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Data Interpretation and Reporting 

Data Interpretation and Reporting . Claire Mason . Merging of sieve and laser data. 1. Sieve data directly entered into an Excel spreadsheet = weights in g. 2. Laser data from the Malvern exported into an Excel spreadsheet in same file = percentage volume.

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Data Interpretation and Reporting 

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  1. Data Interpretation and Reporting  Claire Mason

  2. Merging of sieve and laser data • 1. Sieve data directly entered into an Excel spreadsheet = weights in g. • 2. Laser data from the Malvern exported into an Excel spreadsheet in same file = percentage volume. • 3. Any sample falling through sieve pan added to total amount of fine sediment (which has been laser sized). • 4. The laser data is converted into weight using the total amount of fine sediment (step 3). • 5. The sieve weights and laser ‘weights’ are then added together for each fraction • 6. The percentage weight in each fraction is then calculated.

  3. Advantages • complete PS distribution achieved.

  4. Disadvantages • merging two inherently different methods • assumes sediment in sieve pan has same distribution as the fine sediment that has been laser-sized.

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