Tidal loading in Nova Scotia: results from improved ocean tide models

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Beaumont, Christopher, Boutilier, Ross
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1978
• Subjects: General Earth and Planetary Sciences; North Atlantic
• Online Access: http://dx.doi.org/10.1139/e78-106; http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-106

A re-examination of tilt and gravity observations from Nova Scotia in light of recent ocean tide studies confirms previous assertions that the M 2 tide in the western North Atlantic Ocean is intermediate between the numerical models of Tiron, Sergeev, and Michurin, and of Zahel.Tilt calculations, using a new M 2 ocean tide model, reinforce the conclusion that the crust beneath Nova Scotia is of a transitional type between oceanic and thickened continental and is more easily deformed than most other crustal types.The tilt observations are in poor agreement with the Jachens–Kuo model, JK25, of the O 1 tide in the western North Atlantic Ocean. It is suggested that the gravity observations, from which JK25 was inferred, were subject to amplitude and phase calibration errors. These errors are estimated from a comparison with the M 2 results.