General maintenance and cleaning on the station.
Dave Ward
This site is for providing Salt River ICON/CREWS field maintenance records for NOAA/AOML/ICON data management purposes. Please update this blog whenever new operations are performed in the field, so that AOML can coordinate their efforts with the Salt River ICON/CREWS field efforts.
Friday, May 11, 2007
Tuesday, April 24, 2007
Maintenance Update
Hi Jim
The instruments were cleaned on Feb. 28, and March 27 before 12 noon. Nothing significant was noticed. I am still waiting for instrument brackets, long and short cable ties, and word on when to remove the groundtruth CT. Please advise
David Ward
Scuba Shack
PO Box 3221
Frederiksted, VI 00841-3221
340-772-DIVE
Toll Free 888-STX-DIVE
www.stcroixscubashack.com
email info@stcroixscubashack.com
The instruments were cleaned on Feb. 28, and March 27 before 12 noon. Nothing significant was noticed. I am still waiting for instrument brackets, long and short cable ties, and word on when to remove the groundtruth CT. Please advise
David Ward
Scuba Shack
PO Box 3221
Frederiksted, VI 00841-3221
340-772-DIVE
Toll Free 888-STX-DIVE
www.stcroixscubashack.com
email info@stcroixscubashack.com
Sunday, January 28, 2007
Cleaning update
I cleaned the instruments on Jan. 28 at 10 am. Not a lot of fouling noticed. I am still waiting for instrument brackets, long and short cable ties, and word on when to remove the groundtruth CT.
Dave
Dave
Tuesday, December 26, 2006
station back online November 30th
The station came back online without intervention on Thursday, November 30th. There continue to be sporadic transmitter error counts reported but as of December 26th they are not appearing consistently so there is less cause for alarm.
The current working theory is still that these error counts relate to a problem obtaining a daily GPS fix. If that's true, then we should be able to go for roughly one month with consistently reported transmitter errors before we can expect the station to go offline again. As of December 26th we only have two consecutive days' worth of transmitter error reports so if the GPS theory is true, the station could go offline again no earlier than late January.
However, if the current patterns hold, the station could well remain online indefinitely.
-- Mike J+
The current working theory is still that these error counts relate to a problem obtaining a daily GPS fix. If that's true, then we should be able to go for roughly one month with consistently reported transmitter errors before we can expect the station to go offline again. As of December 26th we only have two consecutive days' worth of transmitter error reports so if the GPS theory is true, the station could go offline again no earlier than late January.
However, if the current patterns hold, the station could well remain online indefinitely.
-- Mike J+
Wednesday, December 20, 2006
Sunday, November 19, 2006
station offline
The St. Croix station went offline after its last transmission on Sunday, November 19th at 22:22 UTC (6:22 PM local St. Croix time, 5:22 PM AOML time).
We are examining the data for hints about what may have gone wrong. At this stage the most promising hypothesis is a failure in the transmitter's GPS system.
We are examining the data for hints about what may have gone wrong. At this stage the most promising hypothesis is a failure in the transmitter's GPS system.
Tuesday, October 24, 2006
Deep CTD swapped, capillary tubes removed
In a visit to the station on Tuesday, October 24th, Dave Ward removed the SRVI2-Deep CTD (s/n 1644), whose temperature sensor was malfunctioning, which was also affecting this CTD's salinity data.
The new SRVI2-Deep CTD is s/n 1608, and it appears to be working properly.
Dave Ward removed the capillary tubes from the SRVI2-Shallow CTD (s/n 1643) and from the SeaBird SBE-29 pressure sensor. It was hoped that this would fix the problems with the pressure readings from SRVI2-Shallow (which show a large drift in readings over time) but removing the capillary tubes has not fixed the SRVI2-Shallow problem. It appears as though we will have to replace SRVI2-Shallow as well.
The so-called "GroundTruth" CT remains a permanent fixture on this station while we work out the problems with the CTDs.
The new SRVI2-Deep CTD is s/n 1608, and it appears to be working properly.
Dave Ward removed the capillary tubes from the SRVI2-Shallow CTD (s/n 1643) and from the SeaBird SBE-29 pressure sensor. It was hoped that this would fix the problems with the pressure readings from SRVI2-Shallow (which show a large drift in readings over time) but removing the capillary tubes has not fixed the SRVI2-Shallow problem. It appears as though we will have to replace SRVI2-Shallow as well.
The so-called "GroundTruth" CT remains a permanent fixture on this station while we work out the problems with the CTDs.
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