NMML Gulf of Alaska marine mammal survey 2003
National Marine Mammal Laboratory

Dataset credit

National Marine Mammal Laboratory

Contacts

RoleNameOrganization 
Primary contact Janice Waite National Marine Mammal Laboratory
Data entry Connie Kot Duke University

Citation

Abstract

Visual surveys for cetaceans were conducted in the Gulf of Alaska in association with a NOAA/Alaska Fisheries Science Center’s pollock stock assessment survey aboard the NOAA ship Miller Freeman from 26 June – 15 July 2003. Standard line-transect methods were used with three observers rotating through two 25x (Big Eye) binocular positions and one recorder on the flying bridge. Survey effort was conducted along the pollock survey transect lines, weather permitting. Additional effort was made while in transit to and from pollock survey waypoints. A total of 2,242 km of trackline were surveyed with 364 cetacean sightings (1,079 individuals). An additional 28 cetacean sightings were made (175 individuals) during off effort periods. Species included harbor porpoise (Phocoena phocoena), Dall’s porpoise (Phocoenoides dalli), Pacific white-sided dolphin (Lagenorhynchus obliquidens), killer whale (Orcinus orca), minke whale (Balaenoptera acutorostrata), fin whale (Balaenoptera physalus), humpback whale (Megaptera novaeangliae), sperm whale (Physeter macrocephalus), Baird’s beaked whale (Berardius bairdii), and Cuvier’s beaked whale (Ziphius cavirostris).

Purpose

The primary purpose was to conduct a marine mammal survey as a piggyback project to the NOAA/AFSC acoustic pollock survey in the Gulf of Alaska around Kodiak Island and the Kenai Peninsula and use sighting data to estimate the abundance of and to describe the distribution of whales and porpoises in the survey area.

Supplemental information

N/A

References

Attributes

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 noted 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
oidUnique ID (generated by SEAMAP)
recidRecord ID (generated by SEAMAP)
lineLine
dotDot (on/off effort)
code
obs_timeTime of observation
obs_dateDate of observation
latoriginOriginal latitude
longoriginOriginal longitude
dlatLatitude (decimal degrees)
dlongLongitude (decimal degrees)
effdistEffort distance
onoffOn/off effort
transectTransect number
beaufortBeaufort sea state
swellhtSwell height
swelldirSwell direction
tempTemperature
windspeedWind speed
shipcourseShip course
shspeedShip speed
fograinFog/rain
horizsun
vertsun
winddirWind direction
visibilityVisibility
leftobs
recorder
rightobs
sightnum
sightobs
cue
sightcode
angle
reticle
radialdist
mmdir
mmspeed
spcodeSpecies code
sp_obsSpecies observed
obs_countNumber of animals
sp_tsnSpecies ITIS TSN
highgsiz
lowgsiz
latitudeLatitude of sighting
longitudeLongitude of sighting
perpdistPerpendicular distance
distdtrack
commentsComment 1
comments2Comments 2
comments3Comments 3
comments4Comments 4
OBIS-SEAMAP ID820
Seabirds0
Marine mammals403
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species0
Total403
Date, Begin2003-06-27
Date, End2003-07-15
Temporal prec.111111
Latitude56.09 - 60.78
Longitude-156.90 - -146.72
Coord. prec.4 decimal digits
PlatformBoat
Data typeAnimal sighting
EffortYES (ID: 823)
Traveled (km)2,064
Effort hours99
Registered2012-02-22
Updated2012-08-16
StatusPublished
Sharing policy CC-BY-NC (Minimum)
Also availalbe from iOBIS
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics
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