Hydro/Engineering Geophysical Parameters and Design Response Spectrum for Sustainable Development in Ras Muhammed National Park, Sinai

• Published in: Pure and applied geophysics Vol. 173; no. 6; pp. 2101 - 2118
• Main Authors: Khalil, Mohamed H., Gamal, Mohamed A.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.06.2016; Springer Nature B.V
• Subjects: Acceleration; Aquifers; Boreholes; Buildings; Design; Design analysis; Design engineering; Earth and Environmental Science; Earth Sciences; Electrical resistivity; Freshwater resources; Geophysics; Geophysics/Geodesy; Groundwater flow; Hydrologic sciences; National parks; Pumping tests; Risk reduction; Seismic zones; Seismology; Shear; Specific capacity; Sustainable development; Water resources; Egypt; ISW, Red Sea, Aqaba Gulf; ISW, Egypt, Arab Rep., Sinai Peninsula; peak horizontal acceleration; Hydro/engineering; tortuosity; storativity; formation; resistivity factor; design response spectrum; resistivity
• ISSN: 0033-4553; 1420-9136
• DOI: 10.1007/s00024-015-1231-6

The Egyptian government is preparing a sustainable development master plan for the Ras Muhammed National Park (RMNP), south Sinai. Noteworthy, the scarcity of the freshwater resources and close proximity to the active seismic zones of the Gulf of Aqaba implicate geophysical investigations for the fresh groundwater aquifers and construct a design response spectrum, respectively. Accordingly, 14 VESs, hydro/engineering geophysical analysis, pumping tests, downhole seismic test, a design response spectrum for buildings, and borehole data were carried out in the study area. The unconfined freshwater aquifer was effectively depicted with true resistivities, thickness, and EC ranged from 56 to 135 Ω m, 11 to 112 m, and 1.4 to 7.1 mS/m, respectively. The Northeastern part was characterized by higher aquifer potentiality, where coarser grains size, highest thickness (112 m), high true resistivity (135 Ω m), groundwater flow (0.074 m 3 /day), tortuosity (1.293–1.312), formation resistivity factor (4.1–4.6), and storativity (0.281–0.276). An increase in pumping rate was accompanied by an increase in well loss, increase in aquifer losses, decrease in well specific capacity, and decrease in well efficiency. Design response spectrum prognosticated the short buildings (<7 floors) in RMNP to be suffering from a high peak horizontal acceleration and shear forces for acceleration between 0.25 and 0.35 g. Therefore, appropriate detailing of shear reinforcement is indispensable to reduce the risk of structural damages at RMNP.