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Topic: Seamount


  
  Seamount - Wikipedia, the free encyclopedia
In recent years, geologists have confirmed that a number of seamounts are active undersea volcanoes: Lo‘ihi in the Hawaiian Islands and Vailu‘ulu‘u in the Manu‘a Group (Samoa) are examples.
Seamounts often project upwards into shallower zones more hospitable to sea life, providing habitats for marine species that are not found on or around the surrounding deeper ocean bottom.
Seamounts may thus be vital stopping points for some migratory animals such as whales.
en.wikipedia.org /wiki/Seamount   (314 words)

  
 [No title]
Genetic Differentiation of Seamount and Basin Populations of the Deep-Sea Amphipod Eurythenes-Gryllus.
This conforms with a hypothesis that invertebrates of oceanic islands and seamounts tend to have short-lived pelagic larval stages, ensuring the greatest retention and conservation of propagules Carriol, R.P. A New Pedunculate Cirripede (Thoracica, Heteralepas) From the Northeast Atlantic Ocean.
It is part of a chain of seven islands and seamounts extending along the West Wind Drift from Gough and Tristan da Cunha in the South Atlantic to Amsterdam and St. Paul in the southern Indian Ocean.
seamounts.sdsc.edu /SMRefAbstract.txt   (17224 words)

  
 Geologists and Biologists Endeavor to Understand Seamount Environments Off California
So, we headed for Pioneer Seamount, at the base of the slope just north of San Francisco; but after the ROV had been on the bottom for 4 hours, the weather caught up with us, with seas approaching 15 ft and projected to be 18 ft, and winds to 30 knots.
Debris chutes and landslide scars characterize the flanks of the seamount.
Rocks on the seamount summit and flanks are coated by iron-manganese-oxide crusts that increase in thickness (to as much as 5 cm thick) with increasing water depth.
soundwaves.usgs.gov /2004/01/fieldwork.html   (1022 words)

  
 SIMoN -- Monterey Bay National Marine Sanctuary
Less than 0.1 percent of the world's seamounts have been explored to learn what species live on them, but many of the species that have been found so far are new to science.
Seamounts have been defined as steep geologic features rising from the seafloor with a minimum elevation of 1,000 meters and with a limited extent across the summit.
Seamounts have a variety of shapes but are most often conical with a circular, elliptical, or more elongated base.
www.mbnms-simon.org /sections/seamounts/overview.php?sec=s   (1004 words)

  
 Loihi Seamount - Wikipedia, the free encyclopedia
Lo'ihi is a seamount and undersea volcano in the Hawaiian archipelago, located at 18.92°N, 155.27°W—roughly 30 km (19 mi) south of the southeast coast of the Island of Hawai'i.
It is one of three very active volcanoes (the other two are Mauna Loa and Kīlauea) thought to presently sit over the Hawaiian hotspot.
The eruption in 1996 was confirmed by scientists at the University of Hawai'i, becoming the first such confirmation of an active eruption occurring on a seamount.
en.wikipedia.org /wiki/Loihi_Seamount   (398 words)

  
 Seamount Studies
The main aim of the project is to investigate the impact of an isolated seamount on the watermass structure and circulation pattern of the surrounding ocean.
Interactions between the mean current, tides and the seamount topography force a quasi - stationary, anticyclonic circulation around the flanks of the seamount leading to substantial consequences for the development of ecosystems.
The Great Meteor Seamount is located far off common fishing grounds and therefore of special interest for the investigation of biological processes depending on one specific oceanographic situation.
www.awi-bremerhaven.de /Modelling/BRIOS/seamount.html   (523 words)

  
 Island - Wikipedia, the free encyclopedia
A hot spot is more or less stationary relative to the moving tectonic plate above it, so a chain of islands results as the plate drifts.
Over long periods of time, this type of island is eventually eroded down and "drowned" by isostatic adjustment, becoming a seamount.
An example is the Hawaiian Islands, from Hawaii to Kure, which then extends beneath the sea surface in a more northerly direction as the Emperor Seamounts.
en.wikipedia.org /wiki/Island   (931 words)

  
 INGOMAR MIDDLE SCHOOL SCIENCE  Seamount        NAME
The term "seamount" was first applied in 1936 to the Davidson Seamount located off the coast of Southern California.
Some seamount surveys have found that certain seamount species are endemic, that is, they live on only one seamount or a few nearby peaks.
Seamounts are extinct submarine volcanoes that occur primarily in the [(Atlantic) (Pacific)(Southern)] Ocean.
home.comcast.net /~snoopy1707/Thisyearsplan/Tectonics/Datastreamseamount.htm   (543 words)

  
 Expeditions with folding kayaks to far away destinations
The minimal seakayaking experience should be a basic and an advanced seamount course, a 14 day overnight trip, experience in kayak surfing and a white water clinic.
Seamount has a special program for members of the expeditions team.
The first and possibly the second expeditions can be done in a folding kayak provided by Seamount, after that it is preferred that you arrange your own kayak.
www.seamount.nl /expeditions.htm   (351 words)

  
 MBARI - Mapping Program - West Coast Seamounts and Ridges Multibeam Survey
Located 120 kilometers to the southwest of Monterey, Davidson Seamount is 42 kilometers long and rises 2,400 meters from the ocean floor, yet is still 1,256 meters below the sea surface.
Davidson Seamount, like Guide, Pioneer, and Gumdrop Seamounts to the north and Rodriguez Seamount to the south (MBARI Mapping Team, 2001), is an elongated structure with a distinctive northeast-to-southwest orientation common to many other volcanic edifices near the continental margins of southern and Baja California (Atwater and Severinghaus, 1989).
The seamount is 12.2 ± 0.4 million years old and formed about 8 million years after the underlying mid-ocean ridge was abandoned (Davis et al.
www.mbari.org /data/mapping/seamounts/davidson.htm   (379 words)

  
 JMPR Monterey Bay Issues: Ecosystem Protection - Davidson Seamount
Davidson Seamount is geologically young but has remarkable biological communities, including large, dense patches of sponges and apparently extremely old coral forests, with individuals commonly reaching more than 3 m in height.
Seamounts provide structure for animals to live on, and the structure creates oceanographic effects that promote the production of food.
A seamount, by rising from the seafloor, has strong currents that frequently run over it, providing the animals living along its flanks with a constant supply of planktonic food.
www.sanctuaries.nos.noaa.gov /jointplan/mb_davidson.html   (292 words)

  
 Mountains in the Sea ~ Exploring the New England Seamount Chain (event00006)
Seamounts are some of the most distinctive features in the sea.
The New England Seamount chain is a line of extinct volcanoes running from the southern side of Georges Bank midway across the western Atlantic.
To determine whether seamount octocorals are genetically isolated between seamounts and from continental slope species.
www.nurc.uconn.edu /About/Events/event0006   (690 words)

  
 Global Volcanism Program | Adams Seamount | Summary
The massive seamount rises about 3500 m to within 59 m of the sea surface about 25 km SW of another large submarine volcano within the Pitcairn hot spot, Bounty Seamount.
Although Bounty Seamount, which rises to within 450 m of the sea surface, appears morphologically more youthful than Adams and water samples indicate continuing hydrothermal activity, two late-Pleistocene Potassium-Argon dates of about 338,000 and 350,000 years were obtained from the flanks of Bounty.
Alkali basaltic rocks were dredged from the flanks of Adams Seamount, whose summit appears to consist of a trachytic lava dome.
www.volcano.si.edu /world/volcano.cfm?vnum=1303-071   (225 words)

  
 Pioneer Seamount Acoustics
Overview of Pioneer Seamount, the hydrophone and cable.
This cable extends about 95 km from shore to an undersea mountain known as Pioneer Seamount (37 21.1'N;123 26.1'W).
On August 31, 2001, a hydrophone array was installed on the summit of the seamount (998m depth), and sounds from earthquakes, weather, whales, ships, etc. are continuously recorded and transmitted to this web site as they are received.
www.pmel.noaa.gov /vents/acoustics/pioneer.html   (175 words)

  
 MBNMS Ecosystem Observations 2004: Site Profile: Davidson Seamount
Davidson Seamount is located 120 kilometers (75 miles) to the southwest of Monterey, 150 kilometers (93 miles) west of Cambria, and is one of the largest known seamounts along the western United States.
Davidson Seamount and the southern portion of the sanctuary.
This large geographic feature was the first to be characterized as a "seamount" in 1938 and was named in honor of George Davidson (1825-1911), a leader in charting West Coast waters.
bonita.mbnms.nos.noaa.gov /reports/2004/eco/site.html   (894 words)

  
 Gulf of Alaska Seamounts   (Site not responding. Last check: 2007-10-11)
These seamounts are thought to have formed as the Pacific Plate moved over a group of hotspots that are now off the coast of Oregon, Washington, and British Columbia.
As a one seamount is carried away from a hotspot another forms in its place, so the older the seamounts are, the farther they have been carried by the plate.
The result of this process is the long seamount chains we see today in the Gulf of Alaska (see Location Map), with the oldest seamounts at the northwest ends of these chains and the youngest at the southeast ends.
ridge.coas.oregonstate.edu /rkeller/seamounts.html   (699 words)

  
 MBARI News - Expedition to explore remarkable deep-sea mountain
The waters around seamounts are incredibly productive—feeding grounds for everything from fishes to sharks, albatrosses, and sperm whales.
Based on a preliminary survey of the seamount conducted in May 2000 by the Monterey Bay Aquarium Research Institute (MBARI), scientists expect both biological and geological surprises.
They will be studying the living creatures found on and around the seamount, taking geological samples and mapping the 40-kilometer (25-mile) long seamount.
www.mbari.org /news/news_releases/2002/may08_davidson.html   (672 words)

  
 Lo`ihi Seamount, Hawai`i
View of Lo`ihi Seamount northwest from a perspective high above and to the southeast of the Island of Hawai`i (green).
Lo`ihi Seamount is an active volcano built on the seafloor south of Kilauea about 30 km from shore.
The seamount rises to 969 m below sea level and generates frequent earthquake swarms, the most intense of which occurred in 1996.
hvo.wr.usgs.gov /volcanoes/loihi/main.html   (445 words)

  
 southcountyjournal.com - WRESTLING - Herpes concern puts Seamount wrestlers on sidelines, too   (Site not responding. Last check: 2007-10-11)
The eight Seamount League schools have postponed today's wrestling dual meets because at least one of its member teams was possibly exposed to a recent case of the Herpes virus transmitted on the mat.
Kennedy High competed at the Lake Washington Invitational last Saturday, and members of the Lake Washington team recently were diagnosed with Herpes Gladiatorum, a strain of the simplex type 1 virus transmitted most commonly in wrestling.
Bourgette, also chairman of the Seamount League, said Kennedy wrestlers are under the same orders, but that hasn't been mandated for the rest of the league.
www.kingcountyjournal.com /sited/retr_story.pl/36856   (439 words)

  
 NOAA Ocean Explorer: Davidson Seamount
The Davidson Seamount is an impressive geologic feature that has intrigued people since it was first mapped as a “sea mountain”; in 1933.
The seamount is an inactive volcano roughly as tall as the Sierra Mountains (2,300 m) and as wide as Monterey Bay (40km), yet its summit is far below the ocean surface (1,300 m).
The Davidson Seamount is 40 km long and rises 2,300 m from the ocean floor, yet it is still 1,300 m below the surface.
oceanexplorer.noaa.gov /explorations/02davidson/background/missionplan/plan.html   (689 words)

  
 The Seattle Times: Sports: Seamount boys and girls roundup: Renton puts on show, jams Hazen   (Site not responding. Last check: 2007-10-11)
RENTON — Ludacris' "Act a Fool" rattled the speakers at the Renton High School gym as the Indians flashed an array of acrobatic layins before last night's Seamount League King Division boys basketball opener.
Highline hit six free throws in the final two minutes to stave off a Tyee comeback — before that, the Pirates were 0 for 7 at the foul line in the second half.
Highline 38, at Tyee 27 — Tara Halverson scored 18 points and Kayla Haines had 10 for the Pirates (2-3 overall, 1-0 league) in the Seamount League King Division opener.
seattletimes.nwsource.com /html/sports/2001814076_seamount13.html   (760 words)

  
 JYI.org :: Seamount Environment Disappearing   (Site not responding. Last check: 2007-10-11)
Seamounts are particularly unique because they block the path of cold, oxygen-rich, deep-water ocean currents.
“Seamounts are disjunct, isolated oases in the deep sea,” explains Tim Shank, an assistant scientist at Woods Hole Oceanographic Institute who researches seamounts.
Shank recalled a submersible dive in Alvin in 2003 to the seamounts he studies, which stretch in geographic range from Cape Cod to the Mid-Atlantic ridge.
www.jyi.org /features/ft.php?id=157   (1311 words)

  
 Deep-Sea Coral and Seamount Conservation
MCBI has played a key role in conserving deep-sea corals, for example, by being the first organization to document comprehensively the impacts of bottom trawling, and by writing, circulating and releasing the Scientists' Statement on Protecting the World's Deep-sea Coral and Sponge Ecosystems, signed by an astounding 1,452 scientists from 69 countries.
As scientists are increasingly learning, these seamounts are home to large but unknown numbers of endemic species (ones confined to a single seamount or seamount chain), and are crucial spawning and feeding grounds for species ranging from orange roughy to wandering albatrosses.
Trawlers plowing through the deep-sea coral forests that cloak many seamounts point to the most urgent need in international marine conservation: the need to extend strong protection to these undersea mountains before they are shaved bald by destructive fishing technologies.
www.mcbi.org /Deep_Sea/Deep_Sea.htm   (809 words)

  
 A Massive Earthquake Swarm at Loihi Seamount
It was only 42 years ago that Lo`ihi and four other seamounts were discovered during a bathymetric survey of the area south and southeast of the Big Island by the U.S.S. Patapsco.
The names were based upon the physical characteristics of the seamounts, and Lo`ihi, as the name implies, is an elongated volcano.
Lo`ihi has a summit caldera and two rift zones which radiate to the north and to the south.
hvo.wr.usgs.gov /volcanowatch/1996/96_08_02.html   (565 words)

  
 Seamount Oasis: Arctic Science Journeys Radio   (Site not responding. Last check: 2007-10-11)
But in fact, a number of deep-sea crab species have made a niche for themselves on the sides of undersea volcanoes known as seamounts.
Some of these seamounts are 15,000 feet high.
Shirley says that over time, the seamounts have become an undersea oasis, a place where fish, crabs, even brightly colored sponges and corals, flourish.
www.uaf.edu /seagrant/NewsMedia/02ASJ/09.13.02seamount-oasis.html   (855 words)

  
 NOAA Ocean Explorer: Davidson Seamount
Davidson seamount, located 120 km Southwest of Monterey, California, is one of the largest known seamounts in U.S. waters.
Davidson Seamount is geologically similar to other seamounts in the region; however, there are important differences between it and other undersea volcanoes.
The explorers are also interested in the animals that live near the surface in the waters over the Davidson Seamount.
oceanexplorer.noaa.gov /explorations/02davidson/davidson.html   (382 words)

  
 [No title]
History of the Seamount Family Three brothers, Bill, Dan, and Alfred Seamount immigrated to the United States from Sweden in the last years of the 19th century.
Bill Seamount, who is featured in the majority of the photographs, married Jean McIntyre of Price, Utah, in 1914, and they settled at the ranch.
Jean McIntyre Seamount (far left on horse); Bill Seamount (to her right, on horse), at neighbor's ranch, May 23, 1920.
www.lib.utah.edu /spc/photo/P1088/p1088.txt   (502 words)

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