SEFSC GoMex Oceanic 1993 (W)
NOAA Southeast Fisheries Science Center (SEFSC)

Dataset credit

Southeast Fisheries Science Center, NOAA

Contacts

RoleNameOrganization 
Primary contact Lance Garrison NOAA Southeast Fisheries Science Center
Data entry Benjamin Best Duke University

Citation

Abstract

A winter marine mammals survey in Gulf of Mexico was conducted in 1993 by NOAA Southeast Fisheries Science Center to examine the distribution and estimate abundance of cetaceans in U.S. waters. The survey was followed by a similar spring survey in 1993. This dataset contains sightings of not only cetaceans but also other species including sea turtles, fish and shark observed during the ship survey.

During the 31 survey days, 10 species were sighted, including

Atlantic spotted dolphin
Clymene dolphin
Melon-headed whale
Pantropical spotted dolphin
Pygmy sperm whale
Short/Long-finned pilot whale
Sperm whale
Standard Bottlenose dolphin
Striped dolphin

The dataset is accompanied by transect data which is provided as a separate file.

Purpose

The purpose of this survey is to examine the distribution and estimate abundance of cetaceans in U.S. waters.

Specific objectives of this survey are:

1. Complete a line transect survey of the study area for marine mammals during daylight hours following prescribed transects.

2. Collect ichthyoplankton samples for the Southeast Area Monitoring and Assessment Program (SEAMAP) during the non-daylight hours using neuston, bongo and Tucker trawls.

3. Obtain associated environmental and oceanographic data.

Supplemental information

N/A

References

NOAA Southeast Fisheries Science Center. 1993. Cruise Results; Marine Mammals/Ichthyoplankton Survey; NOAA Ship Oregon II Cruise 93-01 (203).

Attributes

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noted below.

The dataset contains information necessary to locate the species sightings observed in the survey. The structure of the dataset was defined by NOAA Southeast Fisheries Science Center. Note that the dataset is a subset of the larger, complete dataset collected in the survey which includes environmental information. The columns before LineNo are applied to the shapefile only. The following information is not included in the dataset but will be found in the master data. For details, please contact NOAA Southeast Fisheries Science Center. Track; Speed; GPS Status; Observers; Wind direction; Weather; Sea state; Swell; Visibility; Turbidity; Sunlight; Water depth; Water color; Water temperature; Sighting angle; Effort status.

Attributes in dataset provided

Attribute (table column)Description
linenoLine number
cardCard
cruisenoCruise No.
dateDate of the sighting
timeTime of the sighting (local time)
latitudeLatitude in decimal degrees
longitudeLongitude in decimal degrees
trackTrack No
speedSpeed
gpswarningGPS Warning
leftobsLeft observer
rightobsRight observer
datarcdrdefinition not provided
windWind
weatherWeather code
seastateSea state
swellSwell
visibilityVisibility
versunposVertical sun position
radsunposRadial sun position
watercolorWater color
sightingnoSighting No.
shipidShip ID
oneffortIndicator of on or off effort
watertempWater temperature in degree Celsius
waterdepthWater depth
spcodeSpecies code defined by provider
species_tsnITIS Taxonomic Serial Number added by OBIS-SEAMAP
speciesSpecies name
scientificSpecies scientific name.
herdsizeGroup size
calvesNumber of calves
ontransectOn or off transect
cookiecttrCookie cutter
remoraRemora
glareGlare
gpclassGP class
behaviorBehavior code
cuetimeCue time
cuelatCue latitude
cuelonCue longitude
obsposObserver position
obscodeObservation code
sourceSource
reticleReticle
distanceDistance
bearingBearing
wdepthmWater depth in meters
geomGeometry field added by OBIS-SEAMAP
oidUnique ID number (generated by OBIS-SEAMAP)
OBIS-SEAMAP ID15
Seabirds610
Marine mammals45
Sea turtles0
Rays and sharks1
Other species180
Non spatial0
Non species1,066
Total1,902
Date, Begin1993-01-06
Date, End1993-02-12
Temporal prec.111111
Latitude26.03 - 29.33
Longitude-96.08 - -87.72
Coord. prec.4 decimal digits
PlatformBoat
Data typeAnimal sighting
EffortYES (ID: 16)
Traveled (km)4,140
Effort hours246
Registered2004-06-03
Updated2013-11-22
StatusPublished
Sharing policy CC-BY-NC (Minimum)
Also availalbe from iOBIS
OBIS-USA
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