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The Tillamook Burn was a series of forest fires in the Northern Oregon Coast Range of Oregon in the United States that destroyed a total area of of old growth timber in what is now known as the Tillamook State Forest. There were four wildfires in this series, they spanned the years of 1933–1951. By association, the name Tillamook Burn also refers to the location of these fires. This event is an important part of the local history of Oregon. ==First fire (1933)== The first was started in the Gales Creek Canyon on August 14, 1933, when a steel cable dragging a fallen Douglas fir rubbed against the dry bark of a wind-fallen snag. The snag burst into flame, and the wildfire that grew out of this burned before it was extinguished by seasonal rains on September 5.〔Tillamook Burn reforested after three blazes. ''Hillsboro Argus'', October 19, 1976.〕 An oppressive, acrid smoke filled the neighboring valleys; ashes, and cinders, and the charred needles of trees fell in the streets of Tillamook; and debris from the fire reached ships at sea. The loss in processed lumber was estimated to have been $442.4 million in contemporary (1933) dollars—a serious loss not only to the timber industry at the time, but also to a nation struggling with the Great Depression. Salvage operations were immediately begun to harvest usable portions of the burned wilderness. A Civilian Conservation Corps member was the only known human casualty of fighting the fire.〔 The speed with which a forest fire can spread in heavy fuels under the most hazardous conditions is well illustrated by this fire. From August 14 at 1 p.m. until the early morning of August 24 the fire had burned about and it appeared that it might be brought under control soon. Thus, for over 10 days it had burned at an average rate of about a day. On August 24, the humidity dropped rapidly to 26 percent and hot gale force winds from the east sprang up. During the next 20 hours of August 24 and 25 the fire burned over an additional , or at a rate of per hour along a front. The fire was stopped only by the fact that the wind ceased and a thick, wet blanket of fog drifted in from the ocean.〔http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD673703&Location=U2&doc=GetTRDoc.pdf PROBLEMS OF FIRE IN NUCLEAR WARFARE Jerald E. Hill Rand Corporation Santa Monica, California 21 August 1961. pg 25〕 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「Tillamook Burn」の詳細全文を読む スポンサード リンク
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