Sightings for AN/AQS-20 Sonar Test Event - December 2013

HDR Environmental, Operations and Construction, Inc.

Dataset credit

The U.S. Navy Marine Species Monitoring Program


Primary contact Jennifer Latusek-Nabholz HDR Environmental, Operations and Construction, Inc.
Data entry Ei Fujioka Duke University



Aerial surveys for marine species monitoring occurred 10 through 12 December 2013 for an AN/AQS-20 (Q-20) sonar system test event. These surveys were conducted off the west coast of Florida in the Naval Surface Warfare Center Panama City Division (NSWC PCD) Study Area in the Gulf of Mexico. The Q-20 is a high-frequency active sonar (HFAS) system used in mine detection and countermeasures.


U.S. Navy marine protected species surveys for Q-20 sonar testing

Supplemental information

[2020-09-30] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS).
Turtles: Testudines (173749) => Testudines (948936)




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 OBIS-SEAMAP)
sighting_noSighting No.
obs_dateDate of observation
sp_obsSpecies name recorded
sp_tsnTaxonomic Serial Number added by OBIS-SEAMAP
obs_countGroup size (best estimate)
highGroup size (high estimate)
lowGroup size (low estimate)
calvesNumber of calves (no calves sighted)
obs_timeStart time (local time zone)
stop_timeStop time (local time zone)
bssBaufort sea state
latitudeLatitude in decimal degrees
longitudeLongitude in decimal degrees
vert_angleVertical angle in degrees
bearingBearing angle in degrees
distanceDistance off Track (km and nmi)
distance_kmNumeric distance off track km parsed out from distance
distance_nmiNumeric distance off track (nmi) parsed out from distance
headingHeading in degrees
bottom_depthBottom depth estimated by mapped figures
bottom_depth_mBottom depth (m) parsed out from bottom_depth
bottom_depth_ftBottom depth (ft) parsed out from bottom_depth
photo_videoFlag indicating photo or video was taken (Yes/No)
focal_followFocal follow (Yes/No)
behaviorBehavioral summary
geomGeometry field added by OBIS-SEAMAP
Marine mammals4
Sea turtles22
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2013-10-12
Date, End2013-12-12
Temporal prec.111111
Latitude29.78 - 30.16
Longitude-86.08 - -85.68
Coord. prec.3 decimal digits
Data typeAnimal sighting
Traveled (km)0
Contr. throughNavy
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