Record Details
Fine-scale time variations of rainfall
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Fine-scale time variations of rainfall |
| Names |
Trump, Clifford Lyons
(creator) Elliott, William P. (advisor) |
| Date Issued | 1974-07-05 (iso8601) |
| Note | Graduation date: 1975 |
| Abstract | One-minute rainrates were measured during two winter rainy seasons in western Oregon to gain insights into the time-structure of Oregon rainstorms. The averages of three non-dimensional relative variance statistics were greater on the coast than inland. Rainrate distributions showed that a greater portion of the total rain fell, at higher rates on the coast. Coastal rainfall was less persistent than inland rainfall. These results support the idea of a definite coastline effect on rainfall, most probably the result of a horizontal convergence along the coast. Oregon rainfall statistics were compared with similar statistics of Illinois summer convective rainfall. Even though the Illinois rainfall is distinctly more intense and less persistent than Oregon rainfall, the relative variabilities were surprisingly similar. The logarithm of the total rain falling at rates greater than a given rate was found to be a linear function of that rate. Spectral analyses indicated the presence of definite frequencies in the rainrate records (0. 2 and 0. 4 cycles per minute), though lack of stationarity makes this result questionable. |
| Genre | Thesis/Dissertation |
| Topic | Rain and rainfall |
| Identifier | http://hdl.handle.net/1957/23433 |
