Single Point Velocity Meter

Reference Designator
CE01ISSM-SBD17-04-VELPTA000
Review Status
Review Complete
Note
Depth
1m
Class
VELPT (Single Point Velocity Meter)
Make / Model
Nortek / Aquadopp 300m

Dataset Reviews Last processed: 8/5/19, 1:49 PM

QC Check Info
Dep. Preferred Method Stream DD FD SG EG Gaps GD TS Rate (s) Pressure Comp. Time Order Valid Data Missing Data Data Comp. Missing Coords. Review
1 recovered_inst 122 122 0 0 0 0 17,427 600 2 / 1 1 1 Complete
2 recovered_inst 185 185 0 0 0 0 8,797 1,800 2 / 2 Complete
3 recovered_inst 127 126 0 0 0 0 6,013 1,800 2 / 2 Complete
4 recovered_inst 216 216 0 0 0 0 20,645 900 2 / 2 Complete
5 recovered_inst 138 138 0 0 0 0 13,170 900 2 / 2 Complete
6 recovered_inst 200 200 0 0 0 0 19,116 900 2 / 2 Complete
7 recovered_inst 177 177 0 0 0 0 16,966 900 2 / 2 Complete
8 recovered_inst 172 172 0 0 0 0 16,386 900 2 / 2 Complete
9 recovered_inst 181 181 0 0 0 0 17,326 900 2 / 2 Complete
Data Ranges Review Images

Test Notes

  1. no other streams for comparison

Data Coverage

Deployment: 123456789
100%100%99%100%100%100%100%100%100%

Lat/Lon Differences (km)

Deployment: 123456789
1 0.00
2 0.000.00
3 0.080.080.00
4 0.200.200.220.00
5 0.080.080.000.220.00
6 0.180.180.170.090.170.00
7 0.240.240.220.430.220.390.00
8 0.170.170.160.090.160.010.380.00
9 0.170.170.180.370.180.340.100.330.00

Example Composite Data Plot

System Annotations

Metadata Start Date End Date Comment
CE01ISSM
4/17/14, 4:45 PM 9/30/16, 8:00 PM

All of the inshore surface moorings suffer from an issue called the 'top of the day problem.' A race condition exists in the CPM firmware when transferring daily log files harvested from the various sub-components in a buoy system (e.g. DCL16, CPM3, DCL35, etc) over the Iridium RUDICS connection. The primary CPM rsync's data files from the various sub-components to a central data directory. The first time a daily file is created/copied into that directory (usually shortly after midnight), a compressed copy of the file is created and that compressed file is queued up in a separate text file for transmission to shore. The transfer routine reads that text file and processes the files from that list in order from top to bottom. Once that compressed file is transferred to shore, no further updates for that file are sent to shore. Meanwhile, the CPM continues to rsync data from the different sub-components, updating the original daily log file. The net result is that data is accumulating in the daily log file for an instrument, but we may see only one record (or none) depending on when the rsync job occurred and the compressed file was created and staged for transfer to shore. This affects telemetered data only.

Id: 868 By: michaesm

CE01ISSM-SBD17-04-VELPTA000
4/17/14, 6:00 PM

According to the manufacturer, data are suspect when the instrument is tilted more than 20 degrees (measured by pitch and roll).

Id: 796 By: lgarzio

CE01ISSM
8/7/16, 8:00 PM 10/3/16, 8:00 PM

Correcting the iridium data telemetry issues, permitting full telemetry of data files, resulting in greater power consumption than anticipated. Result is power level of the battery pack has dropped below operational limits and subsystems can no longer power instruments. Shutting the mooring down, and placing in a low power maintenance mode.

Id: 869 By: michaesm
Flag: not_operational Exclude: No

CE01ISSM
12/11/16, 7:00 PM 5/30/17, 8:00 PM

On Monday, Mon Dec 12 15:30:00 2016, stopped receiving any data from CTDBP3. No indication as to possible cause.

Id: 870 By: michaesm
Flag: not_operational Exclude: No

CE01ISSM
2/5/17, 7:00 PM 4/30/17, 8:00 PM

The buoy and mfn battery voltages have been drawn down faster than expected. Have shutdown further power to DCL16, DCL17, CPM3, and DCL37 (DCL35 failed several weeks ago). This takes the following instruments offline:
DCL16
CTDBP + DOSTA (probably internally recording)
FLORTNUTNR (probably internally recording)
PHSEN (probably internally recording)
PCO2W (probably internally recording)
OPTAA
SPKIR
VELPT (probably internally recording)

DCL17
MOPAK
CTDBP + FLORT
VELPT (probably internally recording)
ACOMM
DCL35
ADCPT (probably internally recording)
PCO2W (probably internally recording)
PHSEN (probably internally recording)
PRESF (probably internally recording)
VEL3D (probably internally recording)
DCL37
CTDBP + DOSTA (probably internally recording)
OPTAA
ZPLSC (probably internally recording)

Id: 871 By: michaesm
Flag: not_available Exclude: No

CE01ISSM-SBD17-04-VELPTA000
Method: telemetered
Stream: velpt_ab_dcl_diagnostics
9/30/18, 4:30 PM

A configuration error disabled acquisition of the twice daily diagnostics data. No telemetered or recovered data will be available in this stream for deployment 10.

Id: 1540 By: wingardc
Flag: not_evaluated Exclude: No

CE01ISSM-SBD17
Method: telemetered
1/11/20, 1:45 PM

During a large storm event on 2020-01-11, the surface buoy and NSIF broke free and went adrift. The buoy and NSIF were recovered from the beach the following mooring. No further data will be collected from these systems for the remainder of this deployment.

Id: 1892 By: wingardc
Flag: not_operational Exclude: No

Review Notes

Metadata Start Date End Date Comment
CE01ISSM-SBD17-04-VELPTA000
Deployment: 2
3/15/15, 12:00 AM 4/12/15, 12:30 AM

Suspect upward_velocity values at the end of deployment 2.

By Lori Garzio, on 8/13/19

CE01ISSM-SBD17-04-VELPTA000
Deployment: 4
10/8/15, 12:02 PM 5/10/16, 3:22 PM

Suspect upward_velocity values for deployment 4 (top panel in attached plot) - values are of a similar magnitude to northward and eastward throughout the entire deployment.

By Lori Garzio, on 8/13/19

CE01ISSM-SBD17-04-VELPTA000
Deployment: 5
5/18/16, 3:44 PM 10/2/16, 8:15 PM

Suspect upward_velocity values for deployment 5 (middle panel in attached plot) - values are of a similar magnitude to northward and eastward throughout the entire deployment.

By Lori Garzio, on 8/13/19

CE01ISSM-SBD17-04-VELPTA000
Deployment: 9

Pressure increased slightly in July 2018 (a similar pressure change was seen on CE01ISSM-RID16-04-VELPTA000 at the same time).

By Lori Garzio, on 8/13/19

New Note