Studies on data acquisition methods for ice sheets, glaciers and sea ice by micro wave sensors installed on satellites

(一)会议--三次冰盖、冰川、海冰卫星观测会议。课题包括：“利用RADARSAT合成孔径雷达观测海冰和冰盖项目”、“被动微波传感器冰川观测”、“海冰观测问题”、“澳大利亚自动气象站”、“合成孔径雷达干涉法图像分析”、“鄂霍次克海冰地面实况计划”等。(2)1996年和1997年J-ERS1和RADARSAT到来时，在鄂霍次克海进行了鄂霍次克海海冰地面实况计划观测、飞机红外图像观测和萨拉马湖、鄂霍次克海周围气象观测。海冰表面的红外温度取决于冰层的厚度。(3)在南极西奥瓦站的南极冰盖观测中，通过一台多功能天线获取了几种卫星数据。合成孔径雷达图像显示，冰盖沿岸地区后向散射信号大，内陆地区后向散射信号小。为了阐明这一特征，使用数据记录器的气象站被设置在从Syowa站到Dome Fuji站的路线上。与威斯康星大学合作，还在富士穹顶和中继点建立了两个使用Argos系统的气象站。

(1) MeetingsMeetings for satellite observation of ice sheet, glacier and sea ice were held three times. The subjects were "Project of sea ice and ice sheet observation using RADARSAT SAR", "Glaciological observation by passive micro wave sensors", "Problems on sea ice observation", "Automatic weather stations in Autarctica", "Image analysis by SAR interferometory method", "Ground truth program on Okhotsk sea ice", and so on.(2) Observation in Okhotsk SeaAs a observation in Ground truth program on Okhotsk sea ice, infrared image observation from an airplane and meteorological observation were done around Saroma Lake and Okhotsk Sea when J-ERS1 and RADARSAT came in 1996 and 1997. The infrared temperature of sea ice surface depended on ice thickness.(3) Observation in Antarctic ice sheetAt Syowa Station in Antarctica, several kinds of satellite data were acquired by a multipurpose antenna. SAR images shows the back-scatter signal was large in coastal regions on the ice sheet and small in inland region. To clarify this feature, weather stations using data loggers were set up along a route from Syowa Station to Dome Fuji Station. Two weather stations using ARGOS System are also set up at Dome Fuji and Relay Point in corporation with Wisconsin University.