| 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. |
| Genre: | USGS Numbered Series |
| ProdID: | 3548 |
| Citation Author: | Poppe, Lawrence J.; Eliason, A. H.; Fredericks, J. J. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 77 p. :ill. ;26 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Circular |
| Citation Series Code: | CIR |
| Citation Series Number: | 963 |
| Citation Search Results Text: | APSAS; an Automated Particle Size Analysis System; 1985; CIR; 963; Poppe, Lawrence J.; Eliason, A. H.; Fredericks, J. J. |
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| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | APSAS; an Automated Particle Size Analysis System; 1985; CIR; 963; Poppe, Lawrence J.; Eliason, A. H.; Fredericks, J. J. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/circ/1985/0963/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/circ/1985/0963/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
