DECAF - AUTEC Sperm Whales - Multiple Sensors - Complete Dataset

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This archive contains data on sperm whales (Physeter macrocephalus) recorded at the Atlantic Undersea Test and Evaluation Center (AUTEC) in the Tongue of the Ocean, Bahamas in August/September 2007. Data are provided showing when sperm whales were detected on the range during the time period, details about the availability of the acoustic data used in the analysis and finally, the number and size of sperm whale groups localized.
This data represents sperm whale detections on the range during the complete study period. 44 days were monitored using an automatic detector for the presence of sperm whales: 12 Aug 2007 (julian day 224) – 24 Sept 2007 (julian day 267). This file documents when sperm whales were detected by the AUTEC range (the detections were verified by an observer).

This dataset used multiple hydrophones at AUTEC to detect sperm whale clicks. Click trains from individual whales were identified, enabling the number of diving whales to be estimated. Assuming that all diving sperm whale groups at a given time are detected by AUTEC, then density of diving sperm whales can be estimated.

The related dataset of number of whale groups localized can be found at http://seamap.env.duke.edu/dataset/680.

Original data can be downloaded at http://www.creem.st-and.ac.uk/decaf/decaf-data-files under Case Study 2: Sperm whale data

Hydrophone locations are approximate.

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)	Description
oid	Unique ID number (generated by OBIS-SEAMAP)
set	definition not provided
song	definition not provided
archive_filename	definition not provided
start_datetime	definition not provided
end_datetime	definition not provided
presence	definition not provided
sperm_whale_start_time	definition not provided
sperm_whale_stop_time	definition not provided
start_hyds	definition not provided
questionable_hydrophones	definition not provided
sperm_whales_on_quest_hyds	definition not provided
comments	definition not provided
hydrophone	definition not provided
sp_tsn	Taxonomic Serial Number added by OBIS-SEAMAP
sp_obs	Species name
obs_date	Date of the detection
obs_time	Time of the detection
latitude	Latitude in decimal degrees
longitude	Longitude in decimal degrees
depth	Depth
end_date	definition not provided
end_time	definition not provided
obs_count	definition not provided
geom	Geometry field added by OBIS-SEAMAP