Subtidal Sea Level Data

DESCRIPTION:

The time series is a low-passed version of hourly water level observations (subsampled from 6-min data) made by the NOAA tide gauge at Crescent City, California (41 deg 44.7 min North, 124 deg 11.0 min West) from 1/6/1980 - 12/26/1991. The water level observations were made inside the stilling well of the tide gauge to eliminate high-frequency wind waves and swell. After the data were demeaned, a Kaiser low-pass filter was used to remove the tides from the hourly observations. The series was then subsampled every 0.5 days. While the original water levels were recorded in feet, they were converted to centimeters during processing. Since these observations were collected and processed by US Federal employees supported by Federal funds, the series may be used freely without regard to copyright restrictions. Questions concerning the series should be send to Hal Mofjeld (mofjeld@pmel.noaa.gov).