Marine Mammal Abundance Survey - Leg 1Entry ID: seamap296
Abstract: The survey was performed from 09 July 1995 to 03 August 1995, starting in Norfolk, VA and ending in Woods Hole, MA. The study area, covering approximately 39,200 nmi2, was in the slope waters from Chesapeake Bay, VA to Cape Cod, MA. Most of the survey was between 10 nautical miles (nmi) inshore of the 50 fathom contour and 10nmi offshore of the 1000 fathom contour. This survey was part of a large scale marine mammal sighting survey which consisted of two legs (each approximately a month long) where two ships were used during each leg, with an addition leg in which a plane was used to survey for six weeks. The entire study area was from Chesapeake Bay, VA, USA to the Gulf of St. Lawrence, Canada.
Purpose: The objectives of this leg of the survey were to: 1) Determine the spatial distribution and estimate the abundance of marine mammals found in the above study area. 2) Determine if spatial distribution patterns of marine mammals are correlated with hydrographic features, such as, water depth, temperature or salinity, or with biological features, such as zooplankton distribution.
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.
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: 440
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 220.127.116.110
Data Set Citation
Dataset Originator/Creator: NOAA Northeast Fisheries Science Center (NEFSC)
Dataset Title: Marine Mammal Abundance Survey - Leg 1
Dataset Series Name: OBIS-SEAMAP
Dataset Release Date: 2005-08-17 19:25:23.992499-04
Dataset Release Place: http://seamap.env.duke.edu/
Dataset Publisher: OBIS-SEAMAP
Data Presentation Form: vector digital data
This data set description is a member of a collection. The collection is described in
Start Date: 1995-07-10Stop Date: 1995-08-02
Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters
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: 0.159
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; Cruise No. PE 95-01; Marine Mammal Abundance Survey - Leg1. 1995. Woods Hole, MA.
Creation and Review Dates
DIF Creation Date: 2005-05-19
Last DIF Revision Date: 2008-01-13