ArticleScientific reports2025
Seismic characterization of inland and coastal sabkhas using V
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Near-surface geophysics: from measurements to reliable models.Scientific reports · 2026Article
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7 authors.
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Abstract
Sabkhas represent abundant topographic environments along the Arabian Gulf and are increasingly relevant to hydrocarbon exploration and urban development. Their complex geological and hydrogeological settings significantly control near-surface seismic properties, influencing seismic velocity contrasts, attenuation ([Formula: see text]), and anisotropy. This study presents the first integrated application of P-wave velocity ([Formula: see text]), S-wave velocity ([Formula: see text]), [Formula: see text] ratio, seismic anisotropy, and [Formula: see text] attenuation analysis in sabkha environments, applied to the mature coastal sabkha of Abu Dhabi (CSAD) and the immature inland sabkha of Jayb Uwayyid (SJUW). Seismic refraction and multichannel analysis of surface waves (MASW) were used to obtain [Formula: see text] and [Formula: see text], compute the [Formula: see text] ratio, and estimate seismic anisotropy and attenuation. Three distinctive zones were delineated in both sabkhas using the produced tomograms. The shallowest dry zone with [Formula: see text]<428 m/s, [Formula: see text] <261 m/s and ratios of 1-2 with a thickness of 1-5 m, respectively, a transition partially saturated zone with [Formula: see text]<1900 m/s, [Formula: see text] <760 m/s and ratios of 1.5-2.5 extend up to 8 m in CSAD and 6 m in SJUW, a fully saturated zone, extending below the partially saturated zone, is defined by higher velocities ([Formula: see text]>1900 m/s, [Formula: see text]>760 m/s) and ratios increasing toward ~2–4.5 with depth. [Formula: see text] values reach up to 0.05 in both sabkhas, aligning with the hydrological zones, indicating fluid-related attenuation driven by seawater-brine interactions at CSAD and artesian upwelling at SJUW from continental brines. The uppermost parts of CSAD elevated velocities reflect a lithified hardground layer, while its elevated anisotropy marks its complex sedimentary and hydrological evolution. These results highlight the complexity of mature CSAD associated with elevated stratigraphy and hydrological conditions that affect the seismic signal.
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