DECAF - AUTEC Beaked Whales - Multiple Sensors - DTag Seafloor array presence

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

The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

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	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 Taxonomic Serial Number added by OBIS-SEAMAP
sp_obs	Species observed
dive	DTAG deep dive number
year	definition not provided
julian_day	definition not provided
secondsn2year	definition not provided
hydrophone	definition not provided
presence_absence	definition not provided
x	definition not provided
y	definition not provided
z	definition not provided
heading	definition not provided
pitch	definition not provided
roll	definition not provided
associated_dtag_click_index	Index of associated click on DTag (dataset 685)
latitude	Approximate hydrophone latitude
longitude	Approximate hydrophone longitude
depth	Approximate hydrophone depth
geom	definition not provided