Source zone modelling for the Harrat Al-Birk, Red Sea coast: insight from crustal rheological parameters and gravity anomaly interpretation
The source model for evolution of the Harrat Al-Birk (HAB) is presented by constructing a 2D integrated crustal model using gravity anomalies and the rheological parameters computed from receiver function analysis (REF) results. The Bouguer anomalies are of average amplitude 20 mGal over the HAB which quickly change into an Axial Gravity Low (AGL) further inland on the Arabian Shield Crust (ASC) showing a consistent fall by ~ 110 mGal. Within this region, an anomalous gravity high, called the Jabal As-Swdah Gravity High (JSGH), of 60 mGal amplitude and 55 km wavelength, occupies the higher grounds where the peak elevation reaches 2,800 m. An analysis of the computed rheological parameters, namely, Vp, Vp/Vs ratio, density, Lame’s first and second constants, bulk modulus, Young’s modulus, Poisson’s ratio, and acoustic impedance, suggests that the lower crust is grossly uniform, whereas the …
The source model for evolution of the Harrat Al-Birk (HAB) is presented by constructing a 2D integrated crustal model using gravity anomalies and the rheological parameters computed from receiver…
A high-resolution gravimetric geoid model for the Kingdom of Saudi Arabia area was determined. A data set of 459,848 land gravity, 80,632 shipborne marine gravity data, DTU17 altimetry gravity…
The Eastern flank of the Red sea represents an uplifted Precambrian basement that is known as the Arabian Shield.