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DECAF - AUTEC Beaked whales - Multiple Sensors - Click counts
Marques, T.A., L. Thomas, J. Ward, N. DiMarzio, P. L. Tyack. 2009. Estimating cetacean population density using fixed passive acoustic sensors: An example with Blainville’s beaked whales. Journal of the Acoustical Society of America. 125(4):1982-1994
Contact: Ward, Jessica

Also accessible through:
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Data on beaked whales recorded at the Atlantic Undersea Test and Evaluation Center in the Tongue of the Ocean, Bahamas in August/September 2007. Click counts. more

This archive contains data on echolocation clicks of Blainville's beaked whale (Mesoplodon densirostris) recorded at AUTEC during a 6-day period in spring 2005. The data were used in estimating M. densirostris density as documented in the paper Marques et al. (2009). There are data files containing click counts per minute per hydrophone, files containing numbers of false positive detections from a manual analysis, and files giving information about georeferenced tracks of tagged whales and associated vocalization timings. Each record (observation) represents number of clicks detected during one minute at one of 82 hydrophones. Species identification for automatic click detections is unknown and are assigned as Odontocete. Manually verified click detections have been assigned to appropriate family or genus by a trained acoustician for a sample of thirty 10-minute files. Manually-verified non-biological sources are recorded to species nan. Some automated detections may be from non-biological sources; False detection analysis suggest this will occur <3% of the time. The effect of occasional system tests and differences in frequency response of hydrophones on automated detection and classification has not been quantified. Time zone is GMT. Hydrophone locations are only approximate. Related datasets from tagged beaked whales are available at and Original data can be downloaded at under Case Study 3: Beaked whale data Dataset credit = Density Estimation of Cetaceans from passive Acoustic Fixed sensors (DECAF) (

Biology > Mammals
Marine/Coastal, A, North Atlantic, Physeter macrocephalus Linnaeus, 1758, Ziphiidae Gray, 1850

Geographical coverage
A, North Atlantic [Marine Regions]

Temporal coverage
26 April 2005 - 2 May 2005

Taxonomic coverage
Physeter macrocephalus Linnaeus, 1758 [WoRMS]
Ziphiidae Gray, 1850 [WoRMS]

Naval Undersea Warfare (NUWC), more

Related datasets
Published in:
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more
Other relations:
DECAF - AUTEC Beaked Whales - Multiple Sensors - DTag Seafloor array presence, more
DECAF - AUTEC Beaked Whales - Single Sensor case study, more
DECAF - AUTEC Beaked Whales - Multiple Sensors - Dtag, more

Based on this dataset
Marques, T.A. et al. (2009). Estimating cetacean population density using fixed passive acoustic sensors: an example with Blainville’s beaked whales. J. Acoust. Soc. Am. 125(4): 1982–1994., more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2012-11-23
Information last updated: 2016-06-29
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy