「太平洋火環帶」(Pacific ring of fire)「太平洋火環帶」(Pacific ring of fire):專家預測,點名太平洋火環帶,有可能會再發生地震。太平洋火環帶 - ----撼天動地地震科學探索---- 環太平洋火山帶(又稱環太平洋帶、環太平洋地震帶或火環)是一個圍繞太平洋經常發生地震和火山爆發的地區,全長40,000公里,呈馬蹄形。環太平洋火山帶上有一連串海溝、列島和火山,板塊移動劇烈。地球上90%的地震以及81%最強烈的地震都在該地帶上發生,範圍廣泛,從日本、智利、墨吳哥窟西哥、美國、加拿大、俄羅斯、日本、菲律賓、印尼到紐西蘭,而台灣也在火環帶上。第二個最猛烈的地震帶是從爪哇島、蘇門答臘島伸延至喜馬拉雅山脈、地中海以及大西洋的阿爾卑斯帶,地球上6%的地震和17%最強烈的地震在這裡發生。第三個最猛烈的地震帶則是大西洋中洋脊。[1][2]The Pacific Ring of Fire (or sometimes just the Ring of Fire) is an area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 小型辦公室40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes.[1] It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.About 90% of the world's earthquakes and 80% of the world's 酒肉朋友largest earthquakes occur along the Ring of Fire. The next most seismic region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Mid-Atlantic Ridge is the third most prominent earthquake belt.The Ring of Fire is a direct result of plate tectonics and the movement and collisions of 關鍵字排名crustal plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate along with the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion the northwestward moving 租辦公室Pacific plate is being subducted beneath the Aleutian Islands arc. Further west the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of 酒店經紀its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The motion of the fault generates 網路行銷numerous small earthquakes, at multiple times a day, most of which are too small to be felt. The active Queen Charlotte Fault on the west coast of the Queen Charlotte Islands, British Columbia, Canada, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929, a magnitude 8.1 occurred in 1949 (Canada's largest recorded earthquake) and a magnitude 7.4 in 1970. Source:Pacific Ring of Fire - 酒肉朋友Wikipedia, the free encyclopedia 成因:環太平洋火山帶的直接成因是板塊的移動和碰撞,其東部是由於納斯卡板塊和可可斯板塊潛沒於向西移動的南美洲板塊之下;太平洋板塊的一部分以及細小的胡安德富卡板塊則潛沒於北美洲板塊之下。向西北移動的太平洋板塊的東北部分潛沒於阿留申群島弧之下,較西的部分則潛沒於堪察加-千島群島弧之下;太平洋板塊的南面部分情況較複雜,一些面積較小的板塊從馬里亞納群島、菲律賓、布干維爾島、東加和紐西蘭與其碰撞。印尼位於環汽車貸款太平洋火山帶及阿爾卑斯帶之間,東北部的島嶼包括紐幾內亞靠近環太平洋火山帶;南部及西部的蘇門答臘、爪哇、峇里、弗洛里斯島及帝汶島則靠近阿爾卑斯帶。 網站資料 引用 國立自然科學博物館(台灣火山活動與火成岩 )http://web2.nmns.edu.tw/89volcano/index.php(台灣火環帶)http://web2.nmns.edu.tw/89volcano/cl-111b.htm 國民大會:恐怖火山連環爆(1/4) 20110222國民大會:恐怖火山連環爆(2/4) 20110222國民大會:恐怖火山連環爆(3/4) 20110222國民大會:恐怖火農地貸款山連環爆(4/4) 20110222
創作者介紹

寵物店

hh22hhkhye 發表在 痞客邦 PIXNET 留言(0) 人氣()