TY - RPRT TI - Removing tidal-period variations from time-series data using low-pass digital filters AU - Roy A. Walters AU - Cynthia Heston PY - 1982 DO - 10.1175/1520-0485(1982)012<0112:rtpvft>2.0.co;2 UR - https://pubs.usgs.gov/publication/70174408 ID - 70174408 ER -