中国沿海验潮站及其邻近地区陆地垂直运动分析

利用中国沿岸验潮站GNSS和邻近地区陆态网络GNSS基准站观测数据,结合卫星高度计和验潮站海平面观测数据分析了中国沿海验潮站及其邻近地区陆地垂直运动特征。中国沿海海平面观测以及验潮站和陆态网GNSS基准站观测结果显示,中国沿海省区市及沿海验潮站陆地垂直运动总体表现为：辽宁至江苏沿海上升、上海至福建泉州沿海沉降、福建厦门至广西沿海升降交替的格局,局部滨海平原地区如华北平原天津南部、河北平原的沧县则表现出显著的沉降特征。验潮站陆地的抬升与沉降是沿海相对海平面变化的重要组成部分,准确掌握验潮站及其邻近区域的陆地垂直运动特征,可为沿海相对海平面变化分析、海平面变化影响评估以及未来海平面上升预测提供依据。     

粤东北仁居-差干地区晚白垩世火山岩年代学及地球化学特征

粤东北仁居—差干地区发育有大规模的晚白垩世中酸性火山岩,其岩浆源区、岩石成因和构造环境以及年代学迄今尚未得到很好的约束,在研究区开展深入的研究有助于揭示仁居—差干地区晚白垩世岩浆作用过程和演化特征.文章总结了该地区火山岩岩石地球化学特征.同时分析了该区火山岩的LA-ICP-MS锆石U-Pb年代学特征.火山岩具有高硅高碱...     

DIFFERENT EVOLUTIONS OF THE PHILIPPINE SEA ANTICYCLONE FOR THE IMPACT OF EL NI?O IN PEAK PHASES WITH AND WITHOUT A POSITIVE INDIAN OCEAN DIPOLE

The different impacts of El Ni?o during peak phases with and without a positive Indian Ocean Dipole (P-IOD) on the Northwest Pacific circulation were studied. The authors focused on the Northwest Pacific circulation features in the mature phase of El Ni?o from September to February of the next year. Composite maps and simulations demonstrate that the atmospheric circulation under the impact of El Ni?o with and without P-IOD exhibits large differences in temporal evolution and intensity. In single El Ni?o (SE) years without a P-IOD, an anomalous low-level anticyclonic circulation around the Philippines (PSAC) is instigated by the single El Ni?o-induced Indonesian subsidence. However, during the years when El Ni?o and a P-IOD matured simultaneously, a much greater anomalous subsidence over the western Pacific and the Maritime Continent occurred. The PSAC tends to occur earlier, is much stronger and has a longer lifetime than that during SE. More importantly, the PSAC shows a characteristic of an eastward movement from the southern South China Sea (SCS) to the Philippine Sea. This characteristic does not appear during SE. These patterns imply that a positive IOD event tends to exert a prominent influence on the PSAC during El Ni?o events and there is a combined impact of El Ni?o and P-IOD on the development of the PSAC.     

中国卫星遥感地表水资源监测能力分析与展望

在中国自然资源部水资源调查与确权登记的职能需求之下，面向中国“十四五”及二零三五年远景卫星发展规划，亟需厘清水资源属性卫星遥感监测国内外发展现状，并进一步剖析中国卫星地表水资源监测能力。本文在对国内外多种类型卫星（包括光学、激光、雷达、重力、GNSS-R等）水资源监测能力及属性反演前沿技术（以地表固液态水的范围、水位、体积变化等为主）进行总结分析的基础上，针对中国地表水资源卫星遥感监测的现状和不足，从观测体系、技术体系、产品体系和服务体系4个方面提出未来卫星遥感地表水资源监测规划设计建议。