Summer Marine Mammal Survey 1995 (AJ-95-01 Part II)Entry ID: seamap290
Abstract: The ship survey was conducted from 06 August 1995 to 05 September 1995, beginning and ending in Woods Hole, MA. The study area covered approximately 12,600 nmi2 , and included the area bounded by Portland, ME to St. John, New Brunswick, to the southern tip of Nova Scotia. This cruise was part of a large scale marine mammal sighting survey which consisted of two legs (each approximately a month long) on each of two ships, and a six week aerial survey which was conducted concurrently with vessel operations. The entire study area was from Chesapeake Bay, VA, USA to the Gulf of St. Lawrence, Canada.
Purpose: The objectives of this survey were to: 1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Scotian shelf area using two different field collection and analysis methods. 2) Determine the spatial distribution and estimate the abundance of other cetaceans found in the above area. 3) Conduct a comparison between sighting rates and spatial distribution of harbor ... porpoises as seen by two different types of sighting platforms, a ship (the R/V ABEL-J) and an aircraft. 4) Determine spatial distribution patterns of harbor porpoises, and investigate if the patterns are correlated with hydrographic or biological features, such as, water depth, temperature or salinity. 5) Determine if harbor porpoises avoid this ship, and if so, at what distance. 6) Compare the abundance estimate and spatial distribution of harbor porpoises as seen this year with that seen in previous years.
SUPPLEMENTAL INFORMATION: In addition to the sighting data, effort data was recorded every half hour or whenever conditions change. This dataset, therefore, should be used with the effort data. Part I was conducted during July 9 - August 2, 1995.
CURRENTNESS REFERENCE: ground condition
SPATIAL DATA ORGANIZATION INFORMATION
Direct Spatial Reference: Vector
SDTS Point and Vector Object Type: Entity point
Point and Vector Object Count: 1420
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
NATIVE: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 18.104.22.1680
Data Set Citation
Dataset Originator/Creator: NOAA Northeast Fisheries Science Center (NEFSC)
Dataset Title: Summer Marine Mammal Survey 1995 (AJ-95-01 Part II)
Dataset Series Name: OBIS-SEAMAP
Dataset Release Date: 2005-08-17 19:49:07.236536-04
Dataset Release Place: http://seamap.env.duke.edu/
Dataset Publisher: OBIS-SEAMAP
Data Presentation Form: vector digital data
This description is a member of a collection. The collection is described in
Start Date: 1995-08-07Stop Date: 1995-09-04
Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > TOOTHED WHALES
Quality HORIZONTAL POSITIONAL ACCURACY REPORT: The latitude and longitude of the sighting was determined subsequently using an algorithm which dead reckonings between positions recorded on the effort data form.
VERTICAL POSITIONAL ACCURACY REPORT: The latitude and longitude of the sighting was determined subsequently using an algorithm which dead reckonings between positions recorded on the effort data form.
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 1. Not to use data contained in OBIS-SEAMAP in any publication, product, or commercial application without prior written consent of the original data provider. 2. To cite both the data provider and OBIS-SEAMAP appropriately after approval of use is obtained. 3. 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.
Data Set Progress
Distribution Size: 0.431
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: efujioka at duke.edu
LSRC A321 Box 90328
Province or State: NC
Postal Code: 27708
Role: TECHNICAL CONTACT
Email: dpalka at whsun1.wh.whoi.edu, Debra.Palka at noaa.gov
NMFS NORTHEAST FISHERIES SCIENCE CENTER 166 Water St.
City: Woods Hole
Province or State: MA
Postal Code: 02543
David Potter, National Marine Fisheries Service. CRUISE RESULTS; R/V ABEL-J; Cruise No. AJ-95-01 (Part II); Summer Marine Mammal Survey. 1995. Woods Hole, MA.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-06-07
Last DIF Revision Date: 2016-12-07