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Short Citation:
Alaska Fisheries Science Center, 2023: AFSC/NMML Location-only satellite telemetry data for gray whales in the Bering and Chukchi Sea, 2012-2013,

Item Identification

Title: AFSC/NMML Location-only satellite telemetry data for gray whales in the Bering and Chukchi Sea, 2012-2013
Short Name: AFSC/NMML Location-only satellite telemetry data for gray whales in the Bering and Chukchi Sea, 2012-2013
Status: Completed
Publication Date: 2015

This dataset contains ARGOS location data (latitude and longitude in decimal format) and associated time (date and time) and location quality (as defined by Argos System, information. Data were collected using Wildlife Computers PTT-only SPOT 5 and Archival Mk10A satellite transmitters and PTT identification is also provided with the data. Satellite transmitters were deployed on gray whales (Eschrichtius robustus) in the Chukchi Sea.


These data were collected to monitor movements of gray whales using satellite telemetry


Loaded by FGDC Metadata Uploader, batch 7418, 10-23-2015 19:15

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Taxonomy (FGDC:taxonomy)

- Spatial Data Organization Information (FGDC:spdoinfo)


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category
None Satellite Telemetry

Temporal Keywords

Thesaurus Keyword
None spring 2013
None summer 2012

Physical Location

Organization: National Marine Mammal Laboratory
City: Seattle
State/Province: WA
Country: United States

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Table (digital)
Entity Attribute Overview:

The dataset contains location data (latitude and longitude) of gray whales satellite tagged in the Chukchi sea in 2012 and 2013. The location data contains five columns labeled latitude, longitude, time.utc,, lq. Details of the column contents are described under Detailed Descriptions of the metadata

Entity Attribute Detail Citation:

Metadata Detailed Descriptions

Distribution Liability:

The metadata contains location data for gray whales tagged with satellite transmitters between 2012 and 2013. Care should be taken to understand the elements in the metadata record and the distributor shall not be held liable for improper or incorrect use of the data. If assistance is needed, contact the distributor.

Data Set Credit: Funding for this study was provided by the Bureau of Ocean and Energy Management (former United States Minerals Management Service).

Support Roles

Data Steward

CC ID: 235779
Date Effective From: 2012
Date Effective To:
Contact (Person): Kennedy, Amy
Email Address:


CC ID: 235780
Date Effective From: 2015
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Metadata Contact

CC ID: 235765
Date Effective From: 2015-10-23
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address:


CC ID: 235767
Date Effective From: 2015-10-23
Date Effective To:
Contact (Person): Kennedy, Amy
Email Address:


CC ID: 235768
Date Effective From: 2015-10-23
Date Effective To:
Contact (Person): Zerbini, Alexandre
Email Address:


CC ID: 235769
Date Effective From: 2015-10-23
Date Effective To:
Contact (Person): Clapham, Phillip
Email Address:

Point of Contact

CC ID: 235766
Date Effective From: 2015-10-23
Date Effective To:
Contact (Person): Angliss, Robyn
Address: 7600 Sand Point Way, NE
Seattle, WA 98115-6349
Email Address:
Phone: 206-526-4032
Fax: 206-526-6615


Currentness Reference: observed

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 235764
W° Bound: -175.14
E° Bound: -152.5
N° Bound: 71.157
S° Bound: 62.862

Chukchi Sea and northern Bering Sea continental shelf, slope and basin

Extent Group 1 / Time Frame 1

CC ID: 235763
Time Frame Type: Range
Start: 2012-08
End: 2013-10

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available at NCEI:

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.

Distribution Information

Distribution 1

CC ID: 266095
Download URL:
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2015 - Present)

File contains satellite telemetry location data for gray whales.

File Type (Deprecated): csv (comma-separated values)
Distribution Format: CSV - Comma Separated Values (Text)

Data Quality

Completeness Report:

LQ Z and LQ removed by the argosfilter package were removed from the data. No duplicate features are present in the dataset

Conceptual Consistency:

not provided

Quality Control Procedures Employed:

Attribute accuracy is provided in the Location Quality (LQ) field. The current dataset has 6 LQ levels. Tagging is the GPS location where a satelitte transmitter was deployed and has GPS precision. The accuracy of remaining LQ levels are as defined by Argos Service and are classified in different classes of decreasing accuracy in the following order: 3, 2, 1, 0, A, B, and Z. LQs 3, 2, 1, and 0 have estimated accuracies of 150, 350, 1,000, and greater than;1,000 m. LQs A, B, and Z have no estimated location accuracy. LC Z are points for which the location process failed and were not included in the present dataset.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Unknown
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.



Argos users manual

CC ID: 235772
Contact Name: Argos
Publish Date: 1990-01-01
Extent Type: Range
Extent Start Date/Time: 2009-08-01
Extent End Date/Time: 2013-10-31

Process Steps

Process Step 1

CC ID: 235773

Satellite transmitters were attached to the body of gray whales using a pneumatic delivery system. Whales were tagged with the implantable configuration of the SPOT 5 and MK10A transmitters produced by Wildlife Computers (Redmond, WA). Transmitters were duty-cycled to optimize data collection in the feeding grounds and for maximizing tag longevity. Location-only tags (SPOT5) were programmed to transmit every day for 6 hours during daytime and 6 hours during night time. One archival tag (Mk10A) was programmed to sample and transmitter between 1 and 22hs every day from 1 September to 1 November and every second day afterwards. Histogram data sampling was enabled to sample maximum dive depth and time at depth in 14 bins (10, 20, 30, 40, 50, 75, 100, 125, 150, 200, 250, 300, 350 and >350m), and dive duration in 9 bins (2, 3, 5, 10, 15, 20, 25, 30 and >35 minutes). Time series messages were enabled with sampling intervals of 75 seconds every day for the first 30 days and every second day afterwards). Satellite tags were monitored by Argos Data Collection and Location Service receivers on NOAA TIROS-N weather satellites in sun-synchronous polar orbits. Locations were calculated by Argos from Doppler-shift data when multiple messages were received during a satellites passage overhead. Argos codes locations in quality classes (LQ) labeled B, A, 0, 1, 2, 3, in order of increasing accuracy. Argos locations were processed using the software R. The SDA Argos filter (Freitas et al., 2008) was applied to all location qualities in software R in order to remove locations that implied unlikely deviations from the tracks path as well as unrealistic travel rates. This filter requires two main parameters: turning angles and maximum speed of travel. The default value of turning angles (Freitas et al., 2008) was used and the maximum speed was assumed to be 18km/h. Distances between filtered locations were calculated assuming a great circle route.

Process Date/Time: 2014-01-01 00:00:00
Process Contact: Zerbini, Alexandre
Email Address:

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Satellite telemetry location data for gray whales

Catalog Details

Catalog Item ID: 28151
GUID: gov.noaa.nmfs.inport:28151
Metadata Record Created By: Janice Waite
Metadata Record Created: 2015-10-23 19:14+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+0000
Metadata Record Published: 2018-11-27
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-11-27
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-11-27