Latest Sediment Trap Data

Dr Roger Grace

Dr Roger Grace

Sue and I measured the sediment traps this afternoon. We now have over a year of data for Whangateau, and almost a year for Sandspit. The data suggest for Sandspit an annual sedimentation rate for the proposed marina of 352mm. For Whangateau the traps suggest an equivalent rate of 192mm per year. If we just look at the southern trap at Sandspit the total for a year would be 432.6mm per year, but we have to average the two sediment traps. Next sampling I want to clean out the traps and start again.
Intention now is to do a comprehensive analysis of one year data including relationship to rainfall data. Hopefully we can prepare a report or scientific paper and have it peer reviewed and published.
See the latest data:

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