Dataset: sonobuoy_whale

Name: 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)
Published: 2001-12-03
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.2384.1

Spatial Extent: N:-59.085 E:-61.652 S:-70.303 W:-77.127

Temporal Extent: 2001-03-21 - 2001-08-28

Project:

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Program:

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

Principal Investigator:

Dr John Hildebrand (University of California-San Diego, UCSD-SIO)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2001-12-03

Restricted:

Validated:

Yes

Current State:

Final no updates expected

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)

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)

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2001-12-03	National Oceanographic Data Center (NODC)	0112169	2013-08-19
2001-12-03	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.2384.1	2019-03-06

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

Methods & Sampling

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.

Data Files

File
sonobuoy_whale.csv (Comma Separated Values (.csv), 13.62 KB) MD5:00224728a009b3900f40a9872e48843f Primary data file for dataset ID 2384

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Antarctic Sciences	ANT-9910007

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
LMG0103		2001-03-18	ARSV Laurence M. Gould	Richard Limeburner (Chief Scientist)	data info
NBP0103	GLOBECI	2001-04-24	RVIB Nathaniel B. Palmer	Peter H. Wiebe (Chief Scientist)	data info
NBP0104	GLOBECII	2001-07-22	RVIB Nathaniel B. Palmer	Peter H. Wiebe (Chief Scientist)	data info

Instruments

Sonobuoy

Supplied 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.

Instrument Type

Generic Name: Sonobuoy

Generic 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.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	cruise identification		cruiseid
year	year of cruise in YYYY format	unitless	year
deployno	sonobuoy deployment number		deployno
day_gmt	day of month. GMT time	DD	day_gmt
month_gmt	month of year (01-12), GMT time	MM	month_gmt
time_gmt	time of day 24 hour clock, GMT	HHmm	time_gmt
lat	latitude, negative = South	decimal degrees	lat
lon	longitude, negative = West	decimal degrees	lon
inst	instrument, 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.		instrument
Mn	Megaptera novaeangliae - humpback whale calls identified by the following codes: x = call detected x? = possible call - = no call		no_bcodmo_term
Bb	Balaenoptera bonaerensis - Antarctic minke whale, see call codes above		no_bcodmo_term
Bp	Balaenoptera physalus - fin whale, see call codes above		no_bcodmo_term
Bm	Balaenoptera musculus - blue whale, see call codes above		no_bcodmo_term
Odt	odontocete whale, see call codes above		no_bcodmo_term
Seal	seal call, see call codes above		no_bcodmo_term
comments	reason for sonobuoy deployment at that location, as a comment		comment
range	transmission range of sonobuoy		range

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