Marcus Passage is a stretch of saltwater on the
North Coast region of
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include ...
,
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
, offshore from the mouth of the
Skeena River
The Skeena River is the second-longest river entirely within British Columbia, Canada (after the Fraser River). Since ancient times, the Skeena has been an important transportation artery, particularly for the Tsimshian and the Gitxsan—whose n ...
, south and west of
Smith Island Smith Island or Smith's Island may refer to the following places:
Antarctica
* Smith Islands, Wilkes Land
* Smith Island (South Shetland Islands)
Australia
* Smith Islands National Park, Queensland
*Smith Island (South Australia)
Bermuda
* Smith ...
.
Marcus Passage connects
Chatham Sound with
Telegraph Passage. The south side of Marcus Passage is defined by an extensive
drying bank called Base Sand (locally known as Wilson Bar).
Hydrography
The easterly
tidal flood attains a rate of , and the westerly
tidal ebb can stream at up to .
Two
shoals
In oceanography, geomorphology, and geoscience, a shoal is a natural submerged ridge, bank, or bar that consists of, or is covered by, sand or other unconsolidated material and rises from the bed of a body of water to near the surface. It ...
obstruct Marcus Passage, the first extends from
De Horsey Passage to Base Sand, the second extends from
De Horsey Island to
Kennedy Island
Kennedy Island (local name Kasolo Island, also known as Plum Pudding Island), is a , uninhabited island in Solomon Islands that was named after John F. Kennedy, following an incident involving Kennedy during his World War II naval career. Kennedy ...
.
Sand waves
A sand wave is a lower regime sedimentary structure that forms across from tidal currents.
Formation
Sand waves are formed through the action of the wind or water (through waves or tidal currents).
Sand waves form also underwater.
See also ...
with amplitudes of are known on these shoals.
See also
*
Inside Passage
The Inside Passage (french: Passage Intérieur) is a coastal route for ships and boats along a network of passages which weave through the islands on the Pacific Northwest coast of the North American Fjordland. The route extends from southeaste ...
*
Chatham Sound
*
Skeena river
The Skeena River is the second-longest river entirely within British Columbia, Canada (after the Fraser River). Since ancient times, the Skeena has been an important transportation artery, particularly for the Tsimshian and the Gitxsan—whose n ...
References
{{BritishColumbiaCoast-geo-stub
North Coast of British Columbia
Straits of British Columbia