Lamont-Doherty/LGL/NSF cruises

Lamont-Doherty / LGL

Dataset credit

Lamont-Doherty Earth Observatory

LGL Limited - Environmental Research Associates

National Science Foundation


Primary contact Meike Holst LGL Limited - Environmental Research Associates
Secondary contact Olivia Lee University of Colorado Museum of Natural History
Secondary contact Holly Smith National Science Foundation
Data entry Ei Fujioka Duke University
Data entry Connie Kot



Marine geophysical seismic research funded by the NSF includes a marine mammal and sea turtle monitoring and mitigation program. Protected Species Observers record all instances of marine mammals and turtles observed during surveys and while in transit to the survey site. The sightings data are also provided in 90 day reports available online here.


Sightings data are collected as part of a marine mammal and sea turtle monitoring program during academic seismic surveys.

Supplemental information

When the number of animals sighted was not available, it was filled with '1' to be conservative and noted in the Notes field. When the number of animals sighted was a range, the lower estimate was used to be conservative and noted in the Notes field. When the time was not available, it was filled with '00:00:00' and noted in the Notes field.

7/27/2011: This dataset was updated to include additional sightings and effort.

8/3/2011: Effort data were updated to fix transects crossing 180/-180 degrees longitude.

3/7/2012: Sightings were corrected and updated.


L-DEO, LGL and NSF. 2003-2008. Marine mammal and sea turtle monitoring during Lamont-Doherty Earth Observatory and NSF marine seismic surveys.
Holst, M. and M.A. Smultea. 2008. Marine mammal and sea turtle monitoring during Lamont-Doherty Earth Observatory's marine seismic program off Central America, February – April 2008. LGL Rep. TA4342-3. Report from LGL Ltd., King City, Ont., for Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, and National Marine Fisheries Service, Silver Spring, Maryland.



This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidUnique ID number (generated by SEAMAP)
recidRecord ID unique per survey
surveyidSurvey name
vesselVessel name
obs_datetimeSighting date and time
wdepthWater depth in meters
obs_locObserver location
dayDay of observation
monthMonth of observation
yearYear of observation
seismicSeismic line number
watchWatch (start or end or blank)
observer1Observer 1
observer2Observer 2
observer3Observer 3
observer4Observer 4
hourHour of observation
minuteMinute of observation
secondSecond of observation
deglatDegree latitude
minlatMinute latitude
deglongDegree longitude
minlongMinute longitude
latLatitude in decimal degrees
lonLongitude in decimal degrees
activitySeismic activity code (contact provider for the codes)
noofgunsNumber of guns
array_volTotal gun volume
arraydepthArray depth
seastateBeaufort sea state
visibilityVisibility (km)
lightordarkLight (day) or dark
glare_amntGlare amount code
glare_posGlare position (clock position)
sp_obsSpecies observed
sp_tsnITIS taxonomic serial number. This field added by OBIS-SEAMAP
obs_countNumber of animals
movementAnimal movement code
behavior1Behavior 1
behavior2Behavior 2
whereatPosition of the animal when first seen
wheretoDirection of the animal moving relative to the ship
reticlesReticles (number or estimate)
sight_distSighting distance
sight_cueSighting cue
idreliabilitySpecies identification confidence level
paceBehavior pace
geomdefinition not provided
Marine mammals1,226
Sea turtles77
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2003-05-28
Date, End2009-03-07
Temporal prec.111111
Latitude-20.80 - 89.14
Longitude6.74 - 356.87
Coord. prec.6 decimal digits
Data typeAnimal sighting
EffortYES (ID: 512)
Traveled (km)86,390
Effort hours10,702
Contr. through
Sharing policy CC-BY (All)
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics