NMML Killer Whale Vessel Survey, Alaska Peninsula, 1992

National Marine Mammal Laboratory

From 9 July to 22 August, 1992, a part of a larger study, the Alaskan Peninsula was surveyed for killer whales (Orcinus orca) from the NOAA Brielyn Marie using line transect methodology. To provide adequate coverage throughout the area, the study was limited to areas of known killer whale concentrations. The vessel was 36.5 m (113 ft) long and had a bridge height of 6.0 m (18.5 feet).

The objectives of this study were as follows:

1) Develop a photographic identification catalog of each killer whale encountered, and its pod, to determine pod identity, distribution, and movements relative to annual survey effort,
2) Obtain minimum population estimated of killer whales in the central/eastern Aleutians and the south side of the Alaskan peninsula, and
3) Establish baseline data for detecting annual changes in abundance

N/A

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

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

Attributes in dataset

Attribute (table column)	Description
dataset
lineno
dupl
date
event
time
dtime
beaufort
weather
portvis
starvis
shiphead
latdeg
latmin
dlat
londeg
lonmin
dlong
pdisshor
pdismet
sdisshor
sdismet
pobs
recorder
sobs
species
common
tsn	ITIS Taxonomic Serial Number added by OBIS-SEAMAP
scientific
group
bowangle
reticles
numret
distshor
disshorm
estdisan
edismet
raddis
perpdis
dirtrav
observ
best
high
low
speed
comments
excluded
geom
oid	Unique ID number (generated by SEAMAP)