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The Jupiter Inlet Light is located in Jupiter, Florida, on the north side of the Jupiter Inlet. The site for the lighthouse was chosen in 1853. It is located between Cape Canaveral Light and Hillsboro Inlet Light. The lighthouse was designed by then Lieutenant George G. Meade of the Bureau of Topographical Engineers. Meade's design was subsequently modified by Lieutenant William Raynolds. The Jupiter Inlet silted shut in 1854, forcing all building supplies to be shipped in light boats down the Indian River. Work was interrupted from 1856 to 1858 by the Third Seminole War. The lighthouse was completed under the supervision of Captain Edward A. Yorke in 1860 at a cost of more than $60,000.〔''A Light In The Wilderness: The Story of Jupiter Inlet Lighthouse and the Southeast Florida Frontier'' by James D. Snyder〕 The lighthouse was built on a hill once thought to be an Indian shell mound or midden (and sometimes falsely rumored to be a burial mound), but which is now determined to be a natural parabolic sand dune.〔Loxahatchee River Historical Society〕 The top of the tower is above sea level. The light can be seen at sea. The lighthouse structure is brick with double masonry walls. The outer wall is conical, tapering from (eight bricks thick) at ground level to (three bricks thick) at base of lantern. The inner wall is cylindrical and two bricks thick throughout. Circumference at base is about and at the top about .〔"Jupiter Inlet Lighthouse Facts" downloaded from the Jupiter Inlet Lighthouse and Museum's official website on September 20, 2013〕 ==History== The point of land which sits at the junction of the Indian River and Jupiter Inlet for thousands of years had been a meeting place for ancient Indian tribes. This strategic site did not go unnoticed by US Army surveyors who in 1849 recommended the Jupiter Inlet area as a suitable place for military defenses. President Franklin Pierce signed the order to set aside a 61½-acre site on the Fort Jupiter Reservation for a lighthouse in 1854.〔"2013 JILM History and Description" downloaded from the Jupiter Inlet Lighthouse and Museum official website on September 20, 2013〕 The lighthouse was initially designed by Lieutenant George Gordon Meade. Later, Lt. William Raynolds, who succeeded Meade as head of the 4th and 7th Lighthouse Districts, improved the strength of the lighthouse with a double wall design. The lighthouse and oil house construction was accomplished by Captain Edward Yorke, who arrived December 31, 1859 and completed the tower in May 1860. It was lit July 10, 1860.〔 A Weather Bureau station and signal station were established on the lighthouse grounds in 1889. Passing ships were signaled during the day by semaphore (flags) and at night by flares. In 1890 the Naval wireless telegraph station was established on the Reservation. It was not until 1925 that it was discovered that a mistake had been made on the original survey; the Lighthouse Reservation actually covered 113.22 acres. In 1930 the acreage was increased to 121.95 and held the tower, a keeper's house, a radio beacon, power house and several outbuildings.〔 The US Navy acquired 8.4 acres of the Reservation from the US Government and by 1936 the Navy was operating a Radio Compass Station at Jupiter as an aid to navigation. The station broadcast weather information and monitored distress signals as well as naval ship-to-shore and aircraft frequencies. On July 1, 1939 all US lighthouses became the responsibility of the US Coast Guard. In the same year, the US Navy established an Intelligence Listening Post at the Naval Radio Station and constructed the barracks building for naval personnel and their families.〔 By July 1940, the Navy's Radio Detection Finding Station, known as "Station J", came online. This secret installation was designed to intercept German U-boat radio messages and warn Allied ships and help US forces attack enemy vessels. Station J was able to pinpoint the names and locations of the submarines. In May 1943, 30 German submarines were destroyed, and in June another 37. Most had been located by the men of Station J.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jupiter Inlet Light」の詳細全文を読む スポンサード リンク
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