26315 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 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 NOAA National Centers for Environmental Information NCEI ncei.info@noaa.gov https://ror.org/04r0wrp59 https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. Online Resource Originator 2015-08-10 Organization Alaska Fisheries Science Center AFSC afsc.webmaster@noaa.gov https://ror.org/01h7fye62 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. https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0131991 1997 Organization NOAA National Centers for Environmental Information https://ror.org/04r0wrp59 cvs file with effort and sighting data csv (comma-separated values) CSV - Comma Separated Values (Text) https://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 gov.noaa.nmfs.inport:26315 Janice Waite 2015-08-10T15:47:39 SysAdmin InPortAdmin 2026-03-04T19:17:19 2018-11-27 Alaska Fisheries Science Center AFSC 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov 0700-1700 Pacific Time 1001 Public No 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