Suruga Bay
Encyclopedia
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
coast of Honshū
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...
in Shizuoka Prefecture
Shizuoka Prefecture
is a prefecture of Japan located in the Chūbu region on Honshu island. The capital is the city of Shizuoka.- History :Shizuoka prefecture was formed from the former Tōtōmi, Suruga and Izu provinces.The area was the home of the first Tokugawa Shogun...
, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
. It is situated north of an imaginary line joining Omaezaki
Omaezaki, Shizuoka
is a city in Shizuoka Prefecture, Japan. Omaezaki is located at the tip of a peninsula on Japan's Pacific coast. As of 2010, the city had an estimated population of 34,614 and the density of 530 persons per km². The total area was 65.86 km².- Geography :...
Point and Irōzaki Point at the tip of the Izu Peninsula
Izu Peninsula
The is a large mountainous peninsula with deeply indented coasts to the west of Tokyo on the Pacific coast of the island of Honshū, Japan. Formerly the eponymous Izu Province, Izu peninsula is now a part of Shizuoka Prefecture...
and surrounded by Honshū to the southwest and west and the Izu Peninsula to the east.
Geology
Suruga Bay is a place of contrasts. Japan's loftiest peak, Mount FujiMount Fuji
is the highest mountain in Japan at . An active stratovolcano that last erupted in 1707–08, Mount Fuji lies about south-west of Tokyo, and can be seen from there on a clear day. Mount Fuji's exceptionally symmetrical cone is a well-known symbol of Japan and it is frequently depicted in art and...
at 3,776 m (12,388 ft), rises from the 2,500-m depth of the Suruga Trough
Suruga Trough
is a trough that lies off the coast of Suruga Bay in Japan, forming part of the Nankai Trough, the latter being responsible the source of many large earthquakes in Japan's history. Both mark the boundary of the Philippine Sea Plate subducting under the Amurian Plate.-See also:* Japan Median...
running up the middle of the bay, which makes it Japan's deepest. Numerous rivers—especially the major Fuji
Fuji River
The is a river in Yamanashi and Shizuoka Prefectures of central Japan. It is long and has a watershed of . With the Mogami River and the Kuma River, it is regarded as one of the three most rapid flows of Japan....
, the Ōi
Oi River
The is a river in Shizuoka Prefecture, Japan.-Geography:The Ōi River flows from the Akaishi Mountains, the branch of the Japanese Southern Alps which form the border between Shizuoka, Nagano and Yamanashi prefectures. These mountains, with peaks ranging from 2000–3000 meters, are characterized by...
, and Abe
Abe River
The is a river in Shizuoka Prefecture of central Japan. It is long and has a watershed of .The river rises from Akaishi Mountains which stretch over the border between Yamanashi and Shizuoka Prefectures, and flows into Suruga Bay in the Pacific Ocean)...
Rivers—empty into its western portion, giving that area of the bay a seabed rich in submarine canyon
Submarine canyon
A submarine canyon is a steep-sided valley on the sea floor of the continental slope. Many submarine canyons are found as extensions to large rivers; however there are some that have no such association. Canyons cutting the continental slopes have been found at depths greater than 2 km below sea...
s and other geographical features, whereas at the bay's easternmost end, only the Kano River
Kano River
The is a 1st class river in Shizuoka Prefecture of cenral Japan. It is 46 km long and has a watershed of 853 km².The Kano River rises from Mount Amagi in central Izu Peninsula and follows a generally northern path into Suruga Bay at Numazu. The Izu Peninsula is characterized by heavy...
empties into a pocket (called Uchiura-wan) at Numazu
Numazu, Shizuoka
is a city located in eastern Shizuoka Prefecture, Japan. As of 2009, the city has an estimated population of 205,636 and a population density of 1,100 persons per km². The total area was 187.11 km².- Geography:...
where the Izu Peninsula connects to Honshū
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...
, giving the water greater transparency and leaving the seabed largely flat except for a number of small rocky islands, some joined to the mainland by tombolo
Tombolo
A tombolo, from the Italian tombolo, derived from the Latin tumulus, meaning 'mound,' and sometimes translated as ayre , is a deposition landform in which an island is attached to the mainland by a narrow piece of land such as a spit or bar. Once attached, the island is then known as a tied island...
s. This seabed variety coincides with coastline differences as well: The western and central sections of the Suruga Bay coastline, roughly from Shizuoka
Shizuoka, Shizuoka
is the capital city of Shizuoka Prefecture, Japan, and the prefecture's second-largest city in terms of both population and area. It became one of Japan's 19 "designated cities" in 2005.-Geography:...
to Numazu, are characterized by sandy beaches such as those at Yuigahama and Tagonoura, whereas the eastern and northeastern stretches from Numazu down the southwestern coast of the Izu Peninsula to Irōzaki, are generally rocky.
The bay is open to the Philippine Sea
Philippine Sea
The Philippine Sea is a marginal sea east and north of the Philippines occupying an estimated surface area of 2 million mi² on the western part of the North Pacific Ocean...
/Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
to the south, but is mostly protected from oceanic waves by Izu Peninsula. This, coupled with the seabed and water characteristics mentioned above, results in conditions favorable to fishing, sailing, windsurfing, swimming
and research on deep-sea organisms http://pubs.acs.org/cgi-bin/abstract.cgi/esthag/1997/31/i11/abs/es970032v.html. An undersea plateau at the bay's southwest end, known as Senoumi, is especially well known as a rich fishing ground.
Suruga Bay was formed by tectonic subduction
Subduction
In geology, subduction is the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate, sinking into the Earth's mantle, as the plates converge. These 3D regions of mantle downwellings are known as "Subduction Zones"...
of the Philippine Sea Plate and the Eurasian Plate
Eurasian Plate
The Eurasian Plate is a tectonic plate which includes most of the continent of Eurasia , with the notable exceptions of the Indian subcontinent, the Arabian subcontinent, and the area east of the Chersky Range in East Siberia...
at the Suruga Trough
Suruga Trough
is a trough that lies off the coast of Suruga Bay in Japan, forming part of the Nankai Trough, the latter being responsible the source of many large earthquakes in Japan's history. Both mark the boundary of the Philippine Sea Plate subducting under the Amurian Plate.-See also:* Japan Median...
, making it a source of considerable seismic activity
Earthquake
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time...
, http://adsabs.harvard.edu/abs/2005AGUFM.G41A0349Shttp://adsabs.harvard.edu/abs/2004AGUFM.G21A0146S and giving the bay its extreme depth.
Transport
Suruga Bay can be reached by car from TokyoTokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...
via Numazu in two to five hours depending on traffic conditions on the Tomei Expressway
Tomei Expressway
The is a national expressway on the island of Honshū in Japan. It is operated by Central Nippon Expressway Company. It is a part of Asian Highway Network -Naming:The word Tōmei is an acronym consisting of two kanji characters...
or in Numazu.