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中国南极考察获三项重大科学发现
2016-01-19 10:57:08 中国新闻网

考察队员在机舱内处理探测数据吴琼摄
“这次由中国科学家领衔的航空科学调查行动,取得的阶段性现场考察成果令人非常振奋。”孙波说,这三项重大发现对深刻理解冰盖稳定性及其对全球海平面的影响、揭示冰下地质构造和热状态及演化、寻找南大洋超冷水和底层水生成源区等都具有非常重要的意义。
中国第32次南极科考队领队秦为稼认为,我国南极考察队取得重大进展和发现,在国际上跃升为该领域的领跑者,这是厚植于我国南极考察30多年的经验积累,后勤保障能力的提升和国家加大南极考察投入的综合结果。“举例来说,南极中山站是距离伊丽莎白公主地最近的常年考察站,这为开展科学调查活动提供了保障条件。国家投入配置的‘雪鹰601’固定翼飞机及其机载科学调查设备,表现出优越的技术性能和南极适用性。机载冰雷达穿透冰层能力超过5000米,冰层深部分辨力达到15米,空间定位精度达到25厘米,技术上达到国际上最先进水平,科考平台和考察技术手段的先进性为考察队取得研究突破奠定了坚实基础。”
南极洲东南极冰盖中部地区,由于地域偏远,迄今是人类对南极冰盖认识最少的区域之一。因地理位置十分独特,在南极变化与全球影响的研究中,该区域具有重要地位。孙波表示,一系列强有力的研究证据已经表明,南极冰盖与全球变化具有密切联系,冰盖底部湖泊和水系对冰盖稳定性产生至关重要的影响。
自2015年以来,科学家通过卫星遥感资料分析和冰盖模型研究东南极伊丽莎白公主地冰盖表面地貌特征,推测该地区冰盖底部应该隐藏有世界最大的峡谷和冰下湖泊。由于事关冰盖稳定性与全球海平面变化等重大科学前沿命题,迅速引起极大关注。目前,孙波领导的团队正在南极现场开展后续的航空科学调查工作,4月中旬回国后将在深入分析研究的基础上形成科研成果。(特派记者 吴琼)
责任编辑:柯旺 CN044
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