Sightings for AN/AQS-20 Sonar Test Event - April-May 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.



Aerial surveys for marine-species monitoring occurred during 27 April through 02 May 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 protected marine species monitoring during Q-20 sonar testing

Supplemental information





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)
count_highGroup size (high)
count_lowGroup size (low)
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
distance_orgDistance off track km (nmi) in original text
distance_kmNumeric distance off track km parsed out from distance_org
distance_nmiNumeric distance off track (nmi) parsed out from distance_org
headingHeading in degrees
bottom_depth_orgBottom depth m (ft) in original text. Bottom depths were estimated by mapped figures. Precise estimation is not listed here.
bottom_depth_mBottom depth (m) parsed out from bottom_depth_org
bottom_depth_ftBottom depth (ft) parsed out from bottom_depth_org
photos_videoFlag of photo or video was taken (Yes/No)
focal_followFocal follow (Yes/No)
behaviorBehavioral Summary
geomGeometry field added by OBIS-SEAMAP
Marine mammals1
Sea turtles39
Rays and sharks1
Other species0
Non spatial0
Non species0
Date, Begin2013-04-28
Date, End2013-05-02
Temporal prec.111111
Latitude29.68 - 30.21
Longitude-86.51 - -86.02
Coord. prec.3 decimal digits
Data typeAnimal sighting
Traveled (km)0
Contr. throughNavy
Sharing policy CC-BY (All)
Shared with OBIS
GBIF (via DOI)
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See metadata in FGDC XML
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