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Northeastern Japan Arc
The Northeastern Japan Arc, also Northeastern Honshū Arc, is an island arc on the Pacific Ring of Fire. The arc runs north to south along the Tōhoku region of Honshū, Japan. It is the result of the subduction of the Pacific plate underneath the Okhotsk plate at the Japan Trench. The southern end of the arc converges with the Southwestern Japan Arc and the Izu–Bonin–Mariana Arc at the Fossa Magna ( ja) at the east end of the Itoigawa-Shizuoka Tectonic Line (ITIL). This is the geologic border between eastern and western Honshū. Mount Fuji is at the point where these three arcs meet. To the north, the Northeastern Japan arc extends through the Oshima Peninsula of Hokkaidō. The arc converges in a collision zone with the Sakhalin Island Arc and the Kuril Island Arc in the volcanic Ishikari Mountains of central Hokkaidō. This collision formed the Teshio and Yūbari Mountains. The Ōu Mountains form the backbone of the volcanic part of the inner arc that run fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Trench Topographic
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands—Hokkaido, Honshu, Shikoku, and Kyushu—and List of islands of Japan, thousands of smaller islands, covering . Japan has a population of over 123 million as of 2025, making it the List of countries and dependencies by population, eleventh-most populous country. The capital of Japan and List of cities in Japan, its largest city is Tokyo; the Greater Tokyo Area is the List of largest cities, largest metropolitan area in the world, with more than 37 million inhabitants as of 2024. Japan is divided into 47 Prefectures of Japan, administrative prefectures and List of regions of Japan, eight traditional regions. About three-quarters of Geography of Japan, the countr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuril Islands
The Kuril Islands or Kurile Islands are a volcanic archipelago administered as part of Sakhalin Oblast in the Russian Far East. The islands stretch approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia, separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor islets. The Kuril Islands consist of the Greater Kuril Chain and, at the southwest end, the parallel Lesser Kuril Chain. The group termed the 'South Kurils' consists of those of the Lesser Kuril Chain together with Kunashir and Iturup in the Greater Kuril Chain. The Vries Strait between Iturup and Urup forms the Miyabe Line dividing the North and South Kurils. The Kuril Islands cover an area of around , with a population of roughly 20,000. The islands have been under Russian administration since their Invasion of the Kuril Islands, 1945 invasion by the Soviet Union near the end of World War II. Japan claims the four southernmost islands, including two of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dewa Mountains
Dewa Mountains () is a mountain range that runs north and south on the west side of the Tohoku region of Japan. The mountain range spans Aomori, Akita, and Yamagata prefectures. The Dewa Mountains are split into several sub-ranges by the Yoneshiro River, the Omono River and the Mogami River.日本の自然2 東北 (Japanese Nature 2: Tohoku) ISBN 4-00-007932-8 These sub-ranges include the Shirakami Mountains, the Tahei Mountains, The Choki Mountains, and the Chotake Mountains.The highest peak of the mountain range is Mount Chokai (2,236m). Flora and fauna The Dewa Mountains are predominately covered with Beech forest. In particular the Shirakawa mountains (''Shirakawa-Sanchi)'' contain the last area of virgin Siebold’s beech forest - the remnants of a forest which once covered most of northern Japan. In 1993 this forest became one of the first areas in Japan listed as a UNESCO World Heritage Site. Dewa mountains in culture The range is the focal point for the ''Akin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS), as well as the current and most recent of the twelve periods of the Phanerozoic eon. It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today); a proposed third epoch, the Anthropocene, was rejected in 2024 by IUGS, the governing body of the ICS. The Quaternary is typically defined by the Quaternary glaciation, the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four succ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Front
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because most of Earth's plate boundaries are underwater, most volcanoes are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes resulting from divergent tectonic activity are usually non-explosive whereas those resulting from convergent tectonic activity cause violent eruptions."Mid-ocean ridge tectonics, volcanism and geomorphology." Geology 26, no. 455 (2001): 458. https://macdonald.faculty.geol.ucsb.edu/papers/Macdonald%20Mid-Ocean%20Ridge%20Tectonics.pdf Volcanoes can also form where there is stretching an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gunma Prefecture
is a landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of . Gunma Prefecture borders Niigata Prefecture and Fukushima Prefecture to the north, Nagano Prefecture to the southwest, Saitama Prefecture to the south, and Tochigi Prefecture to the east. Maebashi is the capital and Takasaki is the largest city of Gunma Prefecture, with other major cities including Ōta, Gunma, Ōta, Isesaki, Gunma, Isesaki, and Kiryū, Gunma, Kiryū. Gunma Prefecture is one of only eight landlocked prefectures, located on the northwestern corner of the Kantō Plain with 14% of its total land being designated as List of national parks of Japan, natural parks. History The ancient province of Gunma was a center of horse breeding and trading activities for the newly immigrated continental peoples (or Toraijin). The arrival of horses and the remains of horse tackle coinci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tochigi Prefecture
is a landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Tochigi Prefecture has a population of 1,897,649 (1 June 2023) and has a geographic area of 6,408 Square kilometre, km2 (2,474 Square mile, sq mi). Tochigi Prefecture borders Fukushima Prefecture to the north, Gunma Prefecture to the west, Saitama Prefecture to the south, and Ibaraki Prefecture to the southeast. Utsunomiya is the capital and largest city of Tochigi Prefecture, with other major cities including Oyama, Tochigi, Oyama, Tochigi, Tochigi, Tochigi, and Ashikaga, Tochigi, Ashikaga. Tochigi Prefecture is one of only eight landlocked prefectures and its mountainous northern region is a popular tourist region in Japan. The Nasu District, Tochigi, Nasu area is known for its onsens, local sake, and Skiing, ski resorts, the villa of the Imperial House of Japan, Imperial Family, and the station of the Shinkansen railway line. The city of Nikkō, Tochigi, Nikkō, with its ancien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Nikkō-Shirane
is a stratovolcano in the Nikkō National Park in central Honshū, the main island of Japan. It stands at 2,578 m high. It is the highest mountain in north eastern Japan (no higher mountains exist in the east or north of this mountain). Its peak (Mt Okushirane) is a Lava dome of andesite. Mt Nikkō-Shirane is listed in the 100 famous mountains in Japan proposed by Kyuya Fukada and also of one of the famous mountains of Tochigi and Gunma prefectures respectively. It should not be confused with Mount Kusatsu-Shirane elsewhere in Gunma Prefecture. It is located at the boundary between Nikko City, Tochigi Prefecture and Katashina Village, Tone County Gunma Prefecture. Mt. Nikko Shirane is surrounded by the mountains of the Shirane volcano ( Neogene volcano) and is often hidden by clouds throughout the year. From the Kanto Plain only the dome-shaped ( Quaternary volcano) summit is visible. In winter if the weather conditions permit, the white snow fields on the darker surround ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aomori Prefecture
is a Prefectures of Japan, prefecture of Japan in the Tōhoku region. The prefecture's capital, largest city, and namesake is the city of Aomori (city), Aomori. Aomori is the northernmost prefecture on Japan's main island, Honshu, and is bordered by the Pacific Ocean to the east, Iwate Prefecture to the southeast, Akita Prefecture to the southwest, the Sea of Japan to the west, and Hokkaido across the Tsugaru Strait to the north. Aomori Prefecture is the List of Japanese prefectures by area, 8th-largest prefecture, with an area of , and the List of Japanese prefectures by population, 31st-most populous prefecture, with more than 1.18 million people. Approximately 45 percent of Aomori Prefecture's residents live in its two Core cities of Japan, core cities, Aomori and Hachinohe, which lie on coastal plains. The majority of the prefecture is covered in forested mountain ranges, with population centers occupying valleys and plains. Aomori is the third-most populous prefecture i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natsudomari Peninsula
The is a peninsula on the northern end of the Japanese island, Honshū, that stretches north into Mutsu Bay. Administratively the area is a part of Aomori Prefecture, and the bulk of the area falls within the jurisdiction of the town of Hiranai, with Aomori, Aomori, Aomori city on the western periphery of the landform. The peninsula has several small fishing communities scattered around the coastline, but most of the area's people live in the river valley that demarcates the southern boundary of the peninsula. The peninsula is notably an attractive nesting place for Siberian tundra swan. Geography The Natsudomari Peninsula is bordered by Mutsu Bay to the east and north and Aomori Bay to the west. The peninsula is connected to the mainland of Honshū to the south. The Ōu Mountains, Ōu Mountain Range begins on the peninsula and continues to the Nasu Mountains at the northern boundary of the Kantō region. The peninsula lies near the geographic center of Aomori Prefecture, the nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inner Arc
Interior may refer to: Arts and media * ''Interior'' (Degas) (also known as ''The Rape''), painting by Edgar Degas * ''Interior'' (play), 1895 play by Belgian playwright Maurice Maeterlinck * ''The Interior'' (novel), by Lisa See * Interior design, the trade of designing an architectural interior * ''The Interior'' (Presbyterian periodical), an American Presbyterian periodical * Interior architecture, process of designing building interiors or renovating existing home interiors Places * Interior, South Dakota * Interior, Washington * Interior Township, Michigan * British Columbia Interior, commonly known as "The Interior" Government agencies * Interior ministry, sometimes called the ministry of home affairs * United States Department of the Interior Other uses * Interior (topology), mathematical concept that includes, for example, the inside of a shape * Interior FC, a football team in Gambia See also * * * List of geographic interiors * Interiors (other) * I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ōu Mountains
The are a mountain range in the Tōhoku region of Honshū, Japan. It is the longest range in Japan and stretches south from the Natsudomari Peninsula of Aomori Prefecture to the Nasu volcanoes at the northern boundary of the Kantō region. Though long, the range is only about wide. The highest point in the range is Mount Iwate, . The range includes several widely known mountains: Hakkōda Mountains, Mount Iwate, Mount Zaō, Mount Azuma, Mount Yakeishi, and Mount Adatara. Naming These mountains previously formed the boundary between historical provinces of Mutsu (陸奥国) and Dewa (出羽国). The ''kanji'' for the name of the mountain range was created from one ''kanji'' of the two provinces, 奥 and 羽, respectively. Geology The Ōu Mountains began to form in the Pliocene. They sit over the middle of the inner arc of the Northeastern Japan Arc. This is the result of the Pacific plate subducting under the Okhotsk plate. A chain of Quaternary The Quat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
