Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

Rainfall‐induced ground deformation in southern Africa

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
اقرأ أكثر حفظ في قائمتي
  • معلومة اضافية
    • Contributors:
      Géosciences Rennes (GR); Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR); Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS); German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ); Conseil National de la Recherche Scientifique; Université de Rennes
    • بيانات النشر:
      HAL CCSD
      Wiley-Blackwell
    • الموضوع:
      2023
    • Collection:
      Archive Ouverte de l'Université Rennes (HAL)
    • نبذة مختصرة :
      International audience ; We present an analysis of ground deformation induced by large-scale seasonal rainfall in Southern Africa, based on GPS and GRACE time series and on simulations of elastic flexural response to hydrological loading. This large-scale study including South Zambia, South Angola, North Namibia and North Botswana displays a latitudinal precipitation gradient between tropical to semi-arid conditions. GRACE data display annual variations in water mass decreasing drastically southwards. GPS time series of three permanent stations located in Zambia, Namibia and Botswana show seasonal synchronous vertical displacements with amplitude decreasing southwards from 4 to 2 cm, with a shift of 2–3 months from the main rainfall season. Flexure simulations integrating rainfall, evapotranspiration, water storage, flood migration and river output produce a ground flexure up to 6 cm with timing in agreement with the GPS time series. It highlights the hydrological buffering of surface aquifer located in the Kalahari sands.
    • Relation:
      insu-04071859; https://insu.hal.science/insu-04071859; https://insu.hal.science/insu-04071859/document; https://insu.hal.science/insu-04071859/file/Terra%20Nova%20-%202023%20-%20Dauteuil%20-%20Rainfall%E2%80%90induced%20ground%20deformation%20in%20southern%20Africa.pdf
    • الرقم المعرف:
      10.1111/ter.12650
    • Rights:
      http://creativecommons.org/licenses/by-nc-nd/ ; info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.B6B1ACDD