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105/10/04 14:00 中央大學太空及遙測研究中心曾國欣助理教授 演講
演講公告
張貼人：網站管理員 ╱ 公告日期：2016-09-30演 講 公 告
主講人：曾國欣 助理教授
地點：中央大學科學一館S-325教室
摘要：
講題：Monitoring Mass Change in the Central Tibetan Plateau Using Combined Satellite Altimetry, Remote Sensing and Gravimetry
主講人：曾國欣 助理教授
中央大學太空及遙測研究中心
時間：10月04日（星期二）下午2點
地點：中央大學科學一館S-325教室
摘要：
Mass balance in the Tibetan Plateau (TP) has been changing rapidly, driven not only by geological and geodynamical forces, but also by contemporary climate-warming episode that alters weather pattern and transits glacier/permafrost into flowing waters. However, the interpretation of gravity anomaly sensed by GRACE mission is sometimes difficult due to its coarse resolution in spatial domain. For example, the increase of mass in the central TP is arguably contributed more by atmospheric circulation such as intensified precipitation (rainfall/snow), especially over the last two decades, than melting glaciers. In this study, we utilize various satellite active/passive remote sensing technologies, including satellite radar/laser altimetry (Envisat, Jason-2, ICESat), optical remote sensing (Landsat series), passive microwave radiometer (TRMM), and gravimetry (GRACE), to conduct a comprehensive analysis of mass components and their roles in gravity anomaly. Our study site will focus on the Tanggula Mountains with an altitude >4000 m and full of alpine glaciers. In our preliminary result, the current mass increase in the central TP, near a twin lake named Chibuzhang–Dorsoidong Co in particular, is mostly contributed by an expansion of lake volume, in part great than 50%. The information of contribution from each component is necessary to avoid inaccurate assessment of climate change consequences.
最後修改時間：2016-10-05 AM 11:49
