地球资源观测卫星升空,开启地球观测新篇章

标签:
杂谈 |
分类: 科学与技术 |
2013.02.12
阿特拉斯五号火箭将地球资源观测卫星系列中的一颗最新卫星送入地球轨道,卫星将监测地球表面的变化。
华盛顿——地球资源观测卫星8号(Landsat 8)2月11日由加利福尼亚州范登堡空军基地(Vandenberg Air Force Base)升空,开始了持续采集地表状况数据的使命。此次发射使命将更灵敏的仪器送入轨道,为地球观测开启了最新篇章。
太平洋标准时间上午10点零2分,阿特拉斯五号(Atlas V)火箭从加利福尼亚发射平台升入万里晴空。用飞行评论员的话说,地球资源观测卫星8号将“延续从太空保护地球自然资源的40年业绩”。几分钟后,卫星与火箭分离,速度很快达到每秒6公里以上。卫星在太平洋海拔近300公里上空遨游不到半小时,接近了南极洲(Antarctica)。
这是始于1972年的一项科学项目的第八颗卫星。
美国国家航空航天局(NASA)局长查尔斯•博尔登(Charles Bolden)在从地面上观看这一发射时说:“地球资源观测卫星是国家航空航天局地球科学项目的核心部分。这些数据是监测气候变化的重要工具,并给人类健康和生物多样性、能源和水管理、城市规划、灾后重建和农业监测带来了改善。”
实用陆地成像仪(Operational Land Imager)和热红外传感器(Thermal Infrared Sensor)是地球资源卫星最新装备的两种仪器。它们比装配在早期地球资源观测卫星上的仪器更先进,对陆地及其随时间产生的变化将有更敏感的观察。
美国地质调查局(U.S.Geological Survey)负责收集和管理地球资源观测卫星传回的数据,并将材料归档,同时在因特网上与公众分享。
Read more: http://iipdigital.usembassy.gov/st/chinese/article/2013/02/20130212142483.html#ixzz2NJEgY3Na
Landsat Liftoff Opens New Chapter in Earth Observation
11 February 2013
An Atlas V rocket carries the newest satellite in the Landsat series into Earth orbit, where it will monitor the changing face of the planet.
Washington — Landsat 8 lifted off from Vandenberg Air Force Base in California February 11, beginning a mission to constantly collect data about surface conditions on Earth. The mission puts more sensitive instruments in orbit, opening the latest chapter in Earth observation.
Landsat 8 will be "continuing the 40-year legacy of preserving Earth's natural resources from space," said the flight commentator as an Atlas V rocket lifted off the launch pad into a clear California sky at 10:02 a.m. Pacific Standard Time. Within minutes of launch, the satellite separated from the rocket and quickly achieved a speed greater than 6 kilometers per second, soaring over the Pacific Ocean at an altitude of almost 300 kilometers. Within a half hour, the craft was nearing Antarctica.
The satellite is the eighth in a scientific program that began in 1972.
"Landsat is a centerpiece of NASA's Earth science program," said NASA Administrator Charles Bolden, watching the launch from the ground. "This data is a key tool for monitoring climate change and has led to the improvement of human and biodiversity health, energy and water management, urban planning, disaster recovery and agriculture monitoring."
The Operational Land Imager and the Thermal Infrared Sensor are two instruments onboard the newest entry in the Landsat series. These instruments are more advanced than those orbiting in earlier versions of Landsat and will allow more sensitive observations of the land and its changes over time.
The U.S. Geological Survey collects and manages the data returned by Landsat satellites, archiving the material and making it available to all over the Internet.