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Mount Hood climbing accidents are mountain climbing- or hiking-related incidents on Oregon's Mount Hood. As of 2007, about 10,000 people attempt to climb Mount Hood each year. As of May 2002, more than 130 people have died climbing Mount Hood since records have been kept. One of the worst climbing accidents occurred in 1986, when seven teenagers and two school teachers froze to death while attempting to retreat from a storm.〔 Despite a quadrupling of forest visitors since 1990, the number of people requiring rescue remains steady at around 25 to 50 per year, largely because of the increased use of cell phones and GPS devices. In 2006, 3.4 percent of search and rescue missions were for mountain climbers. In comparison, 20% were for vehicles (including ATVs and snowmobiles), 3% were for mushroom collectors, the remaining 73.6 percent were for skiers, boaters, and participants in other mountain activities. Regardless of route, Mount Hood is a technical climb. It requires ropes, crampons, and ice axes. Approximately 95% of Mount Hood's climbs occur April through July. ==Hazards== Cascade Range weather patterns can be deceptive, with sudden sustained winds of , and visibility quickly dropping from hundreds of miles to an arm's length; climbers can experience temperature drops in less than an hour after leaving an access point. This pattern is responsible for the most well known incidents of May 1986 and December 2006.〔See incident summary references.〕 Avalanches are popularly believed a major climbing hazard, but relatively few Mount Hood deaths are attributed to them. For the 11-year period ending April 2006,〔 The statistical period of the ''Westwide Avalanche Network'' is 31 December 1994 to 30 April 2006, almost eleven and a half years.〕 there was one death on Mount Hood caused by an avalanche,〔(【引用サイトリンク】 url = http://www.i-world.net/oma/avalanche/avalanche-history.html )〕 while 445 avalanche-related deaths occurred throughout North America. Compared to other western states, Oregon has the fewest avalanche fatalities. Worldwide, between 100 and 200 people die each year from avalanches. The two major causes of climbing deaths on Mount Hood are falls and hypothermia.〔See incident history.〕〔(【引用サイトリンク】 GORP Mount Hood climbing description )〕 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「Mount Hood climbing accidents」の詳細全文を読む スポンサード リンク
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