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Dataset Overview | National Centers for Environmental Information (NCEI)

Small cetacean aerial survey conducted in Alaskan waters by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 1997-05-08 to 1999-07-04 (NCEI Accession 0131991)

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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.
  • Cite as: Hobbs, Rod; Waite, Janice (2015). Small cetacean aerial survey conducted in Alaskan waters by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 1997-05-08 to 1999-07-04 (NCEI Accession 0131991). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0131991. Accessed [date].
gov.noaa.nodc:0131991
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  • Originator data format
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 1997-05-08 to 1999-07-04
Spatial Bounding Box Coordinates
West: -165.0623
East: -130.8902
South: 53.7782
North: 61.154
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2015-10-06
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: UDBP0A
Purpose 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.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Hobbs, Rod; Waite, Janice (2015). Small cetacean aerial survey conducted in Alaskan waters by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 1997-05-08 to 1999-07-04 (NCEI Accession 0131991). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0131991. Accessed [date].
Cited Authors
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Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords Originator Keywords
  • abundance
  • distribution
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Originator Place Names
  • Alaska
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Hobbs, Rod; Waite, Janice (2015). Small cetacean aerial survey conducted in Alaskan waters by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 1997-05-08 to 1999-07-04 (NCEI Accession 0131991). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0131991. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2015-10-06T17:49:09Z - NCEI Accession 0131991 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Data Type: LATITUDE (measured); Units: Decimal degrees; Observation Type: in situ; Sampling Instrument: GPS.
  • Data Type: LONGITUDE (measured); Units: decimeter; Observation Type: in situ; Sampling Instrument: GPS.
Acquisition Information (collection)
Instrument
  • binoculars
  • GPS
Platform
  • AIRCRAFT
Last Modified: 2023-03-15T01:25:51Z
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