• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of geodynamics >Vertical motion at TEHN (Iran) from Caspian Sea and other environmental loads
【24h】

Vertical motion at TEHN (Iran) from Caspian Sea and other environmental loads

机译：来自里海的TEHN（伊朗）的垂直运动和其他环境载荷

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We compare Global Positioning System (GPS) height time series at GPS station TEHN in Tehran, Iran, with predicted load deformation from various sources, including the Caspian Sea, the atmosphere, terrestrial water storage (TWS), the oceans, and glacial isostatic adjustment (GIA). The study covers the period October 2004 to December 2015, and uses data from the Gravity Recovery and Climate Experiment (GRACE), satellite altimetry, and data-assimilating climate models. Predicted load deformation agrees well with an average of 4 GPS height time series (JPL, SOPAC, MEaSUREs and NGL) at both seasonal and longer timer time scales. At seasonal time scales, changes in atmospheric pressure and TWS are dominant, while groundwater depletion and Caspian Sea level change account for about 85% of the similar to 1 mm/yr average uplift rate. TWS loading derived from GRACE mascon solutions leads to better agreement with GPS results (in combination with other components) than that from GRACE spherical harmonics solutions, benefited from improved accuracy and spatial resolution of GRACE mascons. The four GPS height time series show good consistency at long-term time scales, but significantly large discrepancy at seasonal time scales for undocumented reasons. We discuss possible error sources for GPS observations and loading computation.
机译：我们将伊朗德黑兰GPS站TEHN的全球定位系统（GPS）高度时间序列与来自里海，大气层，陆地储水（TWS），海洋和冰川等静压调整的各种来源的预计载荷变形进行了比较（GIA）。这项研究涵盖了2004年10月至2015年12月，并使用了重力恢复和气候实验（GRACE），卫星测高仪和数据同化气候模型的数据。预测的载荷变形在季节和更长的计时器时间尺度上均与4个GPS高度时间序列（JPL，SOPAC，MEaSURE和NGL）的平均值非常吻合。在季节性尺度上，大气压力和TWS的变化占主导地位，而地下水耗竭和里海水位变化约占15％/年平均上升速率的85％。与GRACE球形谐波解决方案相比，从GRACE mascon解决方案得出的TWS载荷与GPS结果（与其他组件组合）的一致性更好，这得益于GRACE mascon的改进的精度和空间分辨率。四个GPS高度时间序列在长期时标上显示出良好的一致性，但由于未记录的原因，在季节性时标上存在显着差异。我们讨论了GPS观测和载荷计算的可能误差源。

著录项

  • 来源
    《Journal of geodynamics》 |2018年第12期|17-24|共8页
  • 作者

    Wang Song-Yun; Chen J. L.; Wilson C. R.; Li Jin; Hu Xiao-Gong;

  • 作者单位

    Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China;

    Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China;

    Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA;

    Univ Texas Austin, Ctr Space Res, Austin, TX 78712 USA;

    Shanghai Key Lab Space Nav & Positioning Tech, Shanghai, Peoples R China;

    Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Hubei, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Caspian Sea; TEHN; Loading deformation; GPS; GRACE;

    机译：里海;TEHN;变形;GPS;GRACE;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号