BASE jumper
BASE jumper 是指从事定点跳伞的专业或者业余的跳伞运动员。
国内定点跳伞专业网站的站长是：魔法虫虫 http://www.basejumper.cn
国内优秀的定点跳伞运动员有 石春燕 丁建平等
什么是B.A.S.E 定点跳伞？
定点跳伞运功是指从固定高处用降落伞跳下的极限运动， “定点”BASE是四种跳伞环境的首字母缩写：
摩天大楼（Building)
天线高塔 (Antenna)
大桥水坝 (Span)
悬崖溶洞 (Earth)
“定点”跳伞的发明者是电影制造商Carl Boenish ，他的妻子 Jean Boenish，Phil Smith, 和 Phil Mayfield。Carl是现代基地跳伞运动的真正的推动者，并在1978年拍摄了第一部关于基地跳伞的影片（在erukyapitan ，优胜美地国家公园），当时使用冲压式气动降落伞和freefall跟踪技术。基地跳伞显然比从飞机上跳伞更加危险，目前许多人认为，基地跳伞只是作为一种极限运动或特技。
从以上四类跳伞环境中至少成功跳伞一次的人将获得相应的数字证书，1981年1月18日当菲尔史密斯和菲尔梅菲尔德跳一起从休斯敦的摩天大楼跳下，他们成为第一个从摩天大楼，天线高塔，大桥水坝，悬崖溶洞均成功跳下并且获得基地跳伞编号的人（基地＃ 1和2号），在Jean和Carl boenish分别获得3和4号证书款后不久。一个单独的“奖”颁发给完成夜间跳伞的人们，梅菲尔德在夜间完成四类跳伞，成为夜间基地跳伞第一号＃ 1 ，数星期后史密斯也获得该证书。
在八十年代初，几乎所有的基地跳伞都使用标准的skydiving跳伞装备，其中包括两个降落伞（主要和后备） ，和部署组件。稍后，人们开发设计了基地跳伞专用的跳伞设备。
英文解释
BASE jumping is a sport involving the use of a parachute or the sequenced use of a wingsuit and parachute to jump from fixed objects--with the parachute unopened at the jump (else see paragliding). "BASE" is an apronym that stands for the four categories of fixed objects from which one can jump:
Building
Antenna
Span
Earth
The acronym "BASE" was coined by film-maker Carl Boenish, his wife Jean Boenish, Phil Smith, and Phil Mayfield. Carl was the real catalyst behind modern BASE jumping, and in 1978 filmed the first BASE jumps (from El Capitan, in Yosemite National Park) to be made using ram-air parachutes and the freefall tracking technique. While BASE jumps had been made prior to that time, the El Capitan activity was the effective birth of what is now called BASE jumping. BASE jumping is significantly more dangerous than similar sports such as skydiving from aircraft, and is currently regarded by many as a fringe extreme sport or stunt.
BASE numbers are awarded to those who have made at least one jump from each of the four categories. When Phil Smith and Phil Mayfield jumped together from a Houston skyscraper on January 18th, 1981, they became the first to attain the exclusive BASE numbers (BASE #1 and #2, respectively), having already jumped from antennae, spans, and earthen objects. Jean and Carl Boenish qualified for BASE numbers 3 and 4 soon after. A separate "award" was soon enacted for Night BASE jumping when Mayfield completed each category at night, becoming Night BASE #1, with Smith qualifying a few weeks later.
During the early eighties, nearly all BASE jumps were made using standard skydiving equipment, including two parachutes (main and reserve), and deployment components. Later on, specialized equipment and techniques were developed that were designed specifically for the unique needs of BASE jumping.