Release of WinRiver II Version 2.03

1
Release of WinRiver II Version 2.03

• OSW Webinar
• November 25 and December 2, 2008
• Mike Rehmel

2
Topics Covered

• WinRiver II Version 2.03
• Improved Stability
• Change in Side-lobe Cutoff
• Other Fixes and Changes
• SxS Changes
• All users should upgrade

3
Improved Stability

• Some computers were very unstable with previous
  versions
• Significant effort was placed on improve
  stability in this release
• 2.03 has greatly improved in all cases
• If after upgrading to 2.03 you still have any
  crashes let us know!

4
Change in Side-Lobe Cutoff

• Old side lobe was calculated as 6 of the mean
  beam depth for each ensemble
• If one beam struck something, it was possible for
  that beam to report a velocity past the bottom
  and this velocity be used for the bin velocities
  below the depth of the shallowest beam

5
Change in Side-Lobe Cutoff

• Side lobe is now calculated from 6 of the
  shallowest beam

6
Change in Side-Lobe Cutoff

• New side lobe cutoff off may result in
• Larger bottom Q and smaller measured Q
• Fewer good bins near edges

Old Side Lobe
New Side Lobe
7
Change in Side-Lobe

• Overall affect on total discharge
• Reviewed 70 measurements so for
• Mean depth range .65 to 13 ft
• Q range 7.5 to 18100 cfs
• Average change in discharge lt 1 (Median 0.3)
• 3 out of 70 measurements had gt 5 change in Q and
  had mean difference of beam depths for individual
  ensembles between 17 and 32
• Largest changes in Q likely in measurements with
  few bins per ensemble with uneven bottoms (depths
  varying on average gt 15 per ensemble)
• Reprocessing old measurements currently not
  recommended. If you have measurements with
  significant depth variations (in individual
  ensembles) contact OSW
• Additional guidance will be provided in an
  upcoming memo

8
Other Fixes and Changes

• Enabled diagnostic test for StreamPro
• Lost ensembles labeled correctly now
• Changed locking mechanism (no longer file
  permission)
• Fixed total Q not including ending edge in
  composite tabular during data collection
• Fixed lock-up in wizard with certain drafts
• Fixed counting Pass-Fail in RGTest
• Changed default filename prefix to station number

9
Other Fixes and Changes

• Fixed Q Measurement Summary
• Sdev, incorrect when in English units
• Bad Ens label
• Width label
• WT Pings label
• Remarks not wrapping correctly
• Improved ability to collect data if crash occurs
• Fixed problem with raw data files being recorded
  in multiple directories
• Fixed multiple ASCII-out issues

10
SxS Mode Changes

• Can now set ADCP draft for each section
• Can edit section location in playback
• Added new velocity magnitude graph for evaluating
  extrapolation
• Can mark section not used in playback
• Can use screening thresholds
• Can set extrapolation per section (only ice,
  bidirectional, normal, wind)
• Ability to reload .mmt file and collect data
• Has not been tested by OSW

11
Summary

• Much improved Stability
• New side lobe cutoff may result in changes in
  discharge
• Should be small lt 1 for most measurements
• Shallow cross sections with uneven depths (avg gt
  15 variation in beam depths with an ensemble)
  may have larger changes in Q.
• Other minor issues fixed
• SxS has been modified to include many OSW
  recommendations, but has not been fully tested
• All users should upgrade

12
Questions?

• WinRiver II version 2.03 available at
• http//hydroacoustics.usgs.gov
• http//rdinstruments.com