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Publication Citation
| USGS Series | Circular |
|---|---|
| Report Number | 963 |
| Title | APSAS; an Automated Particle Size Analysis System |
| Edition | - |
| Language | ENGLISH |
| Author(s) | Poppe, Lawrence J.; Eliason, A. H.; Fredericks, J. J. |
| Year | 1985 |
| Originating office | |
| USGS Library Call Number | (200) Ci no.963 |
| Physical description | iii, 77 p. :ill. ;26 cm. |
| ISBN |
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Abstract
The Automated Particle Size Analysis System integrates a settling tube and an electroresistance multichannel particle-size analyzer (Coulter Counter) with a Pro-Comp/gg microcomputer and a Hewlett Packard 2100 MX(HP 2100 MX) minicomputer. This system and its associated software digitize the raw sediment grain-size data, combine the coarse- and fine-fraction data into complete grain-size distributions, perform method of moments and inclusive graphics statistics, verbally classify the sediment, generate histogram and cumulative frequency plots, and transfer the results into a data-retrieval system. This system saves time and labor and affords greater reliability, resolution, and reproducibility than conventional methods do.
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