Preliminary proposal of scientific data verification in CSES mission     

Lan-wei  Xu-hui Shen  Yu Zhang  Rui Yan 《地震科学（英文版）》2015,28(4):303-310

China Seismo-Electromagnetic Satellite(CSES)will be launched at the end of 2016 and the orbit is sunsynchronous and the altitude is about 500 km.The design of CSES satellite and ground segment are introduced in this paper first.And then the preliminary proposals of scientific data verification and cross-verification in CSES mission are given,which can be used to classify the payloads' operation state,and validate the reliability of data.  相似文献   

A comparison of summer precipitation structures over the South China Sea and the East China Sea based on tropical rainfall measurementmission     

LI Jiangnan  YANG Chaofeng  LI Fangzhou  HE Qihu  LI Weibiao 《海洋学报(英文版)》2013,32(11):41-49

The three-dimensional structures of summer precipitation over the South China Sea （SCS） and the East China Sea （ECS） are investigated based on tropical rainfall measurement mission （TRMM）. The primary results are as follows. First, both the convective and stratiform precipitation rates in the SCS are much higher than those of the ECS. The contribution of the convective cloud precipitation to the surface precipitation is primarily over the SCS and the ECS with a proportion of about 70%, but the contribution of convective cloud precipitation is slightly larger in the SCS than the ECS. The contribution of stratus precipitation is slightly larger in the ECS than that in the SCS. Second, the content of cloud particles and precipitation particles in the ECS in June was greater than that in the SCS, while in July and August, the content of cloud and precipitation particles in the ECS was less than that in the SCS. Third, the latent heat profile of the ECS is quite different from that of the SCS. In June, the peak values of evaporation and condensation latent heating rates in the ECS are greater than those in the SCS. In July and August, however, the peak values of evaporation and condensation latent heating rates in the ECS are about 0.05°/h less than those in the SCS.  相似文献   

Laser Ablation (193 nm), Purification and Determination of Very Low Concentrations of Solar Wind Nitrogen Implanted in Targets from the GENESIS Spacecraft     

Laurent Zimmermann  Pete Burnard  Bernard Marty  Fabien Gaboriaud 《Geostandards and Geoanalytical Research》2009,33(2):183-194

The GENESIS space mission recovered ions emitted by the Sun during a 27 month period. In order to extract, purify and determine the very low quantities of solar nitrogen implanted in the GENESIS targets, a new installation was developed and constructed at the CRPG (Nancy, France). It permitted the simultaneous determination of nitrogen and noble gases extracted from the target by laser ablation. The extraction procedure used a 193 nm excimer laser that allowed for surface contamination in the outer 5 nm to be removed, followed by a step that removed 50 nm of the target material, extracting the solar nitrogen and noble gases implanted in the target. Following purification using Ti and Zr getters for noble gases and a Cu-CuO oxidation cycle for N₂, the extracted gases were analysed by static mode (pumps closed) mass spectrometry using electron multiplier and Faraday cup detectors. The nitrogen blanks from the purification section and the static line (30 minutes) were only 0.46 picomole and 0.47 picomole, respectively.  相似文献   

月球地形测绘和月球大地测量(2)   总被引：3，自引：0，他引：3  

陈俊勇 《测绘科学》2004,29(3):6-9

本文主要概要介绍前苏联在探月航天器方面,探测号(Zond)和月亮号(Luna)的主要历程和在月球上的地形测绘及大地测量等地学方面的成绩。  相似文献   

矿业跨越式发展中的几个问题     

徐公愉 《吉林地质》2001,20(4):14-17

进入21世纪，在矿业跨越式发展中，地学发展与地矿工作本身、地勘工作与环保工作、21世纪地矿人才的培养以及在建设循环型经济社会中促进资源有效利用等方面都为地学哲学工作者提出了新的课题.而以自律强化他律则是解决众多问题的关键。  相似文献   

Simulation of a Himalayan cloudburst event   总被引：5，自引：0，他引：5  

Someshwar Das  Raghavendra Ashrit  M. W. Moncrieff 《Journal of Earth System Science》2006,115(3):299-313

Intense rainfall often leads to floods and landslides in the Himalayan region even with rainfall amounts that are considered comparatively moderate over the plains; for example, ‘cloudbursts’, which are devastating convective phenomena producing sudden high-intensity rainfall (∼10 cm per hour) over a small area. Early prediction and warning of such severe local weather systems is crucial to mitigate societal impact arising from the accompanying flash floods. We examine a cloudburst event in the Himalayan region at Shillagarh village in the early hours of 16 July 2003. The storm lasted for less than half an hour, followed by flash floods that affected hundreds of people. We examine the fidelity of MM5 configured with multiple-nested domains (81, 27, 9 and 3 km grid-resolution) for predicting a cloudburst event with attention to horizontal resolution and the cloud microphysics parameterization. The MM5 model predicts the rainfall amount 24 hours in advance. However, the location of the cloudburst is displaced by tens of kilometers  相似文献   

航天任务实时3维可视化仿真     

蓝朝桢  陈景伟  李建胜  徐青 《测绘学院学报》2007,(1)

提出了基于对象层次结构的3维几何模型和运动模型建模方法,解决了复杂航天器建模过程中的几何形状的表示问题,并且实现了航天器运动特性的表达与航天器内部部件的运动建模;对实现航天任务3维可视化仿真所涉及到的软件框架、技术方法等作了详细的论述。最后,给出了应用该技术建立的软件在实际应用中的几组试验结果。这些结果表明这项技术能为航天任务的顺利完成提供较好的可视化保障,可以广泛应用于各种航天任务。  相似文献   

TerraSAR-X/TanDEM-X雷达遥感计划及其应用   总被引：4，自引：0，他引：4  

廖明生  田馨  赵卿 《测绘信息与工程》2007,32(2):44-46

介绍了德国航天局即将发射的TerraSAR-X雷达卫星遥感计划和将要在近期实施的TanDEM-X雷达遥感计划,分析了该计划的工作模式和应用。  相似文献   

CoRoT pictures transiting exoplanets     

《Comptes Rendus Geoscience》2015,347(3):153-158

The detection and characterization of exoplanets have made huge progresses since the first discoveries in the late 1990s. In particular, the independent measurement of the mass and radius of planets, by combining the transit and radial-velocity techniques, allowed exploring their density and hence, their internal structure. With CoRoT (2007–2012), the pioneering CNES space-based mission in this investigation, about thirty new planets were characterized. CoRoT has enhanced the diversity of giant exoplanets and discovered the first telluric exoplanet. Following CoRoT, the NASA Kepler mission has extended our knowledge to small size planets, multiple systems and planets orbiting binaries. Exploring these new worlds will continue with the NASA/TESS (2017) and ESA/PLATO (2024) missions.  相似文献   

水文基础设施建设形势与任务浅析          下载免费PDF全文

魏新平  蒋蓉  刘晋  李夏 《水文》2015,35(1):77-81

近年来,水文基础设施建设得到明显加强,水文站网布局和功能逐步完善,水文基础设施整体水平不断提高,水文测报和信息服务能力显著增强。经济社会发展和水利工作对水文不断提出了新的更高的要求,需要进一步加强水文基础设施建设。总结了"十一五"以来全国水文基础设施建设取得的成就,结合经济社会发展和水利工作对水文的要求,阐述了水文基础设施建设面临的形势和问题,分析了水文基础设施建设的目标和任务。  相似文献