State of the Climate - Global AnalysisEntry ID: gov.noaa.ncdc.C00672
Abstract: The Global Analysis page is prepared by and available from the National Climatic Data Center (NCDC). The page was first presented in 1998 as part of the State of the Climate Report. It is a framework that summarizes global observations of (surface and upper-air) temperature and precipitation data by placing the data into historical perspective. The Global Analysis page provides monthly, seasonal, and annual climate summaries, covering the topics: Global Surface Temperature, Global precipitation, Global Sea Surface Temperature, El Nino/Southern Oscillation (ENSO), (Lower and Mid) Tropospheric Temperatures, (Lower) Stratospheric Temperatures, Northern Hemisphere Snow Cover Extent (seasonal), and Northern Hemisphere Sea Ice Extent (seasonal).
Purpose: To make a wide range of climatic data available to researchers and the public.
CURRENTNESS REFERENCE: ground condition
Fees, if applicable, are displayed on the web page for obtaining these data, and fees are also dependent on customer order specifications. Please contact NCDC for further information on fees and terms for retrieving these data.
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Start Date: 1997-10-21Stop Date: 1997-12-01
Quality Digital audio tape (DAT) recordings of Weddell seal underwater vocalisations were obtained near Weddell seal breeding groups during the 1997 breeding season. These recordings were made off the Eastern Antarctic coastline near two Australian Antarctic stations. Eight recordings (three from the same location) were made near Casey during 21 October - 30 November and seven recordings (each at a ... different location) were made near Davis during 8 November - 1 December, for a total of 15 recordings made at 12 locations.
The recordings were made during a period of 24 h light, near groups of females with pups on the ice. The number, sex and age of the vocalising seals could not be determined, nor was it possible to determine the proximity of the seals to the hydrophone. Each recording lasted 1-2 hours.
At each recording site, one hole was drilled through the sea-ice and the hydrophone was lowered approximately 2 m below the ice. Sony TCD-D3 DAT recorders (frequency response 0.002-20kHz plus or minues 1 dB) were used to make the recordings. At casey, an ITC 6050C hydrophone (frequency response 0.002-30 kHz plus or minues 1 dB), with a built in preamplifier was connected to the Sony DAT recorder. At Davis, a Brüel and Kjær 8100 hydrophone equipped with a Brüel and Kjær 2635 charge preamplifier (frequency response 0.002-30 kHz plus or minus 1 dB) was used.
Access Constraints The dataset is available for download from the url given below. The dataset includes a pdf of the referenced paper and an excel spreadsheet of data.
Use Constraints This data set conforms to the PICCCBY Attribution License
Data Set Progress
Distribution Media: HTTP
Distribution Size: 3093 KB
Distribution Format: pdf, excel
Role: DIF AUTHOR
Phone: +1 506 648 5633
Fax: +1 506 648 5811
Email: terhune at unbsj.ca
Department of Biology PO Box 5050 University of New Brunswick
City: Saint John
Province or State: New Brunswick
Postal Code: E2L 4L5
Moors, H.B. and Terhune, J.M. (2004) Repetition patterns in Weddell seal (Leptonychotes weddellii) underwater multiple element calls, J. Acoust. Soc. Am, 116 (2): 1261-1270
Creation and Review Dates
DIF Creation Date: 2002-05-29
Last DIF Revision Date: 2008-04-10