墨西哥湾南部格里哈尔瓦-乌苏马辛塔河水系悬浮沉积物浓度的测定

IF 1.827 Q2 Earth and Planetary Sciences

Arabian Journal of Geosciences Pub Date : 2025-07-19 DOI:10.1007/s12517-025-12292-4

Leonid Ignacio Márquez-García, David Alberto Salas-de-León, Gilberto Exposito-Díaz

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引用次数: 0

摘要

本研究利用2010年10月和2011年9月和11月在整个潮汐周期中采集的水样的声学多普勒电流剖面仪（ADCP）背散射、流速和悬浮固体浓度（SSC）记录，获得了墨西哥湾南部Grijalva-Usumacinta河水系（GURS）的悬浮泥沙浓度。利用后向散射值对SSC进行估计，得到了线性回归统计分析模型。结果表明，SSC的平均浓度为0.13 g L−1。潮汐状态支配着河口和南海附近的水流速度。Grijalva-Usumacinta河的平均流量为5136 m3 s−1，输沙量为214.1 \(\times\) 103 ～ 1467.2 \(\times\) 103 m3月−1。沉积物以淤泥和粘土为主，含陆源无机物。高动力河口沙洲是由悬浮泥沙输运形成的。

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Determination of suspended sediment concentration in the Grijalva-Usumacinta River System, Southern Gulf of Mexico

In this study, suspended sediment concentrations in the Grijalva-Usumacinta River System (GURS), southern Gulf of Mexico, were obtained using records of acoustic Doppler current profiler (ADCP) backscatter, current speed, and suspended solid concentrations (SSC) of water samples collected throughout a tidal cycle in October 2010 and September and November 2011. A model was obtained using linear regression statistical analysis to estimate the SSC using backscatter values. The results indicate that the estimated average concentrations of SSC were 0.13 g L⁻¹. The tidal regime governs the current velocities near the mouth of the river and the SSCs. The average flow of the Grijalva-Usumacinta River is 5136 m³ s⁻¹, transporting a sediment load of 214.1 \(\times\) 10³ to 1467.2 \(\times\) 10³ m³ month⁻¹. The sediment was predominantly silt and clay comprising terrigenous inorganic matter. A highly dynamic mouth bar is generated by suspended sediment transport.

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来源期刊

Arabian Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-

自引率

0.00%

发文量

1587

审稿时长

6.7 months

期刊介绍： The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone. Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.