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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Implications of post-disturbance studies on the grain size of thesediments from the Central Indian Basin
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Implications of post-disturbance studies on the grain size of thesediments from the Central Indian Basin

机译：后扰动研究对中环盆地晶粒大小的影响

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Indian Deep-Sea Environment Experiment (INDEX) was conducted by simulating benthic disturbance and resuspension of the sediments in 3 km x 200 m narrow strip at 5300 m water depth in the Central Indian Basin (CIB). Using the conventional coring methods, pre- and post-disturbance data have been compared to predict the probable direction of the plume movement on the seabed. Studies on 84 subsections of 10 box cores show that the disturbance at places was effective up to 25 cm depth. Post-disturbed samples collected from the pre-disturbed locations show an increase of 10 to 27% silt and clay, and indicate that they were the major component of the plume. It has been shown that for such studies the silt and clay can be used as effective indicators of the plume movement. The studies revealed that the plume has migrated at least up to 2 km in the southwest direction and 1 km south of the disturbed zone (DZ). Increase in the surface clay content is ascribed to mixing of the sediments from deeper sections due to the benthic disturbance.
机译：通过在3 km x 200米狭窄的条带中在中央印度盆地（CIB）的水深在5300米水深在3 km x 200米的狭窄条带上模拟沉积物和重悬浮进行印度深海环境实验（指数）。使用传统的芯片方法，已经进行了预先和干扰后的数据，以预测海底上羽流运动的可能方向。关于10个盒核心第84款的研究表明，距离的干扰有效高达25厘米的深度。从预后位置收集的后检测样本显示出10至27％的淤泥和粘土，表明它们是羽流的主要成分。已经表明，对于这种研究，淤泥和粘土可以用作羽流运动的有效指标。研究表明，羽流已经在西南方向上迁移到了至少2公里，并在扰动区以南1公里处（DZ）。由于底栖扰动，表面粘土含量的增加归因于从更深的部分混合沉积物。

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