Ý Notes

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Outline

1	Water in Motion And Motion in Water
2	Primer Topics
3	Mode 12: Improved Water Profiling Performance More uses and longer deployments with the same ADCP Quality Improved data acceptance for same ADCP Reliability Greater range of work situations with the same ADCP
4	Advantages: Greater Range of Work Situations With the Same ADCP Works in Faster, Shallower flows Consumes less energy Improved along-track resolution Cleaner data quality -- reduced noise
5	Features: Compared with Mode 1 Very small bins (as small as 1 cm for 1200kHz) Lower standard deviations Faster pinging rates(to 20 Hz) Profile can have 255 depth cells
6	Performance: More uses and longer deployments with the same ADCP Measures greater number of small streams due to shallower minimum operating depth Extends life of moored deployments due to reduced energy consumption Achieves finer along-track resolution due to faster ping rate
7	Quality: Improved data acceptance for same ADCP Resolves better the highly-sheared profile of flows near boundaries, due to small cells depth Measures more of river section directly due to less extrapolation
8	Reliability: Greater range of work situations with the same ADCP Measures more demanding situations e.g., shallower, faster flows Higher update rates for same quality data
9	Mode 12: Operational Details A Mode 12 ping is constructed of a sequence of rapid sub-pings that are averaged to create a more precise estimate of the Doppler shift. In Mode 12, heading, pitch, and roll are sampled once per ping; this assumes that ADCP motions are not too dynamic.
10	Mode 12 Advantages Performance, Quality, and Reliability Works in faster, shallower flows Consumes less energy Improved along-track resolution Cleaner data quality -- reduced noise
11	Water in Motion And Motion in Water