Sonobuoy data used to collect whale acoustics from ARSV Laurence M. Gould and RVIB Nathaniel B. Palmer cruises LMG0103, NBP0103, and NBP0104 in the Southern Ocean in 2001 (SOGLOBEC project)

Website: https://www.bco-dmo.org/dataset/2384
Data Type: Cruise Results
Version: 1
Version Date: 2001-12-03

Project
» U.S. GLOBEC Southern Ocean (SOGLOBEC)

Program
» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
ContributorsAffiliationRole
Hildebrand, JohnUniversity of California-San Diego (UCSD-SIO)Principal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
Sonobuoy data used to collect whale acoustics from ARSV Laurence M. Gould and RVIB Nathaniel B. Palmer cruises LMG0103, NBP0103, and NBP0104 in the Southern Ocean in 2001 (SOGLOBEC project)


Coverage

Spatial Extent: N:-59.085 E:-61.652 S:-70.303 W:-77.127
Temporal Extent: 2001-03-21 - 2001-08-28

Dataset Description

Working Procedure:
A sonobuoy is deployed and monitored until it is out of range. The length of time the sonobuoy can be heard depends on the speed of the ship, the sonobuoy's direction relative to the ship and the prevailing sea, ice and weather conditions. When a whale is heard, an attempt is made to identify the species and note it. If a seal is heard, it is just noted as a seal. The sonobuoy was set to scuttle after 8 hours.

Questions regarding these data should be directed to:
John Hildebrand
Scripps Institution of Oceanography, UCSD
9500 Gilman Drive
La Jolla CA, 92093-0205

Email: jhildebrand@ucsd.edu

Last Updated February 22, 2006


Acquisition Description

A sonobuoy is deployed and monitored until it is out of range. The length of time the sonobuoy can be heard depends on the speed of the ship, the sonobuoy's direction relative to the ship and the prevailing sea, ice and weather conditions. When a whale is heard, an attempt is made to identify the species and note it. If a seal is heard, it is just noted as a seal. The sonobuoy was set to scuttle after 8 hours.


[ table of contents | back to top ]

Parameters

ParameterDescriptionUnits
cruiseid cruise identification
yearyear of cruise in YYYY format unitless
deployno sonobuoy deployment number
day_gmt day of month. GMT time DD
month_gmt month of year (01-12), GMT time MM
time_gmt time of day 24 hour clock, GMT HHmm
lat latitude, negative = South decimal degrees
lon longitude, negative = West decimal degrees
instinstrument, sonobuoy type:53B denotes DIFAR (directional fixing and ranging) sonobuoy, having a frequency range of 10 Hz to 2.5 kHz. 57B denotes an omnidirectional sonobuoy with a frequency range up to 40 kHz.
Mn Megaptera novaeangliae - humpback whale calls identified by the following codes:x = call detected x? = possible call - = no call
Bb Balaenoptera bonaerensis - Antarctic minke whale, see call codes above
Bp Balaenoptera physalus - fin whale, see call codes above
Bm Balaenoptera musculus - blue whale, see call codes above
Odt odontocete whale, see call codes above
Seal seal call, see call codes above
comments reason for sonobuoy deployment at that location, as a comment
range transmission range of sonobuoy


[ table of contents | back to top ]

Instruments

Dataset-specific Instrument Name
Sonobuoy
Generic Instrument Name
Sonobuoy
Dataset-specific Description
53B denotes DIFAR (directional fixing and ranging) sonobuoy, having a frequency range of 10 Hz to 2.5 kHz.57B denotes an omnidirectional sonobuoy with a frequency range up to 40 kHz.
Generic Instrument Description
A Sonobuoy is a relatively small (typically 4 inches, or 124 mm, in diameter and 36 inches, or 910 mm, long) expendable sonar system that is dropped/ejected from aircraft or ships conducting anti-submarine warfare or underwater acoustic research.


[ table of contents | back to top ]

Deployments

LMG0103

Website
Platform
ARSV Laurence M. Gould
Report
Start Date
2001-03-18
End Date
2001-04-13
Description
Acquisition Description
A sonobuoy is deployed and monitored until it is out of range. The length of time the sonobuoy can be heard depends on the speed of the ship, the sonobuoy's direction relative to the ship and the prevailing sea, ice and weather conditions. When a whale is heard, an attempt is made to identify the species and note it. If a seal is heard, it is just noted as a seal. The sonobuoy was set to scuttle after 8 hours.

NBP0103

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2001-04-24
End Date
2001-06-05
Description
Acquisition Description
A sonobuoy is deployed and monitored until it is out of range. The length of time the sonobuoy can be heard depends on the speed of the ship, the sonobuoy's direction relative to the ship and the prevailing sea, ice and weather conditions. When a whale is heard, an attempt is made to identify the species and note it. If a seal is heard, it is just noted as a seal. The sonobuoy was set to scuttle after 8 hours.

NBP0104

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
2001-07-22
End Date
2001-08-31
Description
Acquisition Description
A sonobuoy is deployed and monitored until it is out of range. The length of time the sonobuoy can be heard depends on the speed of the ship, the sonobuoy's direction relative to the ship and the prevailing sea, ice and weather conditions. When a whale is heard, an attempt is made to identify the species and note it. If a seal is heard, it is just noted as a seal. The sonobuoy was set to scuttle after 8 hours.


[ table of contents | back to top ]

Project Information

U.S. GLOBEC Southern Ocean (SOGLOBEC)


Coverage: Southern Ocean


The fundamental objectives of United States Global Ocean Ecosystems Dynamics (U.S. GLOBEC) Program are dependent upon the cooperation of scientists from several disciplines. Physicists, biologists, and chemists must make use of data collected during U.S. GLOBEC field programs to further our understanding of the interplay of physics, biology, and chemistry. Our objectives require quantitative analysis of interdisciplinary data sets and, therefore, data must be exchanged between researchers. To extract the full scientific value, data must be made available to the scientific community on a timely basis.



[ table of contents | back to top ]

Program Information

U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)


Coverage: Global


U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).



[ table of contents | back to top ]

Funding

Funding SourceAward
NSF Antarctic Sciences (NSF ANT)

[ table of contents | back to top ]