[Directory] [Data...]

Data server object:  Icebreaker




  
    Icebreaker dates and ice edge distance in McMurdo Sound, Antarctica from austral years 1956/1957 to 2014/2015 (McMurdo Predator Prey project)
    
  
  
    
    

Icebreaker dates and ice edge distance in McMurdo Sound, Antarctica from austral years 1956/1957 to 2014/2015 (McMurdo Predator Prey project)

Website: https://www.bco-dmo.org/dataset/674992
Data Type: Cruise Results
Version:
Version Date: 2017-01-27

Project
» Food web dynamics in an intact ecosystem: the role of top predators in McMurdo Sound (McMurdo Predator Prey)
ContributorsAffiliationRole
Kim, StacyMoss Landing Marine Laboratories (MLML)Principal Investigator, Contact
Ainley, David G.H.T. Harvey & AssociatesCo-Principal Investigator
Ballard, GrantPoint Blue Conservation ScienceCo-Principal Investigator
Daly, Kendra L.University of South Florida (USF)Co-Principal Investigator
York, AmberWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: N:-77 E:166.5 S:-78.5 W:163.8
Temporal Extent: 1956-01-01 - 2017-12-31

Dataset Description

This dataset contains dates of icebreaker start and arrival at McMurdo Station in McMurdo Sound, Antarctica between austral years 1956/1957 and 2014/2015.  It also includes the distance between the fast ice edge and McMurdo Station on the date of ship arrival at the fast ice edge.


Acquisition Description

Data were acquired from scientist and icebreaker logbooks and contractor records (DACSUSAP2012-13, pers. comm. P. McGillivary USCG, see link below).   See deployment: McMurdo_IceBreakers_1957-2015 for a list of icebreakers used.

External link to more information about ice-breaking services at McMurdo Station, Antarctica:
* DACSUSAP2012-13 Ice-breaking Services


Processing Description

Note: The arrival day "12" for the icebreaker Vladimir ignatyuk for the 2013 season is uncertain.

Blanks indicate no data were collected.

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* added data column "austral_year" for clarification when start year is before the austral year.
* added approximate latitude and longitude of sampling location near McMurdo Station.


[ table of contents | back to top ]

Parameters

ParameterDescriptionUnits
austral_yearAustral year (start year/end year) in format yyyy/yy unitless
start_yearYear of icebreaker arrival at the edge of the fast ice unitless
start_monthMonth of icebreaker arrival at the edge of the fast ice unitless
start_dayDay of icebreaker arrival at the edge of the fast ice unitless
arrival_yearYear of icebreaker arrival at McMurdo Station unitless
arrival_monthMonth of icebreaker arrival at McMurdo Station unitless
arrival_dayDay of icebreaker arrival at McMurdo Station unitless
edge_distanceDistance between the fast ice edge and McMurdo Station on the date of ship arrival at the fast ice edge. kilometers
shipsName of icebreaker vessel unitless
lat_approxApproximate latitude of sampling near McMurdo Station; Antarctica; south is negative decimal degrees
lon_approxApproximate longitude of sampling near McMurdo Station; Antarctica; west is negative decimal degrees

[ table of contents | back to top ]

Deployments

McMurdo_IceBreakers_1957-2015

Website
Platform
McMurdo Station
Start Date
1956-10-28
End Date
2015-01-31
Description
Icebreaker vessels used in McMurdo Sound for the seasons 1957 to 2015: Atka Polar star    Polar sea Oden Glacier Krasin Edisto Burton island Staten island         Vladimir ignatyuk Healy Northwind    Southwind    Eastwind   Westwind    


[ table of contents | back to top ]

Project Information

Food web dynamics in an intact ecosystem: the role of top predators in McMurdo Sound (McMurdo Predator Prey)


Coverage: McMurdo Sound, Antarctica


Extracted from the NSF award abstract: The research project investigates the importance of top down forcing on pelagic food webs. The relatively pristine Ross Sea includes large populations of upper-level predators such as minke and killer whales, Adélie and Emperor penguins, and Antarctic toothfish. This project focuses on food web interactions of Adélie penguins, minke whales, and the fish-eating Ross Sea killer whales, all of which exert foraging pressure on their main prey, crystal krill (Euphausia cyrstallorophias) and silver fish (Pleuragramma antarcticum) in McMurdo Sound. The investigators used a video- and acoustic-capable ROV, and standard biological and environmental sensors to quantify the abundance and distribution of phytoplankton, sea ice biota, prey, and relevant habitat data.  The sampling area included 37 stations across an 30 x 15 km section of McMurdo Sound, stratified by distance from the ice edge as a proxy for air-breathing predator access. This study will be among the first to assess top-down forcing in the Ross Sea ecosystem and will form the basis for multidisciplinary studies in the future. Map sampling stations


[ table of contents | back to top ]

Funding

Funding SourceAward
NSF Division of Polar Programs (NSF PLR)
NSF Division of Polar Programs (NSF PLR)
NSF Division of Polar Programs (NSF PLR)

[ table of contents | back to top ]

This document is created by info v 4.1f 5 Oct 2018 from the content of the BCO-DMO metadata database.    2020-02-23  12:36:03