Event log from RVIB Nathaniel B. Palmer NBP1002 in the Western Antarctic Peninsula from March to May 2010 ( Antarctic_micronek project)

Website: https://www.bco-dmo.org/dataset/487191
Data Type: Cruise Results
Version: 24 January 2014
Version Date: 2014-01-24

Project
» Possible climate-induced change in the distribution of Pleuragramma antarcticum on the Western Antarctic Peninsula Shelf (Antarctic_micronek)
ContributorsAffiliationRole
Torres, Joseph J.University of South Florida (USF)Chief Scientist
Buesseler, Kenneth O.Woods Hole Oceanographic Institution (WHOI)Co-Chief Scientist
Simms, AlexanderOklahoma State University (OSU)Co-Chief Scientist
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: N:-62.9955 E:-56.4963 S:-70.42 W:-77.0007
Temporal Extent: 2010-03-20 - 2010-04-27

Dataset Description

RVIB Nathaniel B. Palmer Cruise 10-02, March 16-May 2, 2010 long of scientific activities including CTDs, MOCNESS tows, Sediment trap deployments, underwter particulate camera (UPC) deployments, Tucker trawls, Otter trawls, Penguin diet sampling, XBTs, Multibeam surveys, Blake trawls, and beach sampling.

There was a significant blog in the Tampa Bay times detailing the cruise events, some preliminary findings and of course, phenomenal pictures.

Photo from Ph.D. student Paul Suprenand.


Data Processing Description

BCO-DMO Processing Notes:

1) Added 'NBP1002' to all event numbers.

1b) Standardized instrument names.

2) Assumed NBST = Neutrally Buoyant Sediment Trap and UPC = Underwater Partical Camera

3) Moved Cast# from 'activity' name to column of its own and removed spaces from the 'activity' field

4) Combined deg decmin -> degdecmin and had to remove leading zero in Latitude degrees (max lat =90 in one direction)

5) Put in leading zeros so all times were HH:MM. 

(4 and 5 necessary for jgofs/globec software)

6) changed 'person' column to 'si' for scientific investigator.

7) added column: ISOdateTime_start.  BCO-DMO convention for interoperability. 


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Data Files

File
NBP1002eventlog.csv
(Comma Separated Values (.csv), 21.57 KB)
MD5:84d50ae28d640995a96f1f8bf32968e5
Primary data file for dataset ID 487191

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Parameters

ParameterDescriptionUnits
event event or sampling operation number
instrumentinstrument used to collect data, see: instrument list
cast cast number
date_startUTC date at the start of the operation, e.g. 20-Mar-10 dd-bbb-yy
time_startUTC Time of day, 24 hour clock, at the start of the operation HH:MM
lat_startlatitude, negative = South, at the start of the operation decimal degrees
lon_startlongitude, negative = West, at the start of the operation decimal degrees
siscientific investigator's name responsible for this particular operation
date_endUTC date at end of the operation mm-bbb-yy
time_endUTC time at the end of the operation, 24 hour clock. HH:MM
commentfree text comments
lat_endlatitude at the end of the operation, if provided.  S = negative decimal degrees
lon_endlongitude at the end of the operation, if provided.  W = negative. decimal degrees
ISOdateTime_start_UTCInternational Organization for Standardization (ISO) time standard format. yyyy-mm-ddThh:mm:ss.ssZ

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Deployments

NBP1002

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2010-03-16
End Date
2010-05-02


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Project Information

Possible climate-induced change in the distribution of Pleuragramma antarcticum on the Western Antarctic Peninsula Shelf (Antarctic_micronek)

Coverage: Western Antarctic Peninsula


Pleuragramma antarcticum, the Antarctic silverfish, plays a key role in the trophic pyramid of the Antarctic coastal ecosystem, acting as food for larger fishes, flying and non-flying seabirds, pinnipeds, and whales. In turn, they are predators on coastal euphausiids, including both Euphausia superba and E. crystallorophias. Historically, Pleuragramma have been an important food source for Adélie Penguins of the Western Antarctic Peninsula (WAP), but during the last decade Pleuragramma have disappeared from the Adélie diet. We suggest that Pleuragramma's absence from the diets of top predators is linked to the declining sea ice canopy, which serves as a nursery for eggs and larvae during the austral spring. The research will investigate four hydrographic regimes over the WAP continental shelf with the following features: (1) persistent gyral flows that act to retain locally spawned larvae, (2) spring sea ice that has declined in recent years (3) the prevalence of adult silverfish, and (4) the presence of breeding Adélie penguins whose diets vary in the proportions of silverfish consumed. The research will evaluate the importance of local reproduction versus larval advection, and the extent to which populations in the subregions of study are genetically distinct, via analysis of population structure, otolith microchemistry and molecular genetics of fish. The Pleuragramma data will be compared with penguin diet samples taken synoptically. 



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Funding

Funding SourceAward
NSF Antarctic Sciences (NSF ANT)

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