason is equipped with sonar imagers, water samplers, video and still cameras, and lighting gear. Jason’s manipulator arms collect samples of rock, sediment, or marine life and place them in the vehicle’s basket or on "elevator" platforms that float heavier loads to the surface. More information is available from the operator site at URL.

Submersible Incubation Device-In Situ Microbial Sampler

Supplied Description:

The SID-ISMS was developed for and first deployed during this cruise.

Instrument Type

Generic Name: Submersible Incubation Device-In Situ Microbial Sampler

Acronym: SID-ISMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/82/

Generic Description:

The Submersible Incubation Device-In Situ Microbial Sampler (SID-ISMS) system was developed for the 2011 NSF funded DHAB Metazoans Mediterranean Brine research project and first used on cruise AT18-14. The system includes several integrated components including: a 2 liter incubation chamber; fixation filters and water sample bottles; a High Range CTD (Neil Brown Ocean Sensors, Inc., USA) equipped with two turbidity sensors (Wet Labs ECOView); an Aanderra 2808F oxygen optode; an SDSL-data link; and a sonardyne beacon, a pinger and a 24 volt deep-sea battery. The sensors and sampling devices are mounted on a frame that is attached to the hydro-wire. Lowering rate and recovery speed are controlled by a winch mounted on the surface vessel.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
TZ	timezone (offset from UTC) in which sampling event was conducted	dimensionless	time_zone
event	unique sampling event number derived from local YYYYMMDD.HHMM	dimensionless	event
date	date (UTC) as YYYYMMDD	dimensionless	date
time	time (UTC) using 24 hour clock HHMM format	dimensionless	time
latitude	latitude (North is positive; South is negative)	decimal degrees	lat
longitude	longitude (East is positive; West is negative)	decimal degrees	lon
instrument	name of instrument or sampling system used to collect data	dimensionless	instrument
action	activity performed with the instrument; e.g. deploy/recover, start/end, etc.	dimensionless	ev_type
cast	cast number	dimensionless	cast
seafloor	depth of water; seafloor depth from the shipboard 12 kHz Knudsen echosounder	meters	depth_bottom
author	name of person entering the event	dimensionless	investigator
comment	free text comment	dimensionless	comment
dive	unique dive identification or number	dimensionless	dive_id
sample_type	Sample type is a custom field created for this cruise, used to describe the types of samples taken. See the dataset documentation for a detailed explanation.	dimensionless	sample_type
basin	A term describing the basin location where sampling occurred. For this cruise it one of three possible terms: L'Atalante, Urania or Discovery.	dimensionless	no_bcodmo_term
habitat	Habitat is a custom field added to the event log for this cruise. It is one of three terms: control, halocline or brine.	dimensionless	no_bcodmo_term

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Dataset: event log