NMML Killer Whale Vessel Survey, Alaska Peninsula, 1992
Entry ID: seamap137

[ Get Data ]
[ Update this Record ]

Summary
Abstract: From 9 July to 22 August, 1992, a part of a larger study, the Alaskan
Peninsula was surveyed for killer whales (Orcinus orca) from the NOAA Brielyn
Marie using line transect methodology. To provide adequate coverage throughout
the area, the study was limited to areas of known killer whale concentrations.
The vessel was 36.5 m (113 ft) long and had a bridge height of 6.0 m (18.5
feet).

Purpose: The objectives of this study were as follows: 1) Develop a
photographic identification catalogue of each killer whale encountered, and its
pod, to determine pod identity, distribution, and movements relative to annual
survey effort. 2) Obtain minimum population estimated of killer whales in the
central/eastern Aleutians and the south side of the Alaskan peninsula. 3)
Establish baseline data for detecting annual changes in abundance.

CURRENTNESS REFERENCE: ground condition

SPATIAL REFERENCE INFORMATION -
GEODETIC MODEL
Horizontal Datum Name: D_WGS_1984
Ellipsoid Name: WGS_1984
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224
Related URL
Description: Access data from the OBIS and OBIS-SEAMAP websites.
View entire list
Multimedia Sample
Small multimedia sample image
View full image

 
Geographic Coverage
Spatial coordinates   
  N: 57.94   S: 54.37   E: -153.78   W: -164.72

Data Set Citation
Dataset Originator/Creator: National Marine Mammal Laboratory
Dataset Title: NMML Killer Whale Vessel Survey, Alaska Peninsula, 1992
Dataset Series Name: OBIS-SEAMAP
Dataset Release Date: 2004-08-09 16:49:55.001136-04
Dataset Release Place: http://seamap.env.duke.edu/
Dataset Publisher: OBIS-SEAMAP
Data Presentation Form: vector digital data
Online Resource: http://nmml.afsc.noaa.gov/
Parent DIF
This data set description is a member of a collection. The collection is described in
OBIS-SEAMAP

Temporal Coverage
Start Date: 1992-08-01
Stop Date: 1992-08-07
Data Resolution
Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters
Platform
SHIPS Ancillary Description
Access Constraints ACCESS CONSTRAINTS: Open public unless otherwise noted.

DISTRIBUTION LIABILITY: Not to hold OBIS-SEAMAP liable for errors in the data.
While we have made every effort to ensure the quality of the database, we
cannot guarantee the accuracy of these datasets. Also please refer to Use
Constraints.
Use Constraints Not to use data contained in OBIS-SEAMAP in any publication, product, or
commercial application without prior written consent of the original data
provider. To cite both the data provider and OBIS-SEAMAP appropriately after
approval of use is obtained. Also please refer to Distribution Liability.
Data Set Progress
COMPLETE
Data Center
OBIS Spatial Ecological Analysis of Megavertebrate Populations Supplemental Info
Data Center URL: http://seamap.env.duke.edu/

Data Center Personnel
Name: PATRICK N. HALPIN
Phone: 919-613-8062
Email: phalpin at duke.edu
Contact Address:
Duke University
Box 90328
City: Durham
Province or State: NC
Postal Code: 27708
Country: USA
Distribution
Distribution Format: Shapefile
Personnel
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: 919-613-8021
Fax: 919-684-8741
Email: efujioka at duke.edu
Contact Address:
LSRC A321
Box 90328
City: Durham
Province or State: NC
Postal Code: 27708
Country: USA
View entire list
Publications/References
M. Dahleim and J. Waite. Abundance and Distribution of Killer Whales.
Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2007-01-22
Last DIF Revision Date: 2014-03-13
[ Update this Record ]


Link to Web Site