Select time zone AST for dates before March 12 and after November 5, 2023. Truro (via Canadian Hydrographic Service website) Select time zone ADT for dates March 12 – November 5, 2023.Fundy Discovery Site: December 2022 – July 2023.This is most likely to happen if the tide is a minimal apogean-neap tide ( the Moon furthest from Earth and at its first- or last-quarter phase). Occasionally, because of much rain and/or rapid snow melt, the river may be too deep for a tidal bore to form. The largest tidal bores in the Salmon River occur on the days of perigean-spring tides ( the Moon closest to Earth and at its new or full phase). Why does the size of the tidal bore in the Salmon River vary? If a tidal bore encounters water that is much deeper than the height of the bore, the bore collapses into a barely noticeable, smooth surge of rising water. Shallow river water – The water in the river prior to the arrival of the bore must be relatively shallow.Higher riverbed – The riverbed must be well above the level of the low tide so that the tide is rising rapidly when it enters the part of the river where a tidal bore might appear.Almost flat riverbed – The riverbed must have a very gentle, downstream slope.Three conditions are necessary to form a tidal bore: However, a tidal bore does not occur in every river flooded by a high tide. Tidal bores occur in regions of the world that have large tides. A tidal bore is a tumbling wavefront which moves upstream in a river, announcing the arrival of an incoming tide.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |