首页> 外文期刊>Journal of geodynamics >Local hydrology, the Global Geodynamics Project and CHAMP/GRACE perspective: some case studies
【24h】

Local hydrology, the Global Geodynamics Project and CHAMP/GRACE perspective: some case studies

机译:局部水文学,全球地球动力学项目和CHAMP / GRACE观点:一些案例研究

获取原文
获取原文并翻译 | 示例
           

摘要

We first quantify the influence of aquifers on gravity variations by considering local, regional and continental scales. We show that locally only the direct attraction of the underlying aquifer has to be taken into account. At continental (or global scales), the underground water masses act by direct attraction (due to the earth curvature), loading flexure and potential redistribution. We show that at the intermediate regional scale (saying a few kilometres to a few hundreds of kilometres), groundwater contributions can be neglected in practice. Afterwards, we illustrate the difficulties in tackling the local hydrological context by studying comparatively the geological and hydrogeo-logical surroundings of three European Global Geodynamics Project (GGP) superconducting gravimeter stations (Strasbourg, Moxa, and Vienna). Finally, it appears clearly that hydrological variability and cycle characterisations constitute the up-to-date challenge while studying gravity variations in a large spectral range. That is why, gravity is used to quantify hydrological transfers, and overall when seeking for small signals from the Earth's deep interior or other environmental signals (atmosphere, oceans) where groundwater influence can be seen as a disturbance.
机译:我们首先通过考虑局部,区域和大陆尺度来量化含水层对重力变化的影响。我们表明,在本地仅需考虑下伏含水层的直接吸引。在大陆(或全球范围),地下水团通过直接吸引(由于地球曲率),载荷挠曲和潜在的重新分布而起作用。我们表明,在中等区域规模(比如说几公里到几百公里),在实践中可以忽略地下水的贡献。之后,我们通过比较研究三个欧洲全球地球动力学项目(GGP)超导重力仪站(斯特拉斯堡,莫扎和维也纳)的地质和水文地质环境,说明了应对当地水文情况的困难。最后,很明显,在研究大光谱范围内的重力变化时,水文变异性和循环特征构成了最新的挑战。这就是为什么在地球深处的内部或其他环境信号(大气,海洋)中寻找小信号时,重力被用于量化水文传递,而总的来说,重力被用于量化水文传递,在这些环境信号中,地下水的影响可视为干扰。

著录项

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