AFSC/NMML: Bowhead Whale Aerial Abundance Survey off Barrow, Alaska, Spring 2011
Alaska Fisheries Science Center
Data Set
(DS)
| ID: 17334
| Published / External
Created: 2012-12-21
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Last Modified: 2024-01-15
Project (PRJ) | ID: 23107
ID: 17334
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | AFSC/NMML: Bowhead Whale Aerial Abundance Survey off Barrow, Alaska, Spring 2011 |
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Short Name | AFSC/NMML: Bowhead Whale Aerial Abundance Survey off Barrow, Alaska, Spring 2011 |
* Status | Completed |
Creation Date | 2011 |
Revision Date | |
• Publication Date | |
* » Abstract |
Aerial photographic surveys for bowhead whales were conducted near Point Barrow, Alaska, from 19 April to 6 June in 2011. Approximately 4,594 photographs containing 6,801 bowhead whale images were obtained (not accounting for resightings). The 2011 field season was very successful: we flew 36 out of 49 available days and conducted 49 flights in that time; we were grounded due to weather on 13 days. The longest period of time that we were grounded due to weather (low ceilings/fog) was three days. This occurred after the migration had slowed down, during a time when few whales passed the ice perches according to the ice-based visual survey. The 2011 migration was steady with several peaks (30 April, 4-5 May, 12 May), and then the migration rate slowed down considerably after 14 May. The photographs taken in 2011 are a significant contribution to the bowhead whale photographic catalogue. They will be used to calculate a population estimate that may be used for comparison with the 2011 ice-based estimate and will provide better precision in estimates of bowhead whale life-history parameters. |
* Purpose |
To photograph bowhead whales from the Western Arctic (Bering-Chukchi-Beaufort) stock during the annual spring migration past Barrow, Alaska in order to derive a capture-recapture abundance estimate. |
Notes |
Loaded by FGDC Metadata Uploader, batch 6114, 06-03-2015 14:59 The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export: - Taxonomy (FGDC:taxonomy) |
Other Citation Details | |
• Supplemental Information | |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | biota |
ISO 19115 Topic Category | oceans |
None | aerial |
None | distribution |
None | photo-identification |
Temporal Keywords
Thesaurus | Keyword |
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None | spring |
* Spatial Keywords
Thesaurus | Keyword |
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None | Beaufort Sea |
None | Chukchi Sea |
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Physical Location
• » Organization | National Marine Mammal Laboratory |
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• » City | Seattle |
• » State/Province | WA |
• Country | United States |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | Table (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability |
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. |
Data Set Credit | North Slope Borough in addition to NMFS provided funding for this project. |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2011 |
Date Effective To | |
Person | Mocklin, Julie |
Email Address | julie.mocklin@noaa.gov |
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* » Support Role | Distributor |
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* » Date Effective From | 2015-06-03 |
Date Effective To | |
Organization | National Centers For Environmental Information (Boulder) (NCEI-Boulder) |
Address |
E/GC 325 Broadway Boulder, CO 80305-3328 |
Email Address | |
Phone | 303-497-6826 |
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Mobile | |
URL | https://www.ngdc.noaa.gov/ |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2015-06-03 |
Date Effective To | |
Person | MC, Metadata Coordinators |
Email Address | AFSC.metadata@noaa.gov |
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Contact Instructions |
* » Support Role | Originator |
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* » Date Effective From | 2015-06-03 |
Date Effective To | |
Organization | Alaska Fisheries Science Center (AFSC) |
Address |
7600 Sand Point Way N.E., Building 4 Seattle, WA 98115 USA |
Email Address | afsc.webmaster@noaa.gov |
Phone | (206) 526-4000 |
Fax | (206) 526-4004 |
Mobile | |
URL | https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center |
Business Hours | 0700-1700 Pacific Time |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2015-06-03 |
Date Effective To | |
Person | Angliss, Robyn |
Address |
7600 Sand Point Way, NE Seattle, WA 98115-6349 |
Email Address | robyn.angliss@noaa.gov |
Phone | 206-526-4032 |
Fax | 206-526-6615 |
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Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -165 |
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* » E° Bound | -148 |
* » N° Bound | 72 |
* » S° Bound | 68 |
* » Description |
Chukchi and Beaufort Seas off Barrow, AK. |
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* » Time Frame Type | Range |
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* » Start | 2011-04 |
End | 2011-06 |
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Access Information
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Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
Data can be accessed at http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133937. |
• » Data Access Constraints |
There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. |
• Data Use Constraints |
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. |
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Distribution Information
Start Date | |
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» Download URL | http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133937 |
Distributor | National Centers For Environmental Information (Boulder) (NCEI-Boulder) (2015-06-03 - Present) |
File Name | |
Description |
Six csv files: Comments, GPS, GrpPassMark, Positions, Sightings, and Weather. |
File Date/Time | |
File Type (Deprecated) | csv (comma-separated values) |
Distribution Format | CSV - Comma Separated Values (Text) |
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Technical Environment
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csv files |
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Not applicable. |
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» Quality Control Procedures Employed |
After each survey day, data is quality controlled by checking all entered information from that day. All weather, sighting, group number, position, and comment data are checked for errors and spelling. |
Data Management
» Have Resources for Management of these Data Been Identified? | Yes |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | 0 |
» Do these Data Comply with the Data Access Directive? | Yes |
» Is Access to the Data Limited Based on an Approved Waiver? | No |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | Unknown |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» Actual or Planned Long-Term Data Archive Location | NCEI-MD |
» Approximate Delay Between Data Collection and Archiving | Unknown |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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. |
Lineage
» Lineage Statement |
The 2011 spring aerial abundance survey was conducted jointly by the North Slope Borough Department of Wildlife Management (NSB-DWM) and the National Marine Mammal Laboratory (NMML). Methodology was similar to earlier studies (Koski et al. 1992; Angliss et al. 1995). Surveys were conducted in an Aero Commander 690 with bubble windows in the two forward observer positions. The aircraft flew at an average air speed of ~217km/h (117kts) and altitude of 200m (656ft), and flew directly over bowhead whales during photographic passes. Photographs were taken with a Canon Mark III-1DS digital camera affixed with a Zeiss 85mm fixed f/1.4 Planar T* lens pointed directly downward through the aircraft's ventral camera port that was covered with optical quality glass. Shutter speed was typically 1/2500th second or faster. Aircraft altitude was recorded every 2 seconds with a portable Garmin 76CSx GPS unit and saved on a laptop computer. Robogeo software was used to embed latitude, longitude and altitude into the Exif metadata of each photograph. Calibration targets of known dimensions were photographed twice during the season, at the beginning and end of the survey. These calibration photographs were taken from the same altitudes flown during survey effort. Additionally, each flight began with a photographic pass over a table of known dimensions at a set altitude of 152m (500ft) to act as a daily check of altimeter performance. |
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Process Steps
Process Step Number | 1 |
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» Description |
NA |
Process Date/Time | |
Process Contact | Mocklin, Julie |
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Email Address | julie.mocklin@noaa.gov |
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Acquisition Information
Instruments
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FAQs
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Entity (ENT) | Comments | |
Entity (ENT) | GPS | |
Entity (ENT) | GrpPassMark | |
Entity (ENT) | Positions | |
Entity (ENT) | Sightings | |
Entity (ENT) | Weather | |
Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 17334 |
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Metadata Record Created By | SysAdmin InPortAdmin |
Metadata Record Created | 2012-12-21 17:00+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2024-01-15 12:08+0000 |
Metadata Record Published | 2018-11-27 |
Owner Org | AFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2018-11-27 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2019-11-27 |
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