NEFSC Deepwater Marine Mammal 2002

National Marine Fisheries Service

The cruise was conducted during 16 July 2 - August 2002. The area of operation was the western North Atlantic Ocean in the vicinity of Bear Seamount, located at approximately 39o 55' North latitude, 067o 25' West longitude, and along the continental slope south of George’s Bank.

The cruise objectives were twofold: (1) to explore the biodiversity in the vicinity of Bear Seamount and to collect nekton (especially fish and cephalopod) specimens in bottom and midwater samples from the maximum depths possible and (2) to collect information on the distributional relationship between cetaceans, particularly beaked whales and sperm whales, oceanographic features, and potential prey.

In addition to the sighting data, effort data was recorded every half hour or whenever conditions change.
This dataset, therefore, should be used with the effort data.

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
dataset	Dataset ID
lineno	Line number
cruise	Cruise ID
date	Date of the observation
time	Time of the observation (local time)
latitude	Latitude in decimal degrees
longitude	Longitude in decimal degrees
species	Species name
common	Common name
tsn	ITIS Taxonomic Serial Number added by OBIS-SEAMAP
scientific	Scientific name
group_	Group size
rank	Taxonomic rank
herdsize	Group size
transect	Transect No
leg	Leg No
excluded	For internal use
geom	Geometry field added by OBIS-SEAMAP
oid	Unique ID number (generated by OBIS-SEAMAP)