Apex Surface Mooring

Reference Designator
GI01SUMO
Array Name
Global Irminger Sea
Description
A Surface Mooring is a type of mooring that contains a surface buoy floating on the sea surface and instruments located at fixed depths through the water column. The surface buoy provides a platform on which to secure surface instruments, allowing for the collection of data in the air and in the water, as well as an antenna to transmit data to shore via satellite.
Latitude
59.934
Longitude
-39.467
Min Depth
0
Max Depth
2,800
Deployment Cruise Start Date Stop Date Mooring Asset Node Asset Sensor Asset Latitude Longitude Deployment Depth Water Depth
1 KN-221-4 09/10/2014 08/22/2015 CGMGI-01SUMO-00001 59.9337 -39.4738
2 AT-30-01 08/15/2015 07/19/2016 CGMGI-01SUMO-00002 59.9436 -39.5737
3 AR-07-01 07/10/2016 08/14/2017 CGMGI-01SUMO-00003 59.9341 -39.4673
4 AR21 08/05/2017 CGMGI-01SUMO-00004 59.9462 -39.4737
Metadata Start Date End Date Comment
GI01SUMO
Deployment: 1
9/15/14 9/15/14

Deployment 1 - deployed on 09/10/2014 and was fully functional. On 09/15/2014 all Fleet Broadband telemetry was lost

By Lori Garzio, on 7/21/16

GI01SUMO
Deployment: 1
9/26/14 9/26/14

Deployment 1 - Iridium ISU communications lost on 09/26/2014.

By Lori Garzio, on 7/21/16

GI01SUMO
Deployment: 1
2/15/15 8/15/15

Deployment 1 - starting on 02/15/2015, status data included leak detects in the buoy well and 03/27/2015 status data indicated a drop in battery voltage and loss of wind turbine input. This indicates catastrophic damage to the surface buoy. Upon recovery, the buoy was found to be primarily intact, but showed damage to the tower:

Missing components:
- Some METBK modules
- Port telemetry set (including one MELO beacon)
- FDCHP
- Port wind turbine missing one blade and a portion of another (out of a total of three blades)
- Both vane PV panels
- Two port buoy vent valves

Ice build-up on the tower in early March is speculated to be the cause for much of the damage.

By Lori Garzio, on 7/21/16

GI01SUMO
Deployment: 1
4/13/15 4/13/15

Deployment 1 - All communications with the buoy lost on 04/13/2015. One XEOS Melo beacon continued to provide location information through recovery.

By Lori Garzio, on 7/21/16

GI01SUMO
Deployment: 2
1/27/16 7/19/16

Deployment 2 - a period of violent weather caused power outages on multiple GI01SUMO instruments. Instruments are not sending data by telemetry and failure is expected. Note that functional instruments may continue to collect data using internal battery power and storage cards.
UPDATE: Upon recovery, water was found inside the buoy well. Thirteen gallons of water were siphoned out of the well; the remaining volume of water is unknown.

By Lori Garzio, on 7/6/16
Redmine Issue #9583

GI01SUMO
Deployment: 3
12/27/16

There is evidence of ice build-up on the surface buoy tower during two recent storms. The METBK instruments stopped working briefly during cold stormy weather on 12/27/2016, and the buoy may have temporarily laid over. A second storm event on 1/5/2017 caused some gaps in data from GI01SUMO-SBD12-06-METBKA000. One of the wind turbines is not producing any power, which may be an indication that it is iced over.

UPDATE 1/8/2017: Both wind turbines are disabled and may be iced over.

UPDATE 1/11/2017: The battery charge state has been declining steadily and power-reduction has been implemented. DCL12 and DCL16 have been shut off and the telemetry schedule has been reduced. Battery-powered instruments will continue to collect data.

UPDATE 1/15/2017: All DCLs have been shut down to conserve power. Battery-powered instruments will continue to collect data.

UPDATE 4/7/2017: With increasing daylight at this location, there is now sufficient power available from PV panels to re-establish limited high-bandwidth telemetry and data transmission. Instruments on DCL11 are sending data to shore. The backlog of data stored on instruments with batteries will slowly backfill over time.

By Lori Garzio, on 1/11/17
Redmine Issue #11758

New Note

Metadata Start Date End Date Comment
GI01SUMO
2/14/15, 7:00 PM 8/21/15, 8:00 PM

Deployment 1: Status data sent from the buoy included leak detects in the buoy well, drop in battery voltage, and loss of wind turbine input. Upon recovery, the buoy was primarily intact but several instruments were damaged and/or missing. Ice build-up on the tower is speculated to be the cause for much of the damage. No telemetered or recovered_host data expected. Functional instruments could continue to collect data using internal battery power and storage cards.

Id: 46 By: lgarzio

GI01SUMO
1/26/16, 7:00 PM 7/18/16, 8:00 PM

Deployment 2: A period of violent weather caused power outages on multiple instruments. No telemetered or recovered_host data expected. Functional instruments could continue to collect data using internal battery power and storage cards. Upon recovery, the buoy well was flooded.

Id: 47 By: lgarzio

GI01SUMO
12/26/16, 7:00 PM 4/6/17, 8:00 PM

Deployment 3: Wind turbines were disabled due to evidence of ice build-up on the surface buoy tower. The platform's battery charge state declined steadily. As of 2017-01-15, all DCLs were shut down and the telemetry schedule was reduced to conserve power. Battery-powered instruments should continue to collect data. UPDATE 2017-04-07: With increasing daylight at this location, sufficient power was generated by solar panels to re-establish limited high-bandwidth telemetry and data transmission. UPDATE: at recovery, wind turbines were missing their hubs and blades, and one solar panel was missing.

Id: 121 By: lgarzio

GI01SUMO
10/11/17, 8:00 PM

Deployment 4: at 10:03 UTC on 12 October 2017 the Irminger Sea Surface Mooring stopped all communications. Current state of the buoy and mooring infrastructure is not known. No data are expected for the remainder of the deployment.

Id: 102 By: lgarzio
Flag: not_operational Exclude: No