| US 7,523,658 B1 | ||
| Method for measuring river discharge in the presence of moving bottom | ||
| Vadim Polonichko, San Diego, Calif. (US); Ramon Cabrera, Miami, Fla. (US); John Sloat, Las Vegas, Nev. (US); Matthew J. Hull, San Diego, Calif. (US); and Arthur R. Schmidt, Tolono, Ill. (US) | ||
| Assigned to YSI Incorporated, Yellow Springs, Ohio (US) | ||
| Filed on Dec. 14, 2007, as Appl. No. 11/956,472. | ||
| Int. Cl. G01F 13/00 (2006.01) | ||
| U.S. Cl. 73—170.13 [73/170.03; 73/170.07; 73/170.29] | 18 Claims |
| 1. A method for measuring channel flow discharge comprising the steps of:
a) locating a platform carrying a fluid flow measurement device at a plurality of stations at spaced locations across a channel;
b) determining the velocity of the platform at each station by averaging the differences between the position of the platform
at a first time (t) and the position of the platform at a second time equal to the first time plus a position averaging interval
(PI) for a plurality of different first times; and
c) obtaining current flow vs. depth profiles at each station by adjusting current velocity as measured by the current flow
measuring device for the platform velocity.
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