DECAF - AUTEC Beaked Whales - Multiple Sensors - DTag Seafloor array presence
Density Estimation of Cetaceans from passive Acoustic Fixed sensors (DECAF)

N/A

This archive contains data on ecolocation 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.

N/A

Each record represents a click detection on a seafloor array hydrophone from a single tagged whale. The click association to the DTAG click is available at http://seamap.env.duke.edu/dataset/685.
Automated and manually verified click detections from 82 seafloor hydrophones in a related dataset are available at http://seamap.env.duke.edu/dataset/677.
Original data can be downloaded at http://www.creem.st-and.ac.uk/decaf/decaf-data-files under Case Study 3: Beaked whale data
Time zone is GMT

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

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noteded below.

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 in dataset provided

Attribute (table column)	Description
oid	OBIS-SEAMAP dataset ID
series	DTag ID of associated click (SpeciesYear_Julianday)
obs_date	Observation date (GMT)
obs_time	Observation time (GMT)
obs_count	Number of calls
sp_tsn	ITIS species code
sp_obs	Species observed
dive	DTAG deep dive number
year
julian_day
secondsn2year
hydrophone
presence_absence
x
y
z
heading
pitch
roll
associated_dtag_click_index	Index of associated click on DTag (dataset 685)
latitude	Approximate hydrophone latitude
longitude	Approximate hydrophone longitude
depth	Approximate hydrophone depth