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In marine geology, a guyot, also known as a tablemount, is an isolated underwater volcanic mountain (seamount) with a flat top more than 200 m (660 ft) below the surface of the sea. The diameters of these flat summits can exceed 10 km (6.2 mi). Guyots are most commonly found in the Pacific Ocean, but they have been identified in all the oceans except the Arctic Ocean.
A seamount is a large geologic landform that rises from the ocean floor but that does not reach to the water's surface, and thus is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abruptly and are usually found rising from the seafloor to 1,000–4,000 m (3,300–13,100 ft) in height. They are defined by oceanographers as independent features that rise to at least 1,000 m (3,281 ft) above the seafloor, characteristically of conical form. The peaks are often found hundreds to thousands of meters below the surface, and are therefore considered to be within the deep sea. During their evolution over geologic time, the largest seamounts may reach the sea surface where wave action erodes the summit to form a flat surface. After they have subsided and sunk below the sea surface such flat-top seamounts are called "guyots" or "tablemounts".
De profundis refers to Psalm 130, traditionally known as the De profundis from its opening words in Latin.
Bransfield Strait or Fleet Sea is a body of water about 100 kilometres (60 mi) wide extending for 300 miles (500 km) in a general northeast – southwest direction between the South Shetland Islands and the Antarctic Peninsula.
Psalm 130 is the 130th psalm of the Book of Psalms, one of the Penitential psalms. The first verse is a call to God in deep sorrow, from "out of the depths" or "out of the deep", as it is translated in the King James Version of the Bible and the Coverdale translation respectively. It is one of 15 psalms that begin with the words "A song of ascents". The Book of Psalms is in Ketuvim, the third section of the Hebrew Bible, and is a book of the Christian Old Testament. In the Greek Septuagint version of the Bible, and in the Latin Vulgate, this psalm is Psalm 129 in a slightly different numbering system. In Latin, it is known as De profundis.
An ocean bank, sometimes referred to as a fishing bank or simply bank, is a part of the seabed that is shallow compared to its surrounding area, such as a shoal or the top of an underwater hill. Somewhat like continental slopes, ocean bank slopes can upwell as tidal and other flows intercept them, sometimes resulting in nutrient-rich currents. Because of this, some large banks, such as Dogger Bank and the Grand Banks of Newfoundland, are among the richest fishing grounds in the world.
Bowie Seamount is a large submarine volcano in the northeastern Pacific Ocean, located 180 km (110 mi) west of Haida Gwaii, British Columbia, Canada.
Davidson Seamount is a seamount located off the coast of Central California, 80 mi (129 km) southwest of Monterey and 75 mi (121 km) west of San Simeon. At 26 mi (42 km) long and 8 mi (13 km) wide, it is one of the largest known seamounts in the world. From base to crest, the seamount is 7,480 ft (2,280 m) tall, yet its summit is still 4,101 ft (1,250 m) below the sea surface. The seamount is biologically diverse, with 237 species and 27 types of deep-sea coral having been identified.
Koko Guyot is a 48.1-million-year-old guyot, a type of underwater volcano with a flat top, which lies near the southern end of the Emperor seamounts, about 200 km (124 mi) north of the "bend" in the volcanic Hawaiian-Emperor seamount chain. Pillow lava has been sampled on the north west flank of Koko Seamount, and the oldest dated lava is 40 million years old. Seismic studies indicate that it is built on a 9 km (6 mi) thick portion of the Pacific Plate. The oldest rock from the north side of Koko Seamount is dated at 52.6 and the south side of Koko at 50.4 million years ago. To the southeast of the bend is Kimmei Seamount at 47.9 million years ago and southeast of it, Daikakuji at 46.7.
Osprey Reef is a submerged atoll in the Coral Sea, northeast of Queensland, Australia. It is part of the Northwestern Group of the Coral Sea Islands. Osprey Reef is roughly oval in shape, measuring 25 by 12 kilometres, and covers around 195 square kilometres (75 sq mi). It has a perimeter of 69.5 kilometres (43.2 mi). The central lagoon is only 30 metres (98 ft) deep.
Methanolobus profundi is a mesophilic, methylotrophic methanogen archaeon. The type strain is MobMT. It was isolated from a deep subsurface gas field.
De profundis is a choral composition by Arvo Pärt. He wrote the work in 1980, a setting of Psalm 130 in Latin for a four-part men's choir, percussion and organ. It was first performed at the Martinskirche, Kassel on 25 April 1981, conducted by Klaus Martin Ziegler. Pärt dedicated the work of around 7 minutes to Gottfried von Einem. It was published by Universal Edition. Pärt arranged it for chamber orchestra in 2008.
Microbacterium profundi is a Gram-positive, neutrophilic, aerobic and rod-shaped bacterium from the genus of Microbacterium which has been isolated from deep-sea sediments from the Pacific Ocean.
Serinicoccus profundi is a Gram-positive bacterium species from the genus of Serinicoccus which has been isolated from deep-sea sediments from the Indian Ocean.
Thalassotalea profundi is a Gram-negative, rod-shaped and motile bacterium from the genus of Thalassotalea which has been isolated from a scleractinian coral from the Yap seamounts from the Pacific Ocean.
Glycocaulis profundi is a Gram-negative, strictly aerobic and rod-shaped bacterium from the genus of Glycocaulis which has been isolated from seawater from a depth of 4000 meter from the Mariana Trench.
Ponticaulis koreensis is a Gram-negative, aerobic, obligately halophilic, chemoorganotrophic and motile bacterium from the genus of Ponticaulis which has been isolated from seawater from the coast of Jeju in Korea.
Lutibacter profundi is a Gram-negative, rod-shaped and non-motile bacterium from the genus of Lutibacter which has been isolated from the Loki's Castle hydrothermal system from the Arctic Mid-Ocean Ridge.
Myroides profundi is a Gram-negative, aerobic and non-motile bacterium from the genus of Myroides which has been isolated from deep-sea sediments from the southern Okinawa Trough.
Mesoflavibacter profundi is a Gram-negative, aerobic and rod-shaped bacterium from the genus of Mesoflavibacter which has been isolated from a seamount from the northern Mariana Trench.
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