The relationship of sea tides to atmospheric pressure at Astoria, Oregon, and Eureka, California Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_projects/f4752h423

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  • Predicted sea tide data for Astoria, Oregon are submitted to a formula which when graphed display the day-to-day intensity of change in sea tides. Also predicted sea tide data for Humboldt Bay are submitted to a formula and graphed, which illustrates the variation in length of the tidal day. Astronomical data, which indicate the phases and positions of the sun and moon, are also graphed. Wind data from Newport, Oregon are submitted to low-low passed filtering technique and graphed. These data are all compared to daily 0400 sea level pressure readings, from Astoria, Oregon and Eureka, California, graphed on the same scale. Certain relationships and common elements are found throughout the June 1 through August 31 test period covering the years 1966- 1972. Correlations are found between the occurrence of higher pressure at Astoria than Eureka, to equatorial position of the moon, decreasing intensity of both high and low tide changes, maximum duration of the tidal day, and wind direction and intensity along the Oregon coast. Other factors are discussed.
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