26315
AFSC/NMML: Small cetacean aerial survey in Alaskan waters, 1997-1999
AFSC/NMML: Small cetacean aerial survey in Alaskan waters, 1997-1999
Data Set
Published / External
23107
Cetacean Assessment and Ecology Program
Project
Completed
1997
Aerial surveys were conducted to produce abundance estimates for the three Alaska stocks of harbor porpoise. Surveys occurred from May to July 1997 for the Southeast Alaska stock, May to July 1998 for the Gulf of Alaska stock, and June to July 1999 for the Bering Sea stock. Two primary observers observed from bubble windows on the left and right side of the plane. A belly window observer with a view directly down along the trackline collected sightings that were matched to the side observers and used to estimate a correction factor for perception bias that was specific to harbor porpoise in Alaskan waters.
The primary objective was to collect line-transect data for abundance estimation, density, and distribution for the three stocks of harbor porpoise in Alaska waters and develop a correction factor for perception bias. The data was also used to estimate abundance, density, and distribution for Dall's porpoise throughout the study region.
Loaded by FGDC Metadata Uploader, batch 6773, 08-10-2015 15:48
The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:
- Taxonomy (FGDC:taxonomy)
Theme
ISO 19115 Topic Category
biota
Theme
ISO 19115 Topic Category
oceans
Theme
abundance
Theme
distribution
Temporal
summer
Spatial
Alaska
National Marine Mammal Laboratory
Seattle
WA
United States
Data Set
None Planned
Table (digital)
The user is responsible for the results of any application of this data for other than its intended purpose.
NOAA denies liability if the data are misused.
NA
Aircraft
NA
26316
csv file
csv file
Published / External
Completed
97-99AALL
Loaded by FGDC Metadata Uploader, batch 6773, 08-10-2015 15:48
Data File
97-99AALL
Year
NUMBER
No
No
Active
Year of survey
1997 - 1999
Event
Unknown
No
No
Active
Event code: C=observer rotation, 1=left observer sighting, 2=belly observer sighting, 3=right observer sighting, 4=off effort sighting, 5=begin effort, 6=end effort, 7=environmental change, 9=comment
Leg_no
Unknown
No
No
Active
Leg number
Line_no
Unknown
No
No
Active
Line number
Date
NUMBER
No
No
Active
Date
1 - 53
Time
NUMBER
No
No
Active
Time (AK)
1 - 7781
Latitude
NUMBER
No
No
Active
Latitude
53.7782 - 61.154
Longitude
NUMBER
No
No
Active
Longitude
130.8902 - 165.0623
Speed
Unknown
No
No
Active
Plane speed
Altitude
Unknown
No
No
Active
Plane altitude
From_Waypoint
Unknown
No
No
Active
Waypoint number surveying from
To_Waypoint
Unknown
No
No
Active
Waypoint number surveying to
Left_Observer
Unknown
No
No
Active
Left side observer code
Belly_Observer
Unknown
No
No
Active
Belly observer code
Right_Observer
Unknown
No
No
Active
Right side observer code
Recorder
Unknown
No
No
Active
Recorder code
Cloud_Cover
Unknown
No
No
Active
Percentage cloud cover estimate
Beaufort
Unknown
No
No
Active
Beaufort sea state numeric code
Glare_Left
Unknown
No
No
Active
Left side glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
Glare_Belly
Unknown
No
No
Active
Belly position glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
Glare_Right
Unknown
No
No
Active
Right side glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
Vis_Left
Unknown
No
No
Active
Left side visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
Vis_Belly
Unknown
No
No
Active
Belly position visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
Vis_Right
Unknown
No
No
Active
Right side visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
Light_Meter
Unknown
No
No
Active
Light meter reading
Count
Unknown
No
No
Active
Best group size estimate
Angle
Unknown
No
No
Active
NA
species
Unknown
No
No
Active
Species code: ba=minke whale, bp=fin whale, cu=Northern fur seal, dl=beluga whale, ej=Steller sea lion, el=sea otter, er=gray whale, lo=Pacific white-sided dolphin, mn=humpback whale, ob=object, oo=killer whale, or=walrus, pd=Dall's porpoise, pm=sperm whale, pp=harbor porpoise, pv=harbor seal, ss=salmon shark, ub=unidentified balaenopterid, uc=unid cetacean, ud=unid dolphin/porpoise, um=unid marine mammal, up=unid pinniped, uw=unid whale, zi=Cuviers beaked whale
observer
Unknown
No
No
Active
Code of observer who made sighting
Behavior
Unknown
No
No
Active
Behavior code: 1=with calf, 2=harassment, 3=breach, 4=feeding
Comments
Unknown
No
No
Active
Comment
Data Steward
1997
Person
Waite, Janice
janice.waite@noaa.gov
7600 Sand Point Way, NE
Seattle
WA
98115-6349
206-526-6554
Distributor
1997
Organization
National Centers For Environmental Information (Boulder)
NCEI-Boulder
E/GC 325 Broadway
Boulder
CO
80305-3328
303-497-6826
https://www.ngdc.noaa.gov/
Metadata Contact
2015-08-10
Person
MC, Metadata Coordinators
AFSC.metadata@noaa.gov
Originator
2015-08-10
Organization
Alaska Fisheries Science Center
AFSC
afsc.webmaster@noaa.gov
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
(206) 526-4000
(206) 526-4004
https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
AKFSC Home Page
Online Resource
0700-1700 Pacific Time
Point of Contact
2015-08-10
Person
Clapham, Phillip
phillip.clapham@noaa.gov
Ground Condition
-165
-130
62
54
Alaskan waters from Dixon Entrance to Bristol Bay
Range
1997
1999
Unclassified
The data is available at http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0131991
There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.
User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement
of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.
http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0131991
1997
Organization
National Centers For Environmental Information (Boulder)
cvs file with effort and sighting data
csv (comma-separated values)
CSV - Comma Separated Values (Text)
http://fishbull.noaa.gov/1083/hobbs.pdf
Online Resource
Hobbs and Waite. 2010. Abundance of harbor porpoise (Phocoena phocoena) in three Alaskan regions, corrected for observer errors due to perception bias and species misidentification, and corrected for animals submerged from view. Fisheries Bulletin 108:251-267.
Excel
All marine mammal species were recorded. Gaps in the survey occurred due to bad weather, particularly in the Gulf of Alaska south of Prince William Sound and south of the west end of the Alaska Peninsula. The data include possible doublecounts between observers. The belly window observer was an independent observer and matches between belly window and side window sightings were used to produce a correction factor for perception bias.
Data was edited each night after collection. Effort lines and sightings were plotted in ArcGis to assure accuracy of positional data.
No
0
Yes
No
Unknown
NCEI-MD
Unknown
IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.
1
NA
26316
Entity
csv file
gov.noaa.nmfs.inport:26315
Janice Waite
2015-08-10T15:47:39
SysAdmin InPortAdmin
2024-01-15T12:08:04
2018-11-27
Alaska Fisheries Science Center
AFSC
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
http://www.afsc.noaa.gov
0700-1700 Pacific Time
1001
Public
No
2018-11-27
1 Year
2019-11-27
Kingdom
Animalia
Genus
Phocoena
Species
phocoena
Harbor porpoise
Genus
Phocoenoides
Species
dalli
Dalls porpoise
csv file
97-99AALL
AFSC
Year
Year of survey
AFSC
1997
1999
Event
Event code: C=observer rotation, 1=left observer sighting, 2=belly observer sighting, 3=right observer sighting, 4=off effort sighting, 5=begin effort, 6=end effort, 7=environmental change, 9=comment
AFSC
Leg_no
Leg number
AFSC
Line_no
Line number
AFSC
Date
Date
AFSC
1
53
Time
Time (AK)
AFSC
1
7781
Latitude
Latitude
AFSC
53.7782
61.154
Longitude
Longitude
AFSC
130.8902
165.0623
Speed
Plane speed
AFSC
Altitude
Plane altitude
AFSC
From_Waypoint
Waypoint number surveying from
AFSC
To_Waypoint
Waypoint number surveying to
AFSC
Left_Observer
Left side observer code
AFSC
Belly_Observer
Belly observer code
AFSC
Right_Observer
Right side observer code
AFSC
Recorder
Recorder code
AFSC
Cloud_Cover
Percentage cloud cover estimate
AFSC
Beaufort
Beaufort sea state numeric code
AFSC
Glare_Left
Left side glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
AFSC
Glare_Belly
Belly position glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
AFSC
Glare_Right
Right side glare code: 1=no glare problems, 2=glare problems affects search, 3=severe glare
AFSC
Vis_Left
Left side visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
AFSC
Vis_Belly
Belly position visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
AFSC
Vis_Right
Right side visibility code: 1=excellent, 2=very good, 3=good, 4=fair, 5=poor, 6=unacceptable
AFSC
Light_Meter
Light meter reading
AFSC
Count
Best group size estimate
AFSC
Angle
NA
AFSC
species
Species code: ba=minke whale, bp=fin whale, cu=Northern fur seal, dl=beluga whale, ej=Steller sea lion, el=sea otter, er=gray whale, lo=Pacific white-sided dolphin, mn=humpback whale, ob=object, oo=killer whale, or=walrus, pd=Dall's porpoise, pm=sperm whale, pp=harbor porpoise, pv=harbor seal, ss=salmon shark, ub=unidentified balaenopterid, uc=unid cetacean, ud=unid dolphin/porpoise, um=unid marine mammal, up=unid pinniped, uw=unid whale, zi=Cuviers beaked whale
AFSC
observer
Code of observer who made sighting
AFSC
Behavior
Behavior code: 1=with calf, 2=harassment, 3=breach, 4=feeding
AFSC
Comments
Comment
AFSC