Podrobnosti záznamu

    Gravity and geodetic control of geodynamic activity near Aswan Lake, Egypt
    Issawy, E. S. A.
    Mahmoud, S. M.
    Mrlina, Jan
    Radwan, A. H.
    Rayan, A.
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    EGRSE. Exploration Geophysics, Remote Sensing and Environment
    Roč. 16, č. 1-2
    s. 1-8
    Projekt: IAA300120905, GA AV ČR3cav_un_auth*0252830
    Rozsah: 8 s. : CD ROM
    Výzkumný záměr: CEZ:AV0Z30120515
Předmětová kategorie
    gravity monitoring
    groundwater change
    Lake Aswan
    surface movements
Klíčové slovo
Abstrakt (anglicky)
   Geodynamic investigations in the Aswan Lake region were started after the M=5.5 earthquake in 1981, triggered by the lake water fluctuations. Besides establishing the seismological networks, also the geodetic observations focused on the Kalabsha and Sayal fault zones were started. It was found the the Kalabsha fault is an active dextral strike-slip with normal component indicating uplift on its southern side. However, the annual velocity rates in both components do not exceed 2 mm/y, and do not therefore represent extremely active faulting. We also launched gravity monitoring in 1997, and performed another two campaigns in 2000 and 2002. The observed non-tidal temporal gravity changes indicate rather the flood water infiltration into the porous Nubian sandstone, than tectonic stress effect. The station nearest to the lake exhibited about 60 mGal positive gravity change within the 1997-2002 period.
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
Datum importu
    9. 12. 2013