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The initial iteration used continuous profiling through out the deployment. This is the
highest possible sampling rate and provides a quick indication of the degree to which the profile
start interval must be lengthened. A 4 month minimum deployment duration is needed if both
turn-around cruises are used.
The deployment parameters are constrained by the file system. Each profile requires less
than 20 minutes to complete and continuous profiling will reach the 1362 profile limit after only
16 days (~2 weeks). Increasing the profile start interval to 2 hours, a factor of approximately 7,
may be sufficient.
Evaluate the
schedule
Still limited by
file system but
duration is now
almost
sufficient
Start 1| Countdown delay = 12:00:00 [HH:MM:SS]
Schedule 2| Profile start interval = 000 02:00:00 [DDD HH:MM:SS]
3| Reference date/time = 04/10/2002 00:00:00
4| Burst interval = 000 00:00:00 [DDD HH:MM:SS]
5| Profiles per burst = Disabled
6| Paired profiles Disabled
Stops 7| Shallow pressure = 25.0 [dbar]
8| Deep pressure = 200.0 [dbar]
9| Shallow error = 50.0 [dbar]
A| Deep error = 25.0 [dbar]
B| Profile time limit = 00:14:35 [HH:MM:SS]
C| Stop check interval = 10 [sec]
D| Done
Selection ? d
Checking entries . . . done.
All entries are within allowed ranges.
Checking profile schedule . . . done.
Calculated minimum profile duration: 00:17:14
Profile schedule selections are consistent.
Checking burst schedule . . . done.
Burst mode disabled.
Estimated Profile 1 start time: 04/10/2002 00:00:00
Profiling distance will reach 1 million meters
on 07/30/2003 after 5714 profiles.
Deployment is limited to 1362 profiles
and will end on 08/01/2002.
Accept and store schedule selections (Yes/No) [Y] ?
Figure C-24: Shallow Deployment – Second Settings
Increasing the start interval to 2 hours is, by itself, almost sufficient. A further increase
to 2.5 or 3 hours would yield a duration in excess of 4 months. While this would also reduce the
sampling rate, it is a viable solution and should be considered. Two further alternatives are
shown next. The first uses a continuous burst of 50 profiles once each week. This approach
Appendix C-26