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Yonaguni Symbol
, one of the Yaeyama Islands, is the westernmost island of Japan, lying from the east coast of Taiwan, between the East China Sea and the Philippine Sea. The island is administered as the town of Yonaguni, Yaeyama Gun, Okinawa, and there are three settlements: Sonai, Kubura, and Higawa. There have been discussions to establish direct ferry services with Taiwan in order to bolster tourism. Name The name ''Yonaguni'' is an exonym related to the native name ''Dunan'' in Yonaguni, with the regular sound change of ''*y-'' to ''d-'' and elision of the intervocalic ''*-g-'' in Yonaguni. The form ''yona-'' likely means "grain, rice", seen in other toponyms such as Yonabaru, hence possibly meaning "grain country". History Early human migration from Taiwan to Yonaguni island has long been the subject of scholarly debate. In 2019, a team of Japanese and Taiwanese researchers succeeded in completing the two-day journey from Cape Wushibi in Taitung County to Yonaguni island along the Kuro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East China Sea
The East China Sea is a marginal sea of the Western Pacific Ocean, located directly offshore from East China. China names the body of water along its eastern coast as "East Sea" (, ) due to direction, the name of "East China Sea" is otherwise designated as a formal name by International Hydrographic Organization (IHO) and used internationally. It covers an area of roughly . The sea's northern extension between Korean Peninsula and mainland China is the Yellow Sea, separated by an imaginary line between the southwestern tip of South Korea's Jeju Island and the eastern tip of Qidong, Jiangsu, Qidong at the Yangtze River estuary. The East China Sea is bounded in the east and southeast by the middle portion of the first island chain off the eastern Eurasian continental mainland, including the Japanese island of Kyushu and the Ryukyu Islands, and in the south by the island of Taiwan. It connects with the Sea of Japan in the northeast through the Korea Strait, the South China Sea i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miyako-jima
is the largest and the most populous island among the Miyako Islands of Okinawa Prefecture, Japan. Miyako Island is administered as part of the City of Miyako Island, which includes not only Miyako Island, but also five other islands. Geography Miyako Island lies approximately southwest of Okinawa Island. With an area of , Miyako is the fourth-largest island in Okinawa Prefecture. The island is triangular in shape and is composed of limestone. Miyako Island is subject to drought and is frequently struck by typhoons. Miyako Island is well known for its beauty, particularly the , a nationally designated Place of Scenic Beauty at the southeasternmost point of Miyako Island. It is considered by many as one of the most beautiful spots in Japan. Other notable locations include Yonaha Maehama beach, Sunayama beach, Painagama Beach and the sights on Irabu-jima. There are three islands nearby which are connected by bridges to Miyako Island, Irabujima (as of early 2015), , and . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ishigaki Island
, also known as ''Ishigakijima'', is a Japanese island south-west of Okinawa Hontō and the second-largest island of the Yaeyama Island group, behind Iriomote Island. It is located approximately south-west of Okinawa Hontō. It is within the City of Ishigaki in Okinawa Prefecture. The city functions as the business and transport center of the archipelago. The island is served by New Ishigaki Airport, the largest airport in the Yaeyamas. Much of the island and surrounding waters including Mount Omoto and Kabira Bay are protected as part of Iriomote-Ishigaki National Park. Ishigaki Island, like the rest of Okinawa, is culturally influenced by both Japan and Taiwan due to its location, about off the north eastern coast of Taiwan. History A tsunami of record height hit Ishigaki Island in 1771. One of the perpetrators of Aum Shinrikyo's sarin gas attack, Yasuo Hayashi, was arrested on Ishigaki Island 21 months after the attacks and from the scene of the crime. On 11 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-surface Missile
A surface-to-surface missile (SSM) is a missile designed to be launched from the ground or the sea and strike targets on land or at sea. They may be fired from hand-held or vehicle mounted devices, from fixed installations, or from a ship. They are often powered by a rocket engine or sometimes fired by an explosive charge, since the launching platform is typically stationary or moving slowly. They usually have fins and/or wings for lift and stability, although hyper-velocity or short-ranged missiles may use body lift or fly a ballistic trajectory. The first operational surface-to-surface missile was the V-1 flying bomb, it was powered by a pulsejet engine. Contemporary surface-to-surface missiles are usually guided. An unguided surface-to-surface missile is usually referred to as a rocket (for example, an RPG-7 or M72 LAW is an anti-tank rocket), whereas a BGM-71 TOW or AT-2 Swatter is an anti-tank guided missile. Examples of surface-to-surface missile include the MGM-140 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Air Self-Defense Force
The , , also referred to as the Japanese Air Force, is the Aerial warfare, air and space warfare, space branch of the Japan Self-Defense Forces, responsible for the defense of Japanese airspace, other air and space operations, cyberwarfare and electronic warfare. The JASDF carries out combat air patrols around Japan, while also maintaining a network of ground and air early-warning radar systems. The branch also has an aerobatic team known as Blue Impulse and has provided air transport in United Nations, UN peacekeeping missions. The JASDF had an estimated 49,913 personnel as of 2018, and as of 2023 operates about 712 aircraft, approximately 321 of them being fighter aircraft. The service will be renamed in 2027 to the , in recognition of the increasing importance of the space domain. History Japan did not have a separate air force before and during World War II. Aviation operations were carried out by the Imperial Japanese Army Air Service and the Imperial Japanese Navy Ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Ground Self-Defense Force
The , , also referred to as the Japanese Army, is the land warfare branch of the Japan Self-Defense Forces. Created on July 1, 1954, it is the largest of the three service branches. New military guidelines, announced in December 2010, direct the Japan Self-Defense Forces away from their Cold War focus on the Soviet Union to a new focus on China, especially in respect of the dispute over the Senkaku Islands. The JGSDF operates under the command of the chief of the ground staff, based in the city of Ichigaya, Shinjuku, Tokyo. The present chief of staff is General Yasunori Morishita. The JGSDF numbered 150,700 soldiers in 2023. History 20th century Soon after the end of the Pacific War in 1945 with Japan accepting the Potsdam Declaration, the Imperial Japanese Army and Imperial Japanese Navy were dismantled by the orders of Supreme Commander for the Allied Powers (SCAP). Both were replaced by the United States Armed Forces occupation force, which assumed responsibility ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al Jazeera English
Al Jazeera English (AJE; , ) is a 24-hour English-language News broadcasting, news channel operating under Al Jazeera Media Network, which is funded by the government of Qatar. Al Jazeera introduced an English-language division in 2006. It is the first global English-language news channel to be headquartered in the Middle East. Al Jazeera is known for its in-depth and frontline reporting particularly in conflict zones such as the Arab Spring, the Gaza–Israel conflict and others. Al Jazeera's coverage of the Arab Spring won the network numerous awards, including the Peabody Award. It positions itself as an alternative media platform to the dominance of Western media outlets like CNN and BBC, focusing on narrative reporting where subjects present their own stories. History The channel was launched on 15 November 2006. The channel was initially slated to be named Al Jazeera International, but the name was changed nine months before the launch. This decision was influenced by o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Defence And Fortification
300px, Cartagena_de_Indias.html" ;"title="Castillo San Felipe de Barajas in Cartagena de Indias">Castillo San Felipe de Barajas in Cartagena de Indias, Colombia Coastal defence (or defense) and coastal fortification are measures taken to provide protection against military attack at or near a coastline (or other shoreline), for example, fortifications and coastal artillery. Because an invading enemy normally requires a port or harbour to sustain operations, such defences are usually concentrated around such facilities, or places where such facilities could be constructed. Coastal artillery fortifications generally followed the development of land fortifications, usually incorporating land defences; sometimes separate land defence forts were built to protect coastal forts. Through the middle 19th century, coastal forts could be bastion forts, star forts, polygonal forts, or sea forts, the first three types often with detached gun batteries called "water batteries". Coastal d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North-northeast
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A ''compass rose'' is primarily composed of four cardinal directions—north, east, south, and west—each separated by 90 degrees, and secondarily divided by four ordinal (intercardinal) directions—northeast, southeast, southwest, and northwest—each located halfway between two cardinal directions. Some disciplines such as meteorology and navigation further divide the compass with additional azimuths. Within European tradition, a fully defined compass has 32 "points" (and any finer subdivisions are described in fractions of points). Compass points or compass directions are valuable in that they allow a user to refer to a specific azimuth in a colloquial fashion, without having to compute or remember degrees. Designations The names of the compass point directions follow these rules: 8-wind compass rose * The four cardinal directio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nautical Mile
A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. Historically, it was defined as the meridian arc length corresponding to one minute ( of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees). Today the international nautical mile is defined as exactly . The derived unit of speed is the knot, one nautical mile per hour. Unit symbol There is no single internationally agreed symbol, with several symbols in use. * NM is used by the International Civil Aviation Organization. * nmi is used by the Institute of Electrical and Electronics Engineers and the United States Government Publishing Office. * M is used as the abbreviation for the nautical mile by the International Hydrographic Organization. * nm is a non-standard abbreviation used in many maritime applications and texts, including U.S. Government Coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senkaku Islands
The Senkaku Islands, known as the Diaoyu Islands in China and the Tiaoyutai Islands in Taiwan, are a group of uninhabited islands in the East China Sea, administered by Japan. They were historically known in the Western world as the Pinnacle Islands. The islands are located northeast of Taiwan, east of China, west of Okinawa Island, and north of the southwestern end of the Ryukyu Islands. The islands are the focus of a territorial dispute between Japan and China and between Japan and Taiwan. China claims the discovery and ownership of the islands from the 14th century, while Japan maintained ownership of the islands from 1895 until its surrender at the end of World War II. The United States administered the islands as part of the United States Civil Administration of the Ryukyu Islands from 1945 until 1972, when the islands returned to Japanese control under the Okinawa Reversion Agreement between the United States and Japan. The discovery of potential undersea oil reserves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
