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Northwestern Hawaiian Islands
The Northwestern Hawaiian Islands also known as the Leeward Hawaiian Islands, are a series of islands and atolls located northwest of Kauai and Niihau, Niihau in the Hawaiian Islands, Hawaiian island chain. Politically, these islands are part of Honolulu County, Hawaii, Honolulu County in the U.S. state of Hawaii, with the exception of Midway Atoll. Midway Atoll is a Territories of the United States, territory distinct from the State of Hawaii, and is classified as one of the United States Minor Outlying Islands. The United States Census Bureau designates this area, excluding Midway Atoll, as Census Tract 114.98 of Honolulu County. The total land area of these islands is 3.1075 square miles (8.048 km²). With the exception of Nihoa, all these islands lie north of the Tropic of Cancer, making them the only islands in Hawaii situated outside the tropics. The Northwestern Hawaiian Islands are part of the Papahānaumokuākea Marine National Monument, a globally significant marine cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Islands
The Hawaiian Islands () are an archipelago of eight major volcanic islands, several atolls, and numerous smaller islets in the Pacific Ocean, North Pacific Ocean, extending some from the Hawaii (island), island of Hawaii in the south to northernmost Kure Atoll. Formerly called the Sandwich Islands by Europeans, the present name for the archipelago is derived from the name of its largest island, Hawaii. The archipelago sits on the Pacific Plate. The islands are exposed peaks of a great undersea mountain range known as the Hawaiian–Emperor seamount chain, formed by volcano, volcanic activity over the Hawaiian hotspot. The islands are about from the nearest continent and are part of the Polynesia subregion of Oceania. The U.S. state of Hawaii occupies the archipelago almost in its entirety (including the mostly uninhabited Northwestern Hawaiian Islands), with the sole exception of Midway Atoll (a United States Minor Outlying Island). Hawaii is the only U.S. state that is sit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necker Island (Northwestern Hawaiian Islands)
Necker Island ( "branched island") is a small uninhabited island in the Northwestern Hawaiian Islands. It is located at in the Pacific Ocean, northwest of Honolulu, Hawaii, northwest of Nihoa, and north of the Tropic of Cancer. It is part of the state of Hawaii in the United States. It contains important prehistoric archaeological sites of the Hawaiian culture and is part of the Hawaiian Islands National Wildlife Refuge within the Papahānaumokuākea Marine National Monument. The United States Census Bureau reports Necker Island's land area as . [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LORAN
LORAN (Long Range Navigation) was a hyperbolic navigation, hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK's Gee (navigation), Gee system but operated at lower frequencies in order to provide an improved range up to with an accuracy of tens of miles. It was first used for ship convoys crossing the Atlantic Ocean, and then by long-range patrol aircraft, but found its main use on the ships and aircraft operating in the Pacific theater during World War II. LORAN, in its original form, was an expensive system to implement, requiring a cathode ray tube (CRT) display and a well trained operator. This limited use to the military and large commercial users. Automated receivers became available in the 1950s, but the same improved electronics also opened the possibility of new systems with higher accuracy. The U.S. Navy began development of Loran-B, which offered accuracy on the order of a few tens of feet, but ran into signi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Government
The Federal Government of the United States of America (U.S. federal government or U.S. government) is the Federation#Federal governments, national government of the United States. The U.S. federal government is composed of three distinct branches: United States Congress, legislative, President of the United States, executive, and Federal judiciary of the United States, judicial. Powers of these three branches are defined and vested by the Constitution of the United States, U.S. Constitution, which has been in continuous effect since May 4, 1789. The powers and duties of these branches are further defined by Act of Congress, Acts of Congress, including the creation of United States federal executive departments, executive departments and courts subordinate to the Supreme Court of the United States, U.S. Supreme Court. In the Federalism in the United States, federal division of power, the federal government shares sovereignty with each of the 50 states in their respective t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Midway
The Battle of Midway was a major naval battle in the Pacific Ocean theater of World War II, Pacific Theater of World War II that took place on 4–7 June 1942, six months after Japan's attack on Pearl Harbor and one month after the Battle of the Coral Sea. The Japanese Combined Fleet under the command of Isoroku Yamamoto suffered a decisive defeat by the United States Pacific Fleet, U.S. Pacific Fleet near Midway Atoll, about northwest of Oahu. Yamamoto had intended to capture Midway and lure out and destroy the U.S. Pacific Fleet, especially the aircraft carriers which had escaped damage at Pearl Harbor. Before the battle, Japan desired to extend its Pacific defense perimeter, especially after the Doolittle Raid, Doolittle air raid of Tokyo in April 1942, and to clear the seas for attacks on Midway, Fiji, Samoa, and Hawaii. A related Japanese Aleutian Islands campaign, attack on the Aleutian Islands began one day earlier, on 3 June. The Japanese strike force at Midway, known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tern Island (Hawaii)
Tern Island is a coral island located near French Frigate Shoals in the Northwestern Hawaiian Islands. It is in the Hawaiian Islands National Wildlife Refuge. It is approximately west-northwest of Oahu, about halfway to Midway Island to the west. The island provides a breeding habitat to 18 species of seabirds, green sea turtles, and Hawaiian monk seals. The Naval Air Station's WWII seawall, an inactive Navy runway, and some small buildings remain. Some later repair work was done to the thousands of feet of seawall built during WWII. The Fish and Wildlife Service closed its field station on the island at the end of 2012 after a storm damaged the facilities. A naval base operated from 1942 to 1946, a Coast Guard base from 1952 to 1979, and a Fish and Wildlife Service station from 1979 to 2012, but the island still is visited periodically. It was recorded on Google Earth in 2013. The French Frigate Shoals Airport is unattended and only acceptable for emergency landings. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laysan Island Interior
Laysan (; ) is one of the Northwestern Hawaiian Islands, located northwest of Honolulu. It has one land mass of , about in size. It is an atoll of sorts, although the land completely surrounds Laysan Lake, some above sea level, that has a salinity approximately three times greater than the ocean. Laysan's Hawaiian name, ''Kauō'', means "egg". It was mined for guano in the late 19th century and early 1900s, which resulted in the release of rabbits who had been brought in for food. After mining ceased, the rabbits ate up the natural vegetation causing a couple dozen plant and one bird species to go extinct. The rabbits were removed by 1923, and from then on until modern times it has been a nature reserve. The island is the home of the rarest duck in the world, the Laysan Duck. Geology Laysan is the second largest single landmass in the Northwestern Hawaiian Islands, after Sand Island at Midway Atoll. Laysan was created by coral growth and geologic upshift. The fringing reefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kure Atoll
Kure Atoll (; ; ) or Ocean Island is an atoll in the Pacific Ocean west-northwest of Midway Atoll in the Northwestern Hawaiian Islands at . A coral ring across encloses a lagoon several meters deep. The atoll's largest island is called ''Green Island'', and is a habitat for hundreds of thousands of seabirds in the present day and wildlife staff. A short, unused, and unmaintained runway and a portion of one building, both from a former United States Coast Guard LORAN station, are located on the island. Politically, it is part of Hawaii, though the nearest island is Midway, which is a separate unorganized territory. Kure Atoll, in addition to being the nesting grounds for tens of thousands of seabirds, has recorded several vagrant terrestrial birds, including snow bunting, eyebrowed thrush, brambling, olive-backed pipit, black kite, Steller's sea eagle and Chinese sparrowhawk. It is currently managed as a Wildlife Bird Sanctuary by the State of Hawaii's Department of Land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pearl And Hermes Atoll
The Pearl and Hermes Atoll (), also known as Pearl and Hermes Reef, is part of the Northwestern Hawaiian Islands, a group of small islands and atolls that form the farthest northwest portion of the Hawaiian island chain. The atoll consists of a variable number of flat and sandy islets, typically between five and seven. More were noted in historical sources but have since been lost to erosion and rising sea levels. The atoll is named after ''Pearl'' and , a pair of English whaleships that wrecked there in 1822. It has been the site of at least eight known shipwrecks, including the Japanese ''Wiji Maru'', SS ''Quartette'', and most recently the M/V ''Casitas'', which ran aground on the reef in 2005. The atoll is an important habitat for seabirds, marine life, and invertebrate species. Twenty-two bird species nest and breed on the islands, including twenty percent of the world's population of black-footed albatrosses. The atoll has historically been included with the rest of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisianski Island
Lisianski Island (Hawaiian language, Hawaiian: ''Papa‘āpoho'') is one of the Northwestern Hawaiian Islands, with a land area of and a maximum elevation of above sea level. It is a low, flat sand and coral island about northwest of Honolulu, Hawaii. The island is surrounded by reefs and shoals, including the extensive Neva Shoals. Access to the island is possible only by helicopter or by boat via a narrow sandy inlet on the southeastern side of the island. Administration Politically, Lisianski Island is part of the City and County of HonoluluBryan, p. 10. in the State of Hawaii. However, as part of the Hawaiian Islands National Wildlife Refuge, it is administered by the United States Fish and Wildlife Service. It has no resident human population. Geology and topography Lisianski Island is made of limestone that caps the submerged summit of an extinct shield volcano that was active about 20 million years ago. Lisianski Island is undergoing the slow process of erosion, and fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laysan
Laysan (; ) is one of the Northwestern Hawaiian Islands, located northwest of Honolulu. It has one land mass of , about in size. It is an atoll of sorts, although the land completely surrounds Laysan Lake, some above sea level, that has a salinity approximately three times greater than the ocean. Laysan's Hawaiian name, ''Kauō'', means "egg". It was mined for guano in the late 19th century and early 1900s, which resulted in the release of rabbits who had been brought in for food. After mining ceased, the rabbits ate up the natural vegetation causing a couple dozen plant and one bird species to go extinct. The rabbits were removed by 1923, and from then on until modern times it has been a nature reserve. The island is the home of the rarest duck in the world, the Laysan Duck. Geology Laysan is the second largest single landmass in the Northwestern Hawaiian Islands, after Sand Island at Midway Atoll. Laysan was created by coral growth and geologic upshift. The fringing reef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
