Filters: Tags: Central California (X) > Types: Citation (X)
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Two-dimensional river flow patterns have been measured using a pair of RiverSondes in two experiments in the Sacramento-San Joaquin River Delta system of central California during April and October 2007. An experiment was conducted at Walnut Grove, California in order to explore the use of dual RiverSondes to measure flow patterns at a location which is important in the study of juvenile fish migration. The data available during the first experiment were limited by low wind, so a second experiment was conducted at Threemile Slough where wind conditions and surface turbulence historically have resulted in abundant data. Both experiments included ADCP near-surface velocity measurements from either manned or unmanned...
Categories: Publication;
Types: Citation;
Tags: 2D river flow patterns,
AD 2007 04 23 to 25,
AD 2007 10 10 to 11,
ADCP near-surface velocity measurements,
Acoustic Doppler Current Profiling,
Two RiverSondes were operated simultaneously in close proximity in order to provide a two-dimensional map of river surface velocity. The initial test was carried out at Threemile Slough in central California. The two radars were installed about 135 m apart on the same bank of the channel. Each radar used a 3-yagi antenna array and determined signal directions using direction finding. The slough is approximately 200 m wide, and each radar processed data out to about 300 m, with a range resolution of 15 m and an angular resolution of 1 degree. Overlapping radial vector data from the two radars were combined to produce total current vectors at a grid spacing of 10 m, with updates every 5 minutes. The river flow in...
Categories: Publication;
Types: Citation;
Tags: 2D surface river flow pattern,
3-yagi antenna array,
Antenna measurements,
Directive antennas,
Fluid flow measurement,
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