ADCP Hardware

Hardware & instrument configuration considerations

1. Available Power and Storage ​

   What battery pack equivalent you have, what storage you have ​

2. Motion control​ during deployment
   1. Sufficient buoyancy on frame to hold position well, but not obstructing beam path ​
   2. Consider also nearby moorings and frames to reduce/avoid interference.​
   3. If moving mooring, collect all heading, pitch and roll data. Consider high resolution add on’s such as AHRS. ​
   4. Estimate movement and knock-down and thus proportion of data valid points – weigh up sampling regime, appropriateness of instrument​
   5. require pressure sensor (on ADCP or nearby instrument) for mid-water deployments on moving moorings.​
3. Beam coordinate setup​
   1. Record in Beam coordinates​
   2. Vertical beam in different mode such as alternating high resolution repetition rate?​
4. Range of measurement​
   1. Hardware/configuration but environmental considerations such as stratification​
5. Eddy sizes/overturn size​:
   1. Number of profiles per observation burst and burst duration relative to forcing processes – assumption of statistical constancy over the burst period.​
   2. Estimate max overturn size, to later set maximum radial separation parameter (r_max or max_rads)​
6. Consistent statistics (frozen field) assumption​
7. playing with the number of bins.. you ‘might’ get more range.. but at the expense of storage and power.. and you might not get any more data due to range limitations

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