Ocean Reference Stations

Deployment Summary

This page provides a summary of the deployments at the three Ocean Reference Stations maintained by Drs. Robert Weller and Al Plueddemann and the Upper Ocean Process Group of the Woods Hole Oceanographic Institution with support from the NOAA Climate Program. The three ORS are: Stratus, NTAS, and WHOTS. Stratus was first deployed in October 2000. NTAS was first deployed in March, 2001. WHOTS, which is done in partnership with colleagues at the University of Hawaii, who are supported by the NSF, was first deployed in August, 2004. Figure 1 shows an overview map of the three ORS sites.

In the following tables of deployments, all times are in UTC. The time of deployment is the time the anchor was dropped. It takes about 5 hours for the anchor to fall to the sea floor and the mooring to settle out. The recovery time, unless otherwise noted, is the time the acoustic release separated from the anchor to start recovery. In the case of a mooring failure, recovery time is the time that the surface buoy began to drift away from the anchored site.

The positions are the surveyed anchor location; the watch circles are between 3.5 and 4.7 nautical miles, giving the positions an uncertainty of up to 2.5 nm.
Figure 1. Overview map of the location of the three Ocean Reference Stations.

Stratus Ocean Reference Station

StationDeploymentRecoveryLatitudeLongitude
Stratus 110/7/2000 20:4310/17/2001 12:3920° 09.42´ S85° 09.07´ W
Stratus 210/19/2001 19:4610/22/2002 12:5920° 08.60´ S85° 08.44´ W
Stratus 310/25/2002 0:1611/17/2003 12:3220° 10.48´ S85° 06.73´ W
Stratus 411/19/2003 20:3112/12/2004 10:4719° 45.95´ S85° 30.41´ W
Stratus 512/14/2004 18:2510/12/2005 10:4519° 44.74´ S85° 31.36´ W
Stratus 610/14/2005 17:5110/18/2006 12:4520° 02.67´ S85° 11.31´ W
Stratus 710/16/2006 17:5110/29/2007 10:5719° 45.28´ S85° 31.93´ W
Stratus 810/27/2007 18:2710/27/2008 10:4519° 37.36´ S85° 22.73´ W
Stratus 9 (1)10/25/2008 18:461/20/2010 11:3719° 42.65´ S85° 35.25´ W
Stratus 10 (2)1/17/2010 18:237/7/201019° 36.81´ S85° 23.12´ W
Stratus 114/6/2011 19:285/29/2012 12:3019° 41.48´ S85° 34.01´ W
Stratus 12 (3)5/27/2012 22:031/25/201419° 56.31´ S85° 17.56´ W
Stratus 133/7/2014 18:01 19° 37.47´ S84° 57.14´ W

Notes:

  1. Stratus 9 mooring parted a few hours before recovery
  2. Stratus 10 mooring parted July 7, 2010; mooring recovered April 7 2011
  3. Stratus 12 buoy adrift starting 01/25/14, rest of mooring on deck 03/03/14

Figure 2. Stratus anchor locations for deployments 1 through 13 plotted showing the bathymetry in meters. The Stratus anchor site has been moved between deployments in an effort to reduce the data loss associated with damage to instruments from entanglement with fishing gear. Alternate position are also chosen each year to allow the new mooring to be deployed while the old mooring is in the water, thus providing overlapping periods of data collection to support data quality control analyses.



NTAS Ocean Reference Station

StationDeploymentRecovery LatitudeLongitude
NTAS 13/30/2001 23:173/6/2002 10:0814° 49.97´ N51° 00.30´ W
NTAS 23/2/2002 22:182/16/2003 12:0614° 44.30´ N50° 56.82´ W
NTAS 3 (1)2/15/2003 5:472/15/2004 18:1014° 49.50´ N51° 01.30´ W
NTAS 42/21/2004 3:163/13/2005 14:2014° 44.43´ N50° 56.03´ W
NTAS 53/11/2005 19:352/28/2006 12:3914° 41.07´ N51° 02.64´ W
NTAS 62/25/2006 17:134/24/2007 9:3614° 45.0´ N50° 56.6´ W
NTAS 74/19/2007 18:367/29/2008 11:0714° 49.33´ N51° 00.82´ W
NTAS 87/28/2008 4:377/1/2009 11:2014° 45.13´ N50° 57.18´ W
NTAS 96/29/2009 17:3712/11/2010 9:1814° 49.54´ N51° 00.87´ W
NTAS 1012/2010/10 1:5811/28/2011 10:4514° 45.01´ N50° 57.01´ W
NTAS 11 (2)11/25/2011 17:555/2/2012 20:0014° 49.50´ N51° 01.05´ W
NTAS 1212/3/2012 21:1410/25/2013 9:5314° 44.95´ N50° 56.98´ W
NTAS 13 (3)10/22/2013 22:589/23/2014 2:0014° 49.52´ N51° 01.00´ W

Notes:

  1. NTAS3 recovery is estimated time mooring began to drift
  2. NTAS 11 mooring failed 05/02/12, buoy recovered 12/6/12
  3. NTAS 13 mooring failed 09/23/14, buoy recovered 10/28/14

Figure 3. NTAS anchor locations given by the red dots. Depth contours are in meters. NTAS typically alternates between two locations. The new mooring is deployed while the old mooring remains in the water, allowing collection of one or more days of overlapping data to support data quality control analyses.



WHOTS Ocean Reference Station

StationDeployment
Mon/day/yr
RecoveryLatitudeLongitude
WHOTS 18/13/2004 2:407/25/2005 17:1522° 46.00´ N157° 53.90´ W
WHOTS 27/28/2005 1:436/24/2006 18:3022° 46.03´ N157° 53.76´ W
WHOTS 36/26/2006 23:476/28/2007 15:2022° 46.03´ N157° 53.99´ W
WHOTS 46/25/2007 23:486/6/2008 17:2022° 40.21´ N157° 57.00´ W
WHOTS 56/5/2008 3:257/15/2009 16:5122° 46.06´ N157° 54.09´ W
WHOTS 67/11/2009 1:198/2/2010 17:1122° 39.99´ N157° 56.96´ W
WHOTS 77/29/2010 2:377/11/2011 16:2822° 46.01´ N157° 53.99´ W
WHOTS 87/7/2011 1:086/16/2012 17:4722° 40.16´ N157° 57.03´ W
WHOTS 96/14/2012 2:237/14/2013 16:1722° 46.07´ N 157° 53.96´ W
WHOTS 107/11/2013 4:267/20/2014 16:1722° 40.12´ N157° 57.01´ W
WHOTS 117/17/2014 2:40 22° 45.98´ N157° 53.96´ W


Figure 4. WHOTS anchor locations for deployments 1 through 11. Two alternating sites are used, allowing a new mooring to be deployed while the old mooring remains in the water. The overlapping data support quality control analyses.






Last updated: October 26,2016