Temperature, salinity profiles and associated data collected in the Southern Oceans in support of the Global Ocean Ecosystem Dynamics project, 2001-04 to 2001-08 (NODC Accession 0001097)

Metadata Updated: February 27, 2019

The overall goal of the U.S. Southern Ocean GLOBEC program is to elucidate circulation processes and their effect on sea ice formation and Antarctic krill (Euphausia superba) distribution and to examine the factors that govern Antarctic krill survivorship and availability to higher trophic levels, including penguins, seals, and whales. Consequently, a primary objective of this second U.S. SO GLOBEC broad-scale survey cruise (NBP01 04) is to provide a description of the water mass distribution and circulation on the west Antarctic Peninsula (WAP) continental shelf in the region of Marguerite Bay. Historical hydrographic data for this region are limited, particularly during times other than austral summer. However, these data show that the water masses in the area consist of Antarctic Surface Water (AASW) in the upper 100 m to 120 m, a cold Winter Water layer at 80 m to 120 m, and a modified form of Upper Circumpolar Deep Water (UCDW) that covers the shelf below the permanent pycnocline at 150 m to 200 m. The UCDW, which is the source for the modified water on the WAP shelf, is found at the outer edge of the continental shelf at depths of 200 to 600 m. Thus, the first objective of the hydrography component is to fully describe the water mass distribution on the WAP continental shelf. This objective also includes showing how the water structure changes from the first regional survey, which was only two months ago. Circulation in the study region, which has been inferred from the limited hydrographic observations, suggests a clockwise gyre on the continental shelf near Marguerite Bay, upwelling of UCDW at specific sites in the study region, and across shelf flow of UCDW into Marguerite Bay at depth. However, the details of the circulation and the spatial and temporal variability of the flow remain to be determined. Thus, the second objective of the hydrography component is to provide a description of the large scale circulation for the portion of the WAP continental shelf included in the study region. The resulting circulation distribution can then be compared with drifter, moored current, and shipboard ADCP measurements as well as circulation derived from theoretical models.

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Dates

Metadata Date April 20, 2018
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 24, 2011 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

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Additional Metadata

Resource Type Dataset
Metadata Date April 20, 2018
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 24, 2011 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Klinck, John; Old Dominion University (2011). Temperature, salinity profiles and associated data collected in the Southern Oceans in support of the Global Ocean Ecosystem Dynamics project, 2001-04 to 2001-08 (NODC Accession 0001097). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date], NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -67.39
Bbox North Lat -64.64
Bbox South Lat -70.63
Bbox West Long -77.76
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://data.nodc.noaa.gov/cgi-bin/gfx?id=gov.noaa.nodc:0001097
Graphic Preview Type PNG
Guid gov.noaa.nodc:0001097
Harvest Object Id e1650fad-021b-44ba-a686-8ecb75aa2819
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2001-04-25
Temporal Extent End 2001-08-25

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